MOT Risk Index.co.uk

Seat Mii MOT pass rate and common problems

82.9% of Seat Miis passed the 2024 MOT (18,865 first tests): 77.7% at the first attempt and 5.2% after a fix at the test centre (PRS). About 1 in 5 failed the first attempt. For its age, it fails 14% less often than normal: MOT Risk Index 86.0 (95% CI 83.8–88.3; 100 = normal).

Seat Mii at a glance, 2024 MOT
MeasureValueUnitCompared withYearsTests
MOT pass rate82.9%incl. 5.2% fixed at the test centre202418865
Passed at the first attempt77.7%all first tests202418865
MOT Risk Index (95% CI 83.8–88.3)86.0index100 = normal for its age · rank 312 (tied) of 761 (1 = fails least for its age)202418865
Biggest excess: Noise, emissions and leaks2.3per 1001.8 same-age2019–202499179
Dangerous defects5.4per 10011.2 UK, not age-adjusted2019–202499179
Advisory items76.3per 100127.1 UK, not age-adjusted2019–202499179
strip · Seat Mii · MOT Risk Index · 86 vs 100 = normal · 2024
MOT Risk Index · Seat Mii. 0–240; 100 = normal for its age; median model 92.8 · rank 312 (tied) of 761 (1 = fails least for its age). It would rank between 298 and 337 anywhere within its 95% interval, other models held where they are. DVSA, 2024.
Seat Mii index position among 761 models
MeasureValueUnitCompared withYearsTests
Rank312of 761published models, 1 = fails least for its age202418865
Best rank within its 95% interval298rankother models held where they are202418865
Worst rank within its 95% interval337rankother models held where they are202418865

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Download this page's numbers (CSV) · How to cite

Data release dvsa-2024-v2 (24 Sep 2026) · full dataset (v5). This model's index changed from 92.3 to 86.0 in the 24 September 2026 release, after duplicate test records were removed.

What actually fails on a Seat Mii MOT, and how often?

Seat Mii MOTs fail most often on brakes: 7.1 per 100 tests, against 6.8 for UK cars of the same age (2019–2024, n = 99,179).

bar · Seat Mii · Brakes · 7.1 vs 6.8 · 2019–2024
DVSA MOT bulk data, 24 Sep 2026.
Seat Mii: the numbers behind this answer (2019–2024)
MeasureValueUnitCompared withYearsTests
Brakes7.1per 1006.82019–20247027
Visibility6.1per 1006.12019–20246060
Tyres5per 1008.12019–20244938
Lamps, reflectors and electrical equipment4.5per 1008.82019–20244455
Noise, emissions and leaks2.3per 1001.82019–20242290
Suspension2.1per 1007.92019–20242108

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 99,179 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV

Tyres, brakes and suspension: how does the Seat Mii compare with cars of the same age?

The biggest excess for the Seat Mii is brakes at age 8: 5.7 failures per 100 tests, against 5.4 for same-age cars of comparable models (2019–2024, n = 13,375).

bullet · Seat Mii · Tyres, age 3 · 2.9 vs 4.2 · 2019–2024
Tyres, age 3: 2.9 vs 4.2. Brakes, age 3: 0.6 vs 1.8. Suspension, age 3: 0.6 vs 0.6. Tyres, age 4: 2.8 vs 4.5. Brakes, age 4: 1.4 vs 2.4. Suspension, age 4: 0.3 vs 1.2. Tyres, age 5: 3.3 vs 5.1. Brakes, age 5: 2.0 vs 3.1. DVSA MOT bulk data, 24 Sep 2026.
Seat Mii: the numbers behind this answer (2019–2024)
MeasureValueUnitCompared withYearsTests
Tyres, age 32.9per 1004.22019–20248172
Brakes, age 30.6per 1001.82019–20248172
Suspension, age 30.6per 1000.62019–20248172
Tyres, age 42.8per 1004.52019–20249307
Brakes, age 41.4per 1002.42019–20249307
Suspension, age 40.3per 1001.22019–20249307
Tyres, age 53.3per 1005.12019–202412208
Brakes, age 52.0per 1003.12019–202412208
Full table
Further values · 2019–2024
MeasureValueUnitCompared withYearsTests
Suspension, age 50.5per 1002.22019–202412208
Tyres, age 63.6per 1005.52019–202414388
Brakes, age 63.8per 1003.82019–202414388
Suspension, age 60.9per 1003.72019–202414388
Tyres, age 73.6per 1006.02019–202414883
Brakes, age 74.7per 1004.52019–202414883
Suspension, age 71.4per 1005.72019–202414883
Tyres, age 83.5per 1006.32019–202413375
Brakes, age 85.7per 1005.42019–202413375
Suspension, age 82.1per 1007.82019–202413375

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 18,865 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV

Will my Seat Mii's advisory become a fail at the next MOT?

Seat Mii advisories turn into fails less often than on the median model; the one to watch is brakes: advisories on it became a fail at the next MOT 11.7% of the time.

funnel · Seat Mii · Brakes · 11.7 vs median model · 2019–2024
Advisories on brakes: 11.7 of 100 became a fail on the same item at the next MOT. DVSA MOT bulk data, 24 Sep 2026.
Seat Mii: the numbers behind this answer (2019–2024)
MeasureValueUnitCompared withYearsTests
Brakes11.7% next failmedian model2019–202410090
Suspension8.4% next failmedian model2019–20242573
Tyres6.4% next failmedian model2019–202417413
Identification of the vehicle3.5% next failmedian model2019–2024574
Non-component advisories0% next failmedian model2019–20244408

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 18,865 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV

My Seat Mii got an MOT advisory: what gets flagged most?

Seat Mii MOTs flag tyres most: 40.1 advisories per 100 tests, against 39.7 across UK tests (2019–2024, n = 99,179).

bar · Seat Mii · Tyres · 40.1 vs 39.7 · 2019–2024
DVSA MOT bulk data, 24 Sep 2026.
Seat Mii: the numbers behind this answer (2019–2024)
MeasureValueUnitCompared withYearsTests
Tyres40.1per 10039.72019–202439780
Brakes20.4per 10034.72019–202420231
Non-component advisories6.2per 1007.82019–20246168
Suspension5.9per 10026.22019–20245834
Identification of the vehicle0.9per 1002.52019–2024891
Body, chassis, structure0.8per 1004.62019–2024843

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 99,179 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV

What is likely to fail next on a Seat Mii?

For Seat Miis aged 3 to 5 whose last MOT was a pass, the item most likely to fail at the next MOT is visibility: 4.5% failed on it (2019–2024, n = 18,153).

bar · Seat Mii · Visibility, under 3 years old, after a pass · 4.2 vs baseline · 2019–2024
DVSA MOT bulk data, 24 Sep 2026.
Seat Mii: the numbers behind this answer (2019–2024)
MeasureValueUnitCompared withYearsTests
Visibility, under 3 years old, after a pass4.2% next fail2019–20244236
Tyres, under 3 years old, after a pass1.8% next fail2019–20244236
Lamps, reflectors and electrical equipment, under 3 years old, after a pass1.3% next fail2019–20244236
Brakes, under 3 years old, after a pass0.8% next fail2019–20244236
Body, chassis, structure, under 3 years old, after a pass0.3% next fail2019–20244236
Suspension, under 3 years old, after a pass0.3% next fail2019–20244236
Noise, emissions and leaks, under 3 years old, after a pass0.3% next fail2019–20244236
Seat belts and supplementary restraint systems, under 3 years old, after a pass0.1% next fail2019–20244236
Full table
Further values · 2019–2024
MeasureValueUnitCompared withYearsTests
Visibility, under 3 years old, after an advisory7.6% next fail2019–2024751
Tyres, under 3 years old, after an advisory2.9% next fail2019–2024751
Lamps, reflectors and electrical equipment, under 3 years old, after an advisory1.2% next fail2019–2024751
Brakes, under 3 years old, after an advisory0.8% next fail2019–2024751
Visibility, under 3 years old, after a fail6.4% next fail2019–2024516
Lamps, reflectors and electrical equipment, under 3 years old, after a fail4.8% next fail2019–2024516
Tyres, under 3 years old, after a fail3.7% next fail2019–2024516
Brakes, under 3 years old, after a fail2.7% next fail2019–2024516
Visibility, 3 to 5 years old, after a pass4.5% next fail2019–202418153
Tyres, 3 to 5 years old, after a pass2.5% next fail2019–202418153
Brakes, 3 to 5 years old, after a pass2.1% next fail2019–202418153
Lamps, reflectors and electrical equipment, 3 to 5 years old, after a pass2.0% next fail2019–202418153
Noise, emissions and leaks, 3 to 5 years old, after a pass1.0% next fail2019–202418153
Body, chassis, structure, 3 to 5 years old, after a pass0.9% next fail2019–202418153
Suspension, 3 to 5 years old, after a pass0.7% next fail2019–202418153
Seat belts and supplementary restraint systems, 3 to 5 years old, after a pass0.3% next fail2019–202418153
Steering, 3 to 5 years old, after a pass0.1% next fail2019–202418153
Road wheels, 3 to 5 years old, after a pass0.1% next fail2019–202418153
Identification of the vehicle, 3 to 5 years old, after a pass0.1% next fail2019–202418153
Visibility, 3 to 5 years old, after an advisory6.6% next fail2019–20246540
Tyres, 3 to 5 years old, after an advisory4.5% next fail2019–20246540
Brakes, 3 to 5 years old, after an advisory4.5% next fail2019–20246540
Lamps, reflectors and electrical equipment, 3 to 5 years old, after an advisory3.0% next fail2019–20246540
Body, chassis, structure, 3 to 5 years old, after an advisory1.3% next fail2019–20246540
Suspension, 3 to 5 years old, after an advisory1.2% next fail2019–20246540
Noise, emissions and leaks, 3 to 5 years old, after an advisory1.0% next fail2019–20246540
Seat belts and supplementary restraint systems, 3 to 5 years old, after an advisory0.5% next fail2019–20246540
Identification of the vehicle, 3 to 5 years old, after an advisory0.1% next fail2019–20246540
Road wheels, 3 to 5 years old, after an advisory0.1% next fail2019–20246540
Steering, 3 to 5 years old, after an advisory0.1% next fail2019–20246540
Visibility, 3 to 5 years old, after a fail6.6% next fail2019–20244893
Tyres, 3 to 5 years old, after a fail5.3% next fail2019–20244893
Brakes, 3 to 5 years old, after a fail5.2% next fail2019–20244893
Lamps, reflectors and electrical equipment, 3 to 5 years old, after a fail4.5% next fail2019–20244893
Body, chassis, structure, 3 to 5 years old, after a fail1.4% next fail2019–20244893
Suspension, 3 to 5 years old, after a fail1.4% next fail2019–20244893
Seat belts and supplementary restraint systems, 3 to 5 years old, after a fail1.3% next fail2019–20244893
Noise, emissions and leaks, 3 to 5 years old, after a fail1.1% next fail2019–20244893
Road wheels, 3 to 5 years old, after a fail0.2% next fail2019–20244893
Identification of the vehicle, 3 to 5 years old, after a fail0.2% next fail2019–20244893
Brakes, 6 to 8 years old, after a pass3.8% next fail2019–202417977
Visibility, 6 to 8 years old, after a pass3.7% next fail2019–202417977
Lamps, reflectors and electrical equipment, 6 to 8 years old, after a pass2.7% next fail2019–202417977
Tyres, 6 to 8 years old, after a pass2.5% next fail2019–202417977
Body, chassis, structure, 6 to 8 years old, after a pass1.8% next fail2019–202417977
Suspension, 6 to 8 years old, after a pass1.7% next fail2019–202417977
Seat belts and supplementary restraint systems, 6 to 8 years old, after a pass1.4% next fail2019–202417977
Noise, emissions and leaks, 6 to 8 years old, after a pass1.3% next fail2019–202417977
Road wheels, 6 to 8 years old, after a pass0.1% next fail2019–202417977
Steering, 6 to 8 years old, after a pass0.1% next fail2019–202417977
Identification of the vehicle, 6 to 8 years old, after a pass0.1% next fail2019–202417977
Brakes, 6 to 8 years old, after an advisory7.1% next fail2019–20249480
Visibility, 6 to 8 years old, after an advisory5.7% next fail2019–20249480
Tyres, 6 to 8 years old, after an advisory4.7% next fail2019–20249480
Lamps, reflectors and electrical equipment, 6 to 8 years old, after an advisory3.9% next fail2019–20249480
Suspension, 6 to 8 years old, after an advisory2.9% next fail2019–20249480
Body, chassis, structure, 6 to 8 years old, after an advisory2.6% next fail2019–20249480
Seat belts and supplementary restraint systems, 6 to 8 years old, after an advisory1.7% next fail2019–20249480
Noise, emissions and leaks, 6 to 8 years old, after an advisory1.6% next fail2019–20249480
Steering, 6 to 8 years old, after an advisory0.2% next fail2019–20249480
Road wheels, 6 to 8 years old, after an advisory0.2% next fail2019–20249480
Identification of the vehicle, 6 to 8 years old, after an advisory0.1% next fail2019–20249480
Brakes, 6 to 8 years old, after a fail9.1% next fail2019–20247152
Lamps, reflectors and electrical equipment, 6 to 8 years old, after a fail6.7% next fail2019–20247152
Visibility, 6 to 8 years old, after a fail6.4% next fail2019–20247152
Tyres, 6 to 8 years old, after a fail5.3% next fail2019–20247152
Seat belts and supplementary restraint systems, 6 to 8 years old, after a fail4.8% next fail2019–20247152
Suspension, 6 to 8 years old, after a fail3.5% next fail2019–20247152
Body, chassis, structure, 6 to 8 years old, after a fail3.0% next fail2019–20247152
Noise, emissions and leaks, 6 to 8 years old, after a fail2.1% next fail2019–20247152
Steering, 6 to 8 years old, after a fail0.3% next fail2019–20247152
Identification of the vehicle, 6 to 8 years old, after a fail0.3% next fail2019–20247152
Road wheels, 6 to 8 years old, after a fail0.1% next fail2019–20247152
Brakes, 9 to 11 years old, after a pass5.3% next fail2019–20244804
Lamps, reflectors and electrical equipment, 9 to 11 years old, after a pass4.0% next fail2019–20244804
Visibility, 9 to 11 years old, after a pass3.7% next fail2019–20244804
Suspension, 9 to 11 years old, after a pass3.1% next fail2019–20244804
Body, chassis, structure, 9 to 11 years old, after a pass2.7% next fail2019–20244804
Tyres, 9 to 11 years old, after a pass2.6% next fail2019–20244804
Seat belts and supplementary restraint systems, 9 to 11 years old, after a pass2.5% next fail2019–20244804
Noise, emissions and leaks, 9 to 11 years old, after a pass1.1% next fail2019–20244804
Steering, 9 to 11 years old, after a pass0.3% next fail2019–20244804
Identification of the vehicle, 9 to 11 years old, after a pass0.1% next fail2019–20244804
Brakes, 9 to 11 years old, after an advisory11.1% next fail2019–20243048
Visibility, 9 to 11 years old, after an advisory6.7% next fail2019–20243048
Lamps, reflectors and electrical equipment, 9 to 11 years old, after an advisory6.6% next fail2019–20243048
Tyres, 9 to 11 years old, after an advisory5.7% next fail2019–20243048
Suspension, 9 to 11 years old, after an advisory5.2% next fail2019–20243048
Body, chassis, structure, 9 to 11 years old, after an advisory4.0% next fail2019–20243048
Seat belts and supplementary restraint systems, 9 to 11 years old, after an advisory3.2% next fail2019–20243048
Noise, emissions and leaks, 9 to 11 years old, after an advisory2.4% next fail2019–20243048
Steering, 9 to 11 years old, after an advisory0.4% next fail2019–20243048
Identification of the vehicle, 9 to 11 years old, after an advisory0.3% next fail2019–20243048
Road wheels, 9 to 11 years old, after an advisory0.2% next fail2019–20243048
Brakes, 9 to 11 years old, after a fail11.7% next fail2019–20242850
Lamps, reflectors and electrical equipment, 9 to 11 years old, after a fail7.9% next fail2019–20242850
Visibility, 9 to 11 years old, after a fail7.0% next fail2019–20242850
Suspension, 9 to 11 years old, after a fail7.0% next fail2019–20242850
Seat belts and supplementary restraint systems, 9 to 11 years old, after a fail6.4% next fail2019–20242850
Tyres, 9 to 11 years old, after a fail5.6% next fail2019–20242850
Body, chassis, structure, 9 to 11 years old, after a fail5.0% next fail2019–20242850
Noise, emissions and leaks, 9 to 11 years old, after a fail3.9% next fail2019–20242850
Road wheels, 9 to 11 years old, after a fail0.4% next fail2019–20242850
Steering, 9 to 11 years old, after a fail0.4% next fail2019–20242850
Identification of the vehicle, 9 to 11 years old, after a fail0.3% next fail2019–20242850

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 18,865 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV

How often does a Seat Mii get a dangerous MOT defect?

The Seat Mii gets a dangerous defect less often than the UK average: 5.4 per 100 first tests against 11.2 across the UK. In the same tests, 22.0 major and 3.5 minor defects were recorded per 100 tests (one test can record several).

bullet · Seat Mii · Dangerous defects · 5.4 vs 11.2 · 2019–2024
Dangerous defects: 5.4 vs 11.2. DVSA MOT bulk data, 24 Sep 2026.
Seat Mii: the numbers behind this answer (2019–2024)
MeasureValueUnitCompared withYearsTests
Dangerous defects5.4per 10011.22019–202499179

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 99,179 (initial tests) · Method: one initial test per test_id; severity not recorded for some 2018–2021 tests · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV

Will my Seat Mii still pass its MOT in a few years?

First-time MOT failures for the Seat Mii go from 12.9% at age 3 to 28.9% at age 12, against 35.7% for all cars aged 12 (2024, n = 18,865).

line · Seat Mii · Age 3 · 12.9 vs 12.4 · 2024
Age 3: 12.9. Age 12: 28.9. DVSA MOT bulk data, 24 Sep 2026.
Seat Mii: the numbers behind this answer (2024)
MeasureValueUnitCompared withYearsTests
Age 312.9% failed first time12.420241136
Age 4 (rough estimate: 281 tests, 95% interval 7.9–15.2%)11.0% failed first time13.12024281
Age 512.3% failed first time15.120241327
Age 615.6% failed first time17.520241272
Age 719.9% failed first time20.220241492
Age 822.8% failed first time23.320242238
Age 922.7% failed first time26.520242679
Age 1024.0% failed first time30.120243130
Full table
Further values · 2024
MeasureValueUnitCompared withYearsTests
Age 1127.8% failed first time33.220243516
Age 1228.9% failed first time35.720241773

Source: DVSA MOT bulk data · Window: 2024 · n = 18,865 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV

How does the Seat Mii compare with cars of its own age and size?

At 1 of 10 ages shown, Seat Miis fail first time more often than comparable models of the same size class; the biggest difference is at age 12, where they fail less often: 28.9% against 40.5% (2024, n = 1,773).

line · Seat Mii · Age 3 · 10.4 vs 10.9 · 2024
Age 3: 10.4. Age 12: 28.9. DVSA MOT bulk data, 24 Sep 2026.
Seat Mii: the numbers behind this answer (2024)
MeasureValueUnitCompared withYearsTests
Age 310.4% fail10.920248172
Age 414.9% fail13.820249307
Age 516.7% fail17.4202412208
Age 618.5% fail20.6202414388
Age 720.2% fail23.5202414883
Age 821.4% fail26.8202413375
Age 923.5% fail30.4202411131
Age 1025.1% fail33.620248452
Full table
Further values · 2024
MeasureValueUnitCompared withYearsTests
Age 1128% fail37.020245297
Age 1228.9% fail40.520241773

Source: DVSA MOT bulk data · Window: 2024 · n = 18,865 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV

Which Seat Mii years should I avoid?

The Seat Mii build year that fails most for its age is 2016: index 108.2 (95% CI 103.9–112.5) against the model's own age norm of 100 (2019–2024, n = 13,470).

Build year matters for the Seat Mii: 2016 Seat Miis fail more than their age would predict, 2014 ones less. Years whose confidence interval includes normal are shown without a label.

bar · Seat Mii · Build year 2012 (worse for its age) · 107.5 vs 100 = normal · 2019–2024
DVSA MOT bulk data, 24 Sep 2026.
Seat Mii: the numbers behind this answer (2019–2024)
MeasureValueUnitCompared withYearsTests
Build year 2012 (worse for its age)107.5index vs own age100 = normal2019–202410713
Build year 2013 (worse for its age)105.7index vs own age100 = normal2019–202421297
Build year 2014 (better for its age)92index vs own age100 = normal2019–202418739
Build year 2015100index vs own age100 = normal2019–202416223
Build year 2016 (worse for its age)108.2index vs own age100 = normal2019–202413470
Build year 201794.9index vs own age100 = normal2019–20247777
Build year 201894.6index vs own age100 = normal2019–20245080
Build year 2019 (better for its age) (rough estimate: 3,992 tests, 95% interval 69.4–84.2)76.8index vs own age100 = normal2019–20243992
Full table
Further values · 2019–2024
MeasureValueUnitCompared withYearsTests
Build year 2020 (rough estimate: 559 tests, 95% interval 80.7–129.2)104.9index vs own age100 = normal2019–2024559

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 18,865 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV

How much does it cost to fix a Seat Mii MOT fail?

Expected repair cost per Seat Mii MOT: about £30 (up to about £57 if more expensive parts are needed), from the chance of failing each item and its most common UK repair price (catalogue estimate, n = 18,865).

Computed, not measured.

bar · Seat Mii · Expected repair bill · 29.8 vs modal price catalogue · price catalogue
DVSA MOT bulk data, 24 Sep 2026.
Seat Mii: the numbers behind this answer (price catalogue)
MeasureValueUnitCompared withYearsTests
Expected repair bill29.8GBP estimatemodal price catalogueprice catalogue18865
Estimated range lower29.8GBP estimatemodal price catalogueprice catalogue18865
Estimated range upper56.7GBP estimatemodal price catalogueprice catalogue18865
Brakes: Front brake pads (parts + labour, typical hatchback)10.7GBP expected contribution150price catalogue18865
Lamps, reflectors and electrical equipment: Battery replacement (standard 12V lead-acid)6.3GBP expected contribution140price catalogue18865
Noise, emissions and leaks: Exhaust rear silencer4.6GBP expected contribution200price catalogue18865
Tyres: Tyre (single mid-range 16" fitted)4.5GBP expected contribution90price catalogue18865
Suspension: Suspension coil spring (single corner)3.8GBP expected contribution180price catalogue18865

Source: DVSA MOT bulk data · Window: price catalogue · n = 18,865 (initial tests) · Method: computed estimate, not measured · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV

Is the Seat Mii more reliable than similar cars?

Of 8 similar models, 5 fail less often for their age than the Seat Mii and 3 as often or more. The Seat Mii has an MOT Risk Index of 86.0, where 100 = normal for its age (2024, n = 18,865).

bar · Seat Mii · Seat Mii (this model) · 86 vs 100 = normal · 2024
DVSA MOT bulk data, 24 Sep 2026.
Seat Mii: the numbers behind this answer (2024)
MeasureValueUnitCompared withYearsTests
Seat Mii (this model)86index100 = normal202418865
Kia Stonic81.3index86202426811
Volkswagen T-Cross79.2index86202423830
Vauxhall Viva83.5index86202438341
Smart Fortwo87.6index86202451770
Skoda Citigo80.8index86202452407
BMW i372.5index86202423610
Hyundai Kona93.2index86202445683
Full table
Further values · 2024
MeasureValueUnitCompared withYearsTests
Seat Arona102.2index86202450672

Source: DVSA MOT bulk data · Window: 2024 · n = 18,865 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV

How many miles does a Seat Mii normally do?

At age 8, the median Seat Mii had covered 42,482 miles by its MOT; the middle half ranged from 30,740 to 57,648 miles (2024, n = 2,238).

line · Seat Mii · Age 3 median · 17502 vs baseline · 2024
Age 3 median: 17502. Age 12 P75: 87783. DVSA MOT bulk data, 24 Sep 2026.
Seat Mii: the numbers behind this answer (2024)
MeasureValueUnitCompared withYearsTests
Age 3 median17502miles20241136
Age 3 P2511923miles20241136
Age 3 P7523665miles20241136
Age 4 median (rough estimate)18669miles2024281
Age 4 P25 (rough estimate)10673miles2024281
Age 4 P75 (rough estimate)25241miles2024281
Age 5 median23629miles20241327
Age 5 P2515337miles20241327
Full table
Further values · 2024
MeasureValueUnitCompared withYearsTests
Age 5 P7534390miles20241327
Age 6 median29857miles20241272
Age 6 P2520165miles20241272
Age 6 P7542221miles20241272
Age 7 median36853miles20241492
Age 7 P2524052miles20241492
Age 7 P7550545miles20241492
Age 8 median42482miles20242238
Age 8 P2530740miles20242238
Age 8 P7557648miles20242238
Age 9 median48289miles20242679
Age 9 P2534680miles20242679
Age 9 P7564584miles20242679
Age 10 median54983miles20243130
Age 10 P2540018miles20243130
Age 10 P7572617miles20243130
Age 11 median61834miles20243516
Age 11 P2544767miles20243516
Age 11 P7580290miles20243516
Age 12 median66505miles20241773
Age 12 P2548223miles20241773
Age 12 P7587783miles20241773

Source: DVSA MOT bulk data · Window: 2024 · n = 18,865 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV

Does high mileage mean more Seat Mii MOT failures at the same age?

At ages 10–14, 15.6% of Seat Miis with under 40,000 miles failed first time, against 42.9% of those with over 140,000 miles (2024, n = 1,801). Inside this age group, higher mileage goes with more failures.

bar · Seat Mii · Age 3–5, <40k miles · 11.3 vs baseline · 2024
DVSA MOT bulk data, 24 Sep 2026.
Seat Mii: the numbers behind this answer (2024)
MeasureValueUnitCompared withYearsTests
Age 3–5, <40k miles11.3% failed first time20242467
Age 3–5, 40-70k miles (rough estimate: 256 tests, 95% interval 17.2–27.3%)21.9% failed first time2024256
Age 6–9, <40k miles14.9% failed first time20243656
Age 6–9, 40-70k miles23.9% failed first time20243102
Age 6–9, 70-100k miles34.5% failed first time2024779
Age 6–9, 100-140k miles (rough estimate: 128 tests, 95% interval 33.2–50.1%)41.4% failed first time2024128
Age 10–14, <40k miles15.6% failed first time20241724
Age 10–14, 40-70k miles24.7% failed first time20243678
Full table
Further values · 2024
MeasureValueUnitCompared withYearsTests
Age 10–14, 70-100k miles33.2% failed first time20242259
Age 10–14, 100-140k miles41.2% failed first time2024677
Age 10–14, 140k+ miles (rough estimate: 77 tests, 95% interval 32.4–54%)42.9% failed first time202477

Source: DVSA MOT bulk data · Window: 2024 · n = 18,865 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV

How many miles does a Seat Mii last?

2.3% of Seat Miis tested had reached 100,000 miles, and 0.1% had reached 150,000 (2024, n = 2,238).

line · Seat Mii · 100,000 miles · 2.3 vs baseline · 2024
100,000 miles: 2.3. 200,000 miles (rou: 0.0. DVSA MOT bulk data, 24 Sep 2026.
Seat Mii: the numbers behind this answer (2024)
MeasureValueUnitCompared withYearsTests
100,000 miles2.3% of tested cars20242238
150,000 miles (rough estimate: 123 tests, 95% interval 0.1–0.1%)0.1% of tested cars2024123
200,000 miles (rough estimate: 19 tests, 95% interval 0.0–0.0%)0.0% of tested cars202419

Source: DVSA MOT bulk data · Window: 2024 · n = 18,865 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV

Is the Seat Mii driven more or less than average, and does that change the picture?

Matched on annual mileage as well as age, the Seat Mii index is 98.0, against 84.5 on age alone (2019–2024, n = 18,865).

slope · Seat Mii · Age and mileage adjusted index · 98 vs 84.5 · 2019–2024
Age and mileage adjusted index: 84.5 vs 98. DVSA MOT bulk data, 24 Sep 2026.
Seat Mii: the numbers behind this answer (2019–2024)
MeasureValueUnitCompared withYearsTests
Age and mileage adjusted index98index84.52019–202418865

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 18,865 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV

Which Seat Mii fuel fails its MOT less?

Petrol Seat Miis failed first time in 23.1% of tests and electric ones in 12.6%, before allowing for age (2024, n = 18,862).

bar · Seat Mii · Electric · 12.6 vs other fuels · 2024
DVSA MOT bulk data, 24 Sep 2026.
Seat Mii: the numbers behind this answer (2024)
MeasureValueUnitCompared withYearsTests
Electric12.6% fail first timeother fuels20241414
Petrol23.1% fail first timeother fuels202417448

Source: DVSA MOT bulk data · Window: 2024 · n = 18,865 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV

Which Seat Mii engine is best?

No Seat Mii engine band clearly fails less or more for its age: the capacity bands are within 5 index points of each other or their 95% intervals overlap (2024, n = 18,865).

bar · Seat Mii · Petrol under 1.0 litre · 100 vs 100 = model average · 2024
DVSA MOT bulk data, 24 Sep 2026.
Seat Mii: the numbers behind this answer (2024)
MeasureValueUnitCompared withYearsTests
Petrol under 1.0 litre100index vs model norm100 = model average202497275
Petrol 1.0–1.2 litre (rough estimate: 143 tests, 95% interval 98.2–165.4)129.2index vs model norm100 = model average2024143

Source: DVSA MOT bulk data · Window: 2024 · n = 18,865 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV

Where in Britain does the Seat Mii fail its MOT most?

Seat Mii fails first-time MOTs most in Motherwell (ML): 30.0% against 19.7% across Britain for this model, both 2019–2024 (2024, n = 446).

First-time failure rates for the Seat Mii range from 13.6% to 25.8% by area, before allowing for age: a narrower spread than for the typical model.

map · Seat Mii · Motherwell (ML) (rough estimate: 446 tests, 95% interval 26.0–34.5%) · 30.0 vs 22.3 · 2024
Scotland. N. England. Wales. London. S. West. % failing. 15%. 24%. DVSA MOT bulk data, 24 Sep 2026.
Seat Mii: the numbers behind this answer (2024)
MeasureValueUnitCompared withYearsTests
Motherwell (ML) (rough estimate: 446 tests, 95% interval 26.0–34.5%)30.0% fail first time22.32024446
Dundee (DD) (rough estimate: 467 tests, 95% interval 25.0–33.2%)28.9% fail first time22.32024467
Paisley (PA)25.8% fail first time22.32024586
Torquay (TQ)13.6% fail first time22.32024736
Chelmsford (CM)14.2% fail first time22.320241262
Stevenage (SG)14.6% fail first time22.320241053
Aberdeen (AB)25.7% fail first time22.32024641
Edinburgh (EH)25.7% fail first time22.320241698
Full table
Further values · 2024
MeasureValueUnitCompared withYearsTests
Watford (WD) (rough estimate: 335 tests, 95% interval 21.3–30.6%)25.7% fail first time22.32024335
Falkirk (FK) (rough estimate: 449 tests, 95% interval 21.4–29.4%)25.2% fail first time22.32024449
London W (W) (rough estimate: 155 tests, 95% interval 19.0–32.5%)25.2% fail first time22.32024155
Kirkcaldy (KY)24.3% fail first time22.32024798
Perth (PH) (rough estimate: 214 tests, 95% interval 19.0–30.5%)24.3% fail first time22.32024214
Glasgow (G)23.6% fail first time22.320242017
Cardiff (CF)23.5% fail first time22.320242011
Tonbridge (TN)23.5% fail first time22.320242771
London SW (SW) (rough estimate: 271 tests, 95% interval 18.6–28.6%)23.3% fail first time22.32024271
Salisbury (SP) (rough estimate: 404 tests, 95% interval 19.2–27.4%)23.0% fail first time22.32024404
Carlisle (CA)23.0% fail first time22.32024748
Manchester (M)22.9% fail first time22.320241251
Shrewsbury (SY) (rough estimate: 341 tests, 95% interval 18.7–27.6%)22.9% fail first time22.32024341
Harrogate (HG) (rough estimate: 375 tests, 95% interval 18.5–26.9%)22.4% fail first time22.32024375
Leeds (LS)22.0% fail first time22.320241576
Ilford (IG) (rough estimate: 123 tests, 95% interval 15.5–30.1%)21.9% fail first time22.32024123
Harrow (HA) (rough estimate: 292 tests, 95% interval 17.6–27.0%)21.9% fail first time22.32024292
Chester (CH)21.8% fail first time22.32024674
London N (N) (rough estimate: 294 tests, 95% interval 17.4–26.8%)21.8% fail first time22.32024294
Inverness (IV) (rough estimate: 411 tests, 95% interval 17.9–25.9%)21.6% fail first time22.32024411
Gloucester (GL)21.6% fail first time22.320241110
Blackpool (FY) (rough estimate: 458 tests, 95% interval 18.1–25.6%)21.6% fail first time22.32024458
Bristol (BS)21.6% fail first time22.320242552
London E (E) (rough estimate: 176 tests, 95% interval 16.2–28.2%)21.6% fail first time22.32024176
Brighton (BN)21.6% fail first time22.320241163
Swansea (SA)21.5% fail first time22.320242363
Darlington (DL)21.5% fail first time22.32024721
Wigan (WN) (rough estimate: 239 tests, 95% interval 16.6–27.0%)21.3% fail first time22.32024239
Durham (DH)21.3% fail first time22.32024680
Kilmarnock (KA)21.3% fail first time22.32024527
Oxford (OX)21.2% fail first time22.320241239
Stockport (SK)21.1% fail first time22.320241154
Redhill (RH)21.1% fail first time22.320241016
York (YO)21.0% fail first time22.320241350
Milton Keynes (MK)20.9% fail first time22.320241133
Northampton (NN)20.9% fail first time22.320241390
Cambridge (CB)20.9% fail first time22.32024959
Halifax (HX) (rough estimate: 309 tests, 95% interval 16.6–25.6%)20.7% fail first time22.32024309
Peterborough (PE)20.7% fail first time22.320241215
Stoke-on-Trent (ST)20.6% fail first time22.320241168
Birmingham (B)20.4% fail first time22.320242193
Blackburn (BB)20.4% fail first time22.32024574
Leicester (LE)20.3% fail first time22.320241510
Warrington (WA)20.2% fail first time22.32024736
Luton (LU) (rough estimate: 337 tests, 95% interval 16.2–24.8%)20.2% fail first time22.32024337
London SE (SE) (rough estimate: 452 tests, 95% interval 16.7–24.1%)20.1% fail first time22.32024452
Coventry (CV)20.0% fail first time22.320241319
Galashiels (TD) (rough estimate: 190 tests, 95% interval 14.9–26.3%)20% fail first time22.32024190
Cleveland (TS)19.9% fail first time22.32024705
London NW (NW) (rough estimate: 257 tests, 95% interval 15.4–25.1%)19.8% fail first time22.32024257
Slough (SL) (rough estimate: 415 tests, 95% interval 16.2–23.9%)19.8% fail first time22.32024415
Huddersfield (HD)19.8% fail first time22.32024709
Lincoln (LN)19.5% fail first time22.32024630
Hereford (HR) (rough estimate: 329 tests, 95% interval 15.5–24.1%)19.4% fail first time22.32024329
Oldham (OL)19.4% fail first time22.32024773
Derby (DE)19.4% fail first time22.320241543
Newcastle (NE)19.3% fail first time22.320241995
Truro (TR)19.2% fail first time22.320241442
Hemel Hempstead (HP)19.2% fail first time22.320241085
Uxbridge (UB) (rough estimate: 230 tests, 95% interval 14.6–24.7%)19.1% fail first time22.32024230
Newport (NP)19.0% fail first time22.320241228
Wolverhampton (WV)18.9% fail first time22.32024697
Plymouth (PL)18.9% fail first time22.320241083
Bradford (BD)18.9% fail first time22.32024793
Guildford (GU)18.8% fail first time22.320241418
Twickenham (TW) (rough estimate: 384 tests, 95% interval 15.2–23.0%)18.8% fail first time22.32024384
Sutton (SM) (rough estimate: 123 tests, 95% interval 12.8–26.5%)18.7% fail first time22.32024123
Reading (RG)18.6% fail first time22.320241457
Hull (HU)18.6% fail first time22.32024835
Portsmouth (PO)18.4% fail first time22.320241244
Swindon (SN)18.3% fail first time22.320241059
Crewe (CW)18.1% fail first time22.32024806
Southampton (SO)18.1% fail first time22.32024941
Sunderland (SR)18.1% fail first time22.32024830
Doncaster (DN)18.0% fail first time22.320241240
Worcester (WR)17.9% fail first time22.32024873
Exeter (EX)17.7% fail first time22.320241089
Bournemouth (BH)17.6% fail first time22.32024807
Croydon (CR) (rough estimate: 432 tests, 95% interval 14.3–21.5%)17.6% fail first time22.32024432
Preston (PR)17.5% fail first time22.32024895
Romford (RM) (rough estimate: 224 tests, 95% interval 13.0–22.9%)17.4% fail first time22.32024224
Bolton (BL) (rough estimate: 461 tests, 95% interval 14.2–21.1%)17.4% fail first time22.32024461
Medway (ME)16.9% fail first time22.32024580
Dartford (DA)16.8% fail first time22.32024572
Sheffield (S)16.8% fail first time22.320242809
Norwich (NR)16.7% fail first time22.320241530
Wakefield (WF)16.7% fail first time22.32024996
Dudley (DY)16.7% fail first time22.32024594
Walsall (WS)16.6% fail first time22.32024501
Ipswich (IP)16.5% fail first time22.320241088
St Albans (AL)16.4% fail first time22.32024694
Enfield (EN)16.4% fail first time22.32024501
Llandudno (LL)16.3% fail first time22.32024725
Liverpool (L)16.2% fail first time22.32024817
Telford (TF) (rough estimate: 223 tests, 95% interval 11.9–21.5%)16.1% fail first time22.32024223
Colchester (CO)16.1% fail first time22.32024676
Taunton (TA) (rough estimate: 362 tests, 95% interval 12.6–20.2%)16.0% fail first time22.32024362
Nottingham (NG)15.7% fail first time22.320242156
Canterbury (CT)15.6% fail first time22.320241190
Kingston upon Thames (KT)15.5% fail first time22.32024569
Bromley (BR) (rough estimate: 405 tests, 95% interval 12.1–19.1%)15.3% fail first time22.32024405
Bath (BA)15.2% fail first time22.32024843
Lancaster (LA)15.2% fail first time22.32024706
Dorchester (DT) (rough estimate: 247 tests, 95% interval 11.1–20.0%)15.0% fail first time22.32024247
Southend-on-Sea (SS) (rough estimate: 475 tests, 95% interval 12.0–18.4%)14.9% fail first time22.32024475

Source: DVSA MOT bulk data · Window: 2024 · n = 18,865 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV

Does a Seat Mii rust more than average?

Allowing for age, Seat Mii MOTs record corrosion failures at 0.1 times the national rate: 0.11% of tests against 0.77% (2024 + geographic layers, n = 18,844).

Computed, not measured.

slope · Seat Mii · Salt belt susceptibility · 0.1 vs 1 · 2024 + geographic layers
Salt belt susceptibility: 1 vs 0.1. DVSA MOT bulk data, 24 Sep 2026.
Seat Mii: the numbers behind this answer (2024 + geographic layers)
MeasureValueUnitCompared withYearsTests
Salt belt susceptibility0.1ratio estimate12024 + geographic layers18844

Source: DVSA MOT bulk data · Window: 2024 + geographic layers · n = 18,865 (initial tests) · Method: computed estimate, not measured · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV

Is a Seat Mii ULEZ compliant?

All Seat Miis tested are likely ULEZ-compliant, judged from fuel type and first-use date; check a specific car with TfL's vehicle checker (2024).

Computed, not measured.

stacked · Seat Mii · Likely compliant · 100.0 vs baseline · 2024
DVSA MOT bulk data, 24 Sep 2026.
Seat Mii: the numbers behind this answer (2024)
MeasureValueUnitCompared withYearsTests
Likely compliant100.0% estimate202418865

Source: DVSA MOT bulk data · Window: 2024 · n = 18,865 (initial tests) · Method: computed estimate, not measured · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV

What do six years of MOTs show about owning a Seat Mii?

Of failed Seat Mii MOTs, 56.9% were retested the same day and a further 41.5% within 10 days; the median failed car passed its retest after 0 days (2019–2024, n = 13,012).

bar · Seat Mii · Same-day retest · 56.9 vs failed initial tests · 2019–2024
DVSA MOT bulk data, 24 Sep 2026.
Seat Mii: the numbers behind this answer (2019–2024)
MeasureValueUnitCompared withYearsTests
Same-day retest56.9%failed initial tests2019–202413012
Retest within 10 days41.5%failed initial tests2019–202413012
Clean MOT streak55.0%observed chains2019–202417505
Repeat advisory20.5%observed chains2019–202417505
Decreasing odometer1.0% mileage anomalyobserved chains2019–202417942

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 18,865 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV

Is low mileage better for a Seat Mii?

Seat Miis aged 5 to 11 doing under 5,000 miles a year failed first time in 15.1% of tests, against 29.3% for those doing 8,000 to 12,000 miles (2019–2024, n = 32,122).

bullet · Seat Mii · Low-use first-time failure · 15.1 vs 29.3 · 2019–2024
Low-use first-time failure: 15.1 vs 29.3. DVSA MOT bulk data, 24 Sep 2026.
Seat Mii: the numbers behind this answer (2019–2024)
MeasureValueUnitCompared withYearsTests
Low-use first-time failure15.1%29.32019–202432122
Low-use gap-14.2percentage points8–12k miles2019–202432122

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 18,865 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV

How many years is a Seat Mii likely to last?

Seat Miis aged 10 are forecast to keep taking MOTs for at least 1.3 more years; the survival curve is observed only until age 12, so the true figure is likely higher.

Computed, not measured.

Forecast, not a prediction for a particular car.

bar · Seat Mii · Age 5 · 5.7 vs baseline · survival forecast
DVSA MOT bulk data, 24 Sep 2026.
Seat Mii: the numbers behind this answer (survival forecast)
MeasureValueUnitCompared withYearsTests
Age 55.7years forecastsurvival forecast0
Age 8 (at least; observed only until age 12)2.7years forecastsurvival forecast0
Age 10 (at least; observed only until age 12)1.3years forecastsurvival forecast0
Age 12 (at least; observed only until age 12)0.5years forecastsurvival forecast0

Source: DVSA MOT bulk data · Window: survival forecast · n = 18,865 (initial tests) · Method: computed estimate, not measured · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV

Which Seat Miis are still on the road?

In 2024, for every 100 Seat Miis tested at ages 4 to 6, about 15 were tested at age 12 (2024, n = 1,773).

line · Seat Mii · Age 3 · 68.3 vs baseline · 2024
Age 3: 68.3. Age 12: 14.8. DVSA MOT bulk data, 24 Sep 2026.
Seat Mii: the numbers behind this answer (2024)
MeasureValueUnitCompared withYearsTests
Age 368.3% of age 4–6 baseline20248172
Age 477.8% of age 4–6 baseline20249307
Age 5 (at least as many as at ages 4–6)100% of age 4–6 baseline202412208
Age 6 (at least as many as at ages 4–6)100% of age 4–6 baseline202414388
Age 7 (at least as many as at ages 4–6)100% of age 4–6 baseline202414883
Age 8 (at least as many as at ages 4–6)100% of age 4–6 baseline202413375
Age 993% of age 4–6 baseline202411131
Age 1070.6% of age 4–6 baseline20248452
Full table
Further values · 2024
MeasureValueUnitCompared withYearsTests
Age 1144.3% of age 4–6 baseline20245297
Age 1214.8% of age 4–6 baseline20241773

Source: DVSA MOT bulk data · Window: 2024 · n = 18,865 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV

If a Seat Mii fails, does it fail again?

27.4% of Seat Miis that failed an MOT failed the next one too, against 18.1% after a pass (2019–2024, n = 5,265). The failure most likely to come back is ‘body, chassis, structure’: 32.6% of those fails recurred at the next MOT.

bullet · Seat Mii · Repeat after fail · 27.4 vs 18.1 · 2019–2024
Repeat after fail: 27.4 vs 18.1. DVSA MOT bulk data, 24 Sep 2026.
Seat Mii: the numbers behind this answer (2019–2024)
MeasureValueUnitCompared withYearsTests
Repeat after fail27.4%18.12019–20245265

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 18,865 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV

Which Seat Mii faults come together?

On Seat Miis, ‘body, chassis, structure’ and ‘noise, emissions and leaks’ failures turn up together 10.1 times as often as chance would predict (2024, n = 189).

Seat Mii: the numbers behind this answer (2024)
MeasureValueUnitCompared withYearsTests
Body, chassis, structure + Noise, emissions and leaks (rough estimate: 189 tests, 95% interval 8.7–11.6)10.1liftexpected joint rate2024189
Lamps, reflectors and electrical equipment + Steering (rough estimate: 36 tests, 95% interval 6.0–11.9)8.6liftexpected joint rate202436
Identification of the vehicle + Lamps, reflectors and electrical equipment (rough estimate: 24 tests, 95% interval 4.2–9.8)6.6liftexpected joint rate202424
Lamps, reflectors and electrical equipment + Road Wheels (rough estimate: 25 tests, 95% interval 4.2–9.5)6.5liftexpected joint rate202425
Body, chassis, structure + Suspension (rough estimate: 178 tests, 95% interval 5.3–7.2)6.2liftexpected joint rate2024178
Body, chassis, structure + Lamps, reflectors and electrical equipment (rough estimate: 313 tests, 95% interval 5.3–6.6)5.9liftexpected joint rate2024313
Brakes + Lamps, reflectors and electrical equipment5.8liftexpected joint rate2024820
Lamps, reflectors and electrical equipment + Suspension (rough estimate: 310 tests, 95% interval 4.9–6.2)5.5liftexpected joint rate2024310
Full table
Further values · 2024
MeasureValueUnitCompared withYearsTests
Lamps, reflectors and electrical equipment + Seat belts and supplementary restraint systems (rough estimate: 282 tests, 95% interval 4.8–6.1)5.4liftexpected joint rate2024282
Road Wheels + Tyres (rough estimate: 22 tests, 95% interval 3.3–7.9)5.2liftexpected joint rate202422
Brakes + Steering (rough estimate: 29 tests, 95% interval 3.4–7.3)5.1liftexpected joint rate202429
Brakes + Suspension (rough estimate: 383 tests, 95% interval 4.5–5.6)5.0liftexpected joint rate2024383
Body, chassis, structure + Brakes (rough estimate: 360 tests, 95% interval 4.5–5.6)5.0liftexpected joint rate2024360
Noise, emissions and leaks + Suspension (rough estimate: 99 tests, 95% interval 4.0–6.1)5.0liftexpected joint rate202499
Brakes + Seat belts and supplementary restraint systems (rough estimate: 350 tests, 95% interval 4.4–5.5)5.0liftexpected joint rate2024350
Lamps, reflectors and electrical equipment + Noise, emissions and leaks (rough estimate: 180 tests, 95% interval 4.2–5.7)4.9liftexpected joint rate2024180
Brakes + Identification of the vehicle (rough estimate: 24 tests, 95% interval 3.1–7.2)4.8liftexpected joint rate202424
Body, chassis, structure + Seat belts and supplementary restraint systems (rough estimate: 124 tests, 95% interval 3.9–5.5)4.7liftexpected joint rate2024124
Lamps, reflectors and electrical equipment + Tyres4.5liftexpected joint rate2024508
Steering + Tyres (rough estimate: 20 tests, 95% interval 2.7–6.7)4.3liftexpected joint rate202420
Brakes + Road Wheels (rough estimate: 22 tests, 95% interval 2.6–6.3)4.2liftexpected joint rate202422
Brakes + Tyres4.0liftexpected joint rate2024610
Steering + Visibility (rough estimate: 25 tests, 95% interval 2.5–5.7)3.9liftexpected joint rate202425
Lamps, reflectors and electrical equipment + Visibility3.8liftexpected joint rate2024613
Brakes + Noise, emissions and leaks (rough estimate: 176 tests, 95% interval 3.0–4.1)3.5liftexpected joint rate2024176
Road Wheels + Visibility (rough estimate: 21 tests, 95% interval 2.2–5.3)3.5liftexpected joint rate202421
Seat belts and supplementary restraint systems + Tyres (rough estimate: 199 tests, 95% interval 3.0–4.0)3.5liftexpected joint rate2024199
Seat belts and supplementary restraint systems + Suspension (rough estimate: 97 tests, 95% interval 2.8–4.2)3.4liftexpected joint rate202497
Body, chassis, structure + Tyres (rough estimate: 190 tests, 95% interval 2.8–3.8)3.3liftexpected joint rate2024190
Seat belts and supplementary restraint systems + Visibility (rough estimate: 257 tests, 95% interval 2.8–3.6)3.2liftexpected joint rate2024257
Tyres + Visibility3.1liftexpected joint rate2024545
Suspension + Tyres (rough estimate: 191 tests, 95% interval 2.7–3.6)3.1liftexpected joint rate2024191
Body, chassis, structure + Visibility (rough estimate: 239 tests, 95% interval 2.6–3.3)2.9liftexpected joint rate2024239
Brakes + Visibility2.9liftexpected joint rate2024623
Noise, emissions and leaks + Seat belts and supplementary restraint systems (rough estimate: 51 tests, 95% interval 2.1–3.6)2.8liftexpected joint rate202451
Noise, emissions and leaks + Tyres (rough estimate: 103 tests, 95% interval 2.1–3.1)2.6liftexpected joint rate2024103
Noise, emissions and leaks + Visibility (rough estimate: 139 tests, 95% interval 2.1–2.9)2.5liftexpected joint rate2024139
Suspension + Visibility (rough estimate: 191 tests, 95% interval 1.9–2.5)2.2liftexpected joint rate2024191
Body, chassis, structure + Steering (seen together; too few for a multiplier)18tests with both202418
Identification of the vehicle + Visibility (seen together; too few for a multiplier)18tests with both202418
Identification of the vehicle + Tyres (seen together; too few for a multiplier)16tests with both202416
Steering + Suspension (seen together; too few for a multiplier)13tests with both202413
Body, chassis, structure + Identification of the vehicle (seen together; too few for a multiplier)9tests with both20249
Noise, emissions and leaks + Steering (seen together; too few for a multiplier)8tests with both20248
Identification of the vehicle + Seat belts and supplementary restraint systems (seen together; too few for a multiplier)8tests with both20248
Road Wheels + Seat belts and supplementary restraint systems (seen together; too few for a multiplier)8tests with both20248
Identification of the vehicle + Suspension (seen together; too few for a multiplier)8tests with both20248
Road Wheels + Suspension (seen together; too few for a multiplier)8tests with both20248
Seat belts and supplementary restraint systems + Steering (seen together; too few for a multiplier)8tests with both20248
Body, chassis, structure + Road Wheels (seen together; too few for a multiplier)6tests with both20246

Source: DVSA MOT bulk data · Window: 2024 · n = 18,865 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV

Has the Seat Mii had safety recalls?

DVSA lists 6 safety recall campaigns matched to the Seat Mii; check whether yours has been fixed, using its registration number.

Seat Mii: the numbers behind this answer (DVSA register)
MeasureValueUnitCompared withYearsTests
DVSA recall campaigns matched6campaignsDVSA registerDVSA register18865

Source: DVSA register; recall effect covers 11 of 761 models · Window: DVSA register · n = 18,865 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV

What does a Seat Mii cost to run in a fleet?

Of every 100 Seat Miis tested at age 5, about 12 failed the MOT first time (rough estimate); at age 10, about 24. These are one-year rates for different cars tested in the same year, not a fleet followed over time; the steepest one-year step in this cross-section is between cars aged 10 and 11, 3.83 percentage points (2024).

Seat Mii: the numbers behind this answer (2024)
MeasureValueUnitCompared withYearsTests
Age 3 (rough estimate: 1,136 tests, 95% interval 11.1–15.0%)12.9% fail first time20241136
Age 4 (rough estimate: 281 tests, 95% interval 7.9–15.2%)11.0% fail first time2024281
Age 5 (rough estimate: 1,327 tests, 95% interval 10.6–14.2%)12.3% fail first time20241327
Age 6 (rough estimate: 1,272 tests, 95% interval 13.7–17.7%)15.6% fail first time20241272
Age 7 (rough estimate: 1,492 tests, 95% interval 18.0–22.0%)19.9% fail first time20241492
Age 822.8% fail first time20242238
Age 922.7% fail first time20242679
Age 1024.0% fail first time20243130
Full table
Further values · 2024
MeasureValueUnitCompared withYearsTests
Age 1127.8% fail first time20243516
Age 12 (rough estimate: 1,773 tests, 95% interval 26.9–31.1%)28.9% fail first time20241773

Source: DVSA MOT bulk data · Window: 2024 · n = 18,865 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV

Does the Seat Mii fail inspections in other countries too?

In the Netherlands, 38.2% of Seat Miis failed their periodic roadworthiness inspection, against 50.8% for all cars there (2024 by country, n = 17,510 inspections).

Inspections abroad point the same way: in Norway, Finland and the Netherlands the Seat Mii also fails less often than the national average.

bullet · Seat Mii · Norway · 24.4 vs 33.7 · 2024 by country
Norway: 24.4 vs 33.7. Finland: 8.4 vs 26.3. Netherlands: 38.2 vs 50.8. Statens vegvesen PKK (CC BY 4.0), Traficom Katsastus (CC BY 4.0), RDW APK (CC0), adapted; covers 430 of 761 models, 24 Sep 2026.
Seat Mii: the numbers behind this answer (2024 by country)
MeasureValueUnitCompared withYearsTests
Norway24.4% failed33.72024 by country1038
Finland8.4% failed26.32024 by country562
Netherlands38.2% failed50.82024 by country17510

Source: Statens vegvesen PKK (CC BY 4.0), Traficom Katsastus (CC BY 4.0), RDW APK (CC0), adapted; covers 430 of 761 models · Window: 2024 by country · n = 18,865 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV · licences and full notice

Does the month of a Seat Mii MOT matter?

Seat Miis fail first time most in November (22.1%, against 30.6% for all cars that month) and least in March (17.5%) (2024, n = 18,865).

line · Seat Mii · January · 20.3 vs 31.1 · 2024
January: 20.3. December: 21.7. DVSA MOT bulk data, 24 Sep 2026.
Seat Mii: the numbers behind this answer (2024)
MeasureValueUnitCompared withYearsTests
January20.3% fail first time31.120248001
February20.1% fail first time30.020247701
March17.5% fail first time28.3202411368
April19.6% fail first time29.820245344
May19.0% fail first time28.820246425
June19.3% fail first time28.120247823
July19.9% fail first time29.320248042
August19.6% fail first time29.220249048
Full table
Further values · 2024
MeasureValueUnitCompared withYearsTests
September18.7% fail first time28.2202410946
October20.4% fail first time30.320249899
November22.1% fail first time30.620248372
December21.7% fail first time29.320246210

Source: DVSA MOT bulk data · Window: 2024 · n = 18,865 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV

Not enough tests for… (and why)

Real-world MPG against the official figure (manufacturer level)

layer not yet computed for this model (covers 19 of 761 models). 18,865 initial Seat Mii tests are in the published model cohort.

Source: European Commission OBFCM; covers 19 of 761 models · Window: 2021+ cohorts · n = 18,865 (initial tests) · Method: computed estimate, not measured · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV

See the Peugeot 108, a car of the same inspection class with 4.1× the tests · Check your car by registration

How to cite this page

MOT Risk Index (2026). Seat Mii MOT statistics 2024 (data release dvsa-2024-v2; full dataset motriskindex-families-2024-v5, DOI 10.5281/zenodo.22975051), updated 24 September 2026. motriskindex.co.uk/cars/seat-mii/

How the MOT Risk Index and every figure on this page are calculated: methodology.

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Seat Mii MOT: quick answers

What is the Seat Mii first-time MOT pass rate?

77.7% of first attempts passed in 2024 (18,865 tests). Retests after repair are excluded; cars fixed at the test centre (PRS) are shown separately.

Why does this number differ from other sites?

Other sites may count retests or all attempts. This page uses 18,865 primary tests: 22.27% failed first time and 82.9% passed when cars fixed at the test centre (PRS) count as passes. The age-adjusted MOT Risk Index 86 is shown separately.