MOT Risk Index.co.uk

Smart Roadster MOT pass rate and common problems

74.6% of Smart Roadsters passed the 2024 MOT (based on 1,584 first tests): 69.6% at the first attempt and 5.0% after a fix at the test centre (PRS). About 3 in 10 failed the first attempt. For its age, it fails 28% less often than normal: MOT Risk Index 72.3 (95% CI 67.1–77.8; 100 = normal).

Smart Roadster at a glance, 2024 MOT
MeasureValueUnitCompared withYearsTests
MOT pass rate74.6%incl. 5.0% fixed at the test centre20241584
Passed at the first attempt69.6%all first tests20241584
MOT Risk Index (95% CI 67.1–77.8)72.3index100 = normal for its age · rank 194 (tied) of 761 (1 = fails least for its age)20241584
Biggest excess: Steering6.9per 1006.2 same-age2019–202411977
Dangerous defects7.4per 10011.2 UK, not age-adjusted2019–202411977
Advisory items174.4per 100127.1 UK, not age-adjusted2019–202411977
strip · Smart Roadster · MOT Risk Index · 72.3 vs 100 = normal · 2024
MOT Risk Index · Smart Roadster. 0–240; 100 = normal for its age; median model 92.8 · rank 194 (tied) of 761 (1 = fails least for its age). It would rank between 170 and 241 anywhere within its 95% interval, other models held where they are. DVSA, 2024.
Smart Roadster index position among 761 models
MeasureValueUnitCompared withYearsTests
Rank194of 761published models, 1 = fails least for its age20241584
Best rank within its 95% interval170rankother models held where they are20241584
Worst rank within its 95% interval241rankother models held where they are20241584

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Data release dvsa-2024-v2 (24 Sep 2026) · full dataset (v5). This model's index changed from 75.7 to 72.3 in the 24 September 2026 release, after duplicate test records were removed.

What actually fails on a Smart Roadster MOT, and how often?

Smart Roadster MOTs fail most often on ‘lamps, reflectors and electrical equipment’: 34 per 100 tests, against 39.8 for UK cars of the same age (2019–2024, n = 11,977).

bar · Smart Roadster · Lamps, reflectors and electrical equipment · 34 vs 39.8 · 2019–2024
DVSA MOT bulk data, 24 Sep 2026.
Smart Roadster: the numbers behind this answer (2019–2024)
MeasureValueUnitCompared withYearsTests
Lamps, reflectors and electrical equipment34per 10039.82019–20244067
Brakes18.2per 10024.22019–20242174
Suspension15.4per 10032.32019–20241850
Visibility8.3per 10012.82019–2024989
Steering6.9per 1006.22019–2024827
Tyres5.8per 10010.52019–2024700

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 11,977 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV

Will my Smart Roadster's advisory become a fail at the next MOT?

Smart Roadster advisories turn into fails more often than on the median model: lamps, reflectors and electrical equipment advisories became a fail at the next MOT 23.8% of the time.

funnel · Smart Roadster · Lamps, reflectors and electrical equipment · 23.8 vs median model · 2019–2024
Advisories on lamps, reflectors and electrical equipment: 23.8 of 100 became a fail on the same item at the next MOT. DVSA MOT bulk data, 24 Sep 2026.
Smart Roadster: the numbers behind this answer (2019–2024)
MeasureValueUnitCompared withYearsTests
Lamps, reflectors and electrical equipment23.8% next failmedian model2019–2024720
Suspension14.5% next failmedian model2019–20242032
Brakes13.7% next failmedian model2019–20242937
Tyres8.5% next failmedian model2019–20241498
Noise, emissions and leaks3.2% next failmedian model2019–2024842

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 1,584 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV

My Smart Roadster got an MOT advisory: what gets flagged most?

Smart Roadster MOTs flag brakes most: 62.4 advisories per 100 tests, against 34.7 across UK tests (2019–2024, n = 11,977).

bar · Smart Roadster · Brakes · 62.4 vs 34.7 · 2019–2024
DVSA MOT bulk data, 24 Sep 2026.
Smart Roadster: the numbers behind this answer (2019–2024)
MeasureValueUnitCompared withYearsTests
Brakes62.4per 10034.72019–20247472
Suspension44.4per 10026.22019–20245321
Tyres28.6per 10039.72019–20243420
Lamps, reflectors and electrical equipment12.5per 1002.82019–20241497
Noise, emissions and leaks10.1per 1005.22019–20241210
Road Wheels4.4per 10012019–2024527

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 11,977 (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 Smart Roadster?

For Smart Roadsters aged 15 to 19 whose last MOT was a pass, the item most likely to fail at the next MOT is ‘lamps, reflectors and electrical equipment’: 12.0% failed on it (2019–2024, n = 2,507).

bar · Smart Roadster · Lamps, reflectors and electrical equipment, 12 to 14 years old, after a pass · 9.7 vs baseline · 2019–2024
DVSA MOT bulk data, 24 Sep 2026.
Smart Roadster: the numbers behind this answer (2019–2024)
MeasureValueUnitCompared withYearsTests
Lamps, reflectors and electrical equipment, 12 to 14 years old, after a pass9.7% next fail2019–2024745
Brakes, 12 to 14 years old, after a pass5.1% next fail2019–2024745
Suspension, 12 to 14 years old, after a pass5.1% next fail2019–2024745
Visibility, 12 to 14 years old, after a pass3.6% next fail2019–2024745
Steering, 12 to 14 years old, after a pass2.3% next fail2019–2024745
Noise, emissions and leaks, 12 to 14 years old, after a pass1.9% next fail2019–2024745
Body, chassis, structure, 12 to 14 years old, after a pass1.7% next fail2019–2024745
Seat belts and supplementary restraint systems, 12 to 14 years old, after a pass0.8% next fail2019–2024745
Full table
Further values · 2019–2024
MeasureValueUnitCompared withYearsTests
Tyres, 12 to 14 years old, after a pass0.7% next fail2019–2024745
Lamps, reflectors and electrical equipment, 12 to 14 years old, after an advisory22.2% next fail2019–2024544
Suspension, 12 to 14 years old, after an advisory11.9% next fail2019–2024544
Brakes, 12 to 14 years old, after an advisory9.7% next fail2019–2024544
Visibility, 12 to 14 years old, after an advisory8.8% next fail2019–2024544
Tyres, 12 to 14 years old, after an advisory5.9% next fail2019–2024544
Steering, 12 to 14 years old, after an advisory4.6% next fail2019–2024544
Body, chassis, structure, 12 to 14 years old, after an advisory3.3% next fail2019–2024544
Noise, emissions and leaks, 12 to 14 years old, after an advisory2.2% next fail2019–2024544
Seat belts and supplementary restraint systems, 12 to 14 years old, after an advisory0.9% next fail2019–2024544
Lamps, reflectors and electrical equipment, 12 to 14 years old, after a fail25.1% next fail2019–2024654
Brakes, 12 to 14 years old, after a fail16.4% next fail2019–2024654
Suspension, 12 to 14 years old, after a fail13.5% next fail2019–2024654
Visibility, 12 to 14 years old, after a fail10.2% next fail2019–2024654
Steering, 12 to 14 years old, after a fail7.8% next fail2019–2024654
Tyres, 12 to 14 years old, after a fail6.1% next fail2019–2024654
Body, chassis, structure, 12 to 14 years old, after a fail5.2% next fail2019–2024654
Noise, emissions and leaks, 12 to 14 years old, after a fail2.8% next fail2019–2024654
Seat belts and supplementary restraint systems, 12 to 14 years old, after a fail2.0% next fail2019–2024654
Identification of the vehicle, 12 to 14 years old, after a fail0.8% next fail2019–2024654
Lamps, reflectors and electrical equipment, 15 to 19 years old, after a pass12.0% next fail2019–20242507
Brakes, 15 to 19 years old, after a pass5.7% next fail2019–20242507
Suspension, 15 to 19 years old, after a pass5.7% next fail2019–20242507
Visibility, 15 to 19 years old, after a pass3.4% next fail2019–20242507
Steering, 15 to 19 years old, after a pass3.1% next fail2019–20242507
Tyres, 15 to 19 years old, after a pass2.2% next fail2019–20242507
Body, chassis, structure, 15 to 19 years old, after a pass2.0% next fail2019–20242507
Noise, emissions and leaks, 15 to 19 years old, after a pass1.9% next fail2019–20242507
Seat belts and supplementary restraint systems, 15 to 19 years old, after a pass1.2% next fail2019–20242507
Identification of the vehicle, 15 to 19 years old, after a pass0.3% next fail2019–20242507
Lamps, reflectors and electrical equipment, 15 to 19 years old, after an advisory18.5% next fail2019–20242395
Suspension, 15 to 19 years old, after an advisory11.7% next fail2019–20242395
Brakes, 15 to 19 years old, after an advisory8.9% next fail2019–20242395
Visibility, 15 to 19 years old, after an advisory7.1% next fail2019–20242395
Steering, 15 to 19 years old, after an advisory5.5% next fail2019–20242395
Tyres, 15 to 19 years old, after an advisory3.5% next fail2019–20242395
Body, chassis, structure, 15 to 19 years old, after an advisory2.9% next fail2019–20242395
Noise, emissions and leaks, 15 to 19 years old, after an advisory2.8% next fail2019–20242395
Seat belts and supplementary restraint systems, 15 to 19 years old, after an advisory1.2% next fail2019–20242395
Road wheels, 15 to 19 years old, after an advisory0.3% next fail2019–20242395
Identification of the vehicle, 15 to 19 years old, after an advisory0.2% next fail2019–20242395
Lamps, reflectors and electrical equipment, 15 to 19 years old, after a fail24.3% next fail2019–20242296
Suspension, 15 to 19 years old, after a fail13.7% next fail2019–20242296
Brakes, 15 to 19 years old, after a fail12.1% next fail2019–20242296
Visibility, 15 to 19 years old, after a fail7.7% next fail2019–20242296
Steering, 15 to 19 years old, after a fail5.9% next fail2019–20242296
Tyres, 15 to 19 years old, after a fail5.2% next fail2019–20242296
Body, chassis, structure, 15 to 19 years old, after a fail4.0% next fail2019–20242296
Noise, emissions and leaks, 15 to 19 years old, after a fail3.7% next fail2019–20242296
Seat belts and supplementary restraint systems, 15 to 19 years old, after a fail2.2% next fail2019–20242296
Road wheels, 15 to 19 years old, after a fail0.7% next fail2019–20242296
Identification of the vehicle, 15 to 19 years old, after a fail0.6% next fail2019–20242296

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 1,584 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV

How often does a Smart Roadster get a dangerous MOT defect?

The Smart Roadster gets a dangerous defect less often than the UK average: 7.4 per 100 first tests against 11.2 across the UK. In the same tests, 73.8 major and 18.1 minor defects were recorded per 100 tests (one test can record several).

bullet · Smart Roadster · Dangerous defects · 7.4 vs 11.2 · 2019–2024
Dangerous defects: 7.4 vs 11.2. DVSA MOT bulk data, 24 Sep 2026.
Smart Roadster: the numbers behind this answer (2019–2024)
MeasureValueUnitCompared withYearsTests
Dangerous defects7.4per 10011.22019–202411977

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 11,977 (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 Smart Roadster still pass its MOT in a few years?

First-time MOT failures for the Smart Roadster go from 37.0% at age 17 (rough estimate: 46 tests, 95% interval 24.5–51.4%) to 27.0% at age 19 (rough estimate: 397 tests, 95% interval 22.8–31.5%), against 43.5% for all cars aged 19 (rough estimate: 397 tests, 95% interval 22.8–31.5%) (2024, n = 1,584).

line · Smart Roadster · Age 17 (rough estimate: 46 tests, 95% interval 24.5–51.4%) · 37.0 vs 43.1 · 2024
Age 17 (rough esti: 37.0. Age 19 (rough esti: 27.0. DVSA MOT bulk data, 24 Sep 2026.
Smart Roadster: the numbers behind this answer (2024)
MeasureValueUnitCompared withYearsTests
Age 17 (rough estimate: 46 tests, 95% interval 24.5–51.4%)37.0% failed first time43.1202446
Age 18 (rough estimate: 150 tests, 95% interval 25.7–40.5%)32.7% failed first time43.92024150
Age 19 (rough estimate: 397 tests, 95% interval 22.8–31.5%)27.0% failed first time43.52024397

Source: DVSA MOT bulk data · Window: 2024 · n = 1,584 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV

How does the Smart Roadster compare with cars of its own age and size?

At every age shown, Smart Roadsters fail first time no more often than comparable models of the same size class; the biggest difference is at age 19, where they fail less often: 30.6% against 50.5% (2024, n = 1,570).

line · Smart Roadster · Age 13 · 30.7 vs 43.3 · 2024
Age 13: 30.7. Age 20: 32.0. DVSA MOT bulk data, 24 Sep 2026.
Smart Roadster: the numbers behind this answer (2024)
MeasureValueUnitCompared withYearsTests
Age 1330.7% fail43.32024270
Age 1434.7% fail45.92024839
Age 1533.5% fail48.020241991
Age 1634.7% fail50.020242117
Age 1732.2% fail50.620242019
Age 1831.5% fail51.020241841
Age 1930.6% fail50.520241570
Age 2032.0% fail49.720241017

Source: DVSA MOT bulk data · Window: 2024 · n = 1,584 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV

Which Smart Roadster years should I avoid?

The Smart Roadster build year that fails most for its age is 2003: index 110.6 (95% CI 101.4–119.8) against the model's own age norm of 100 (2019–2024, n = 1,568).

Build year matters for the Smart Roadster: 2003 Smart Roadsters fail more than their age would predict, 2005 ones less. Years whose confidence interval includes normal are shown without a label.

bar · Smart Roadster · Build year 2003 (worse for its age) (rough estimate: 1,568 tests, 95% interval 101.4–119.8) · 110.6 vs 100 = normal · 2019–2024
DVSA MOT bulk data, 24 Sep 2026.
Smart Roadster: the numbers behind this answer (2019–2024)
MeasureValueUnitCompared withYearsTests
Build year 2003 (worse for its age) (rough estimate: 1,568 tests, 95% interval 101.4–119.8)110.6index vs own age100 = normal2019–20241568
Build year 2004101.8index vs own age100 = normal2019–20245781
Build year 2005 (better for its age) (rough estimate: 2,963 tests, 95% interval 86.5–98.5)92.5index vs own age100 = normal2019–20242963
Build year 2006 (rough estimate: 877 tests, 95% interval 88.9–112.1)100.5index vs own age100 = normal2019–2024877
Build year 2007 (rough estimate: 203 tests, 95% interval 65.8–110.9)88.3index vs own age100 = normal2019–2024203

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 1,584 (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 Smart Roadster MOT fail?

Expected repair cost per Smart Roadster MOT: about £108 (up to about £205 if more expensive parts are needed), from the chance of failing each item and its most common UK repair price (catalogue estimate, n = 1,584).

Computed, not measured.

bar · Smart Roadster · Expected repair bill · 107.8 vs modal price catalogue · price catalogue
DVSA MOT bulk data, 24 Sep 2026.
Smart Roadster: the numbers behind this answer (price catalogue)
MeasureValueUnitCompared withYearsTests
Expected repair bill107.8GBP estimatemodal price catalogueprice catalogue1584
Estimated range lower107.8GBP estimatemodal price catalogueprice catalogue1584
Estimated range upper204.9GBP estimatemodal price catalogueprice catalogue1584
Lamps, reflectors and electrical equipment: Battery replacement (standard 12V lead-acid)47.6GBP expected contribution140price catalogue1584
Suspension: Suspension coil spring (single corner)27.7GBP expected contribution180price catalogue1584
Brakes: Front brake pads (parts + labour, typical hatchback)27.3GBP expected contribution150price catalogue1584
Tyres: Tyre (single mid-range 16" fitted)5.2GBP expected contribution90price catalogue1584

Source: DVSA MOT bulk data · Window: price catalogue · n = 1,584 (initial tests) · Method: computed estimate, not measured · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV

Is the Smart Roadster more reliable than similar cars?

Of 8 similar models, 2 fail less often for their age than the Smart Roadster and 6 as often or more. The Smart Roadster has an MOT Risk Index of 72.3, where 100 = normal for its age (2024, n = 1,584).

bar · Smart Roadster · Smart Roadster (this model) · 72.3 vs 100 = normal · 2024
DVSA MOT bulk data, 24 Sep 2026.
Smart Roadster: the numbers behind this answer (2024)
MeasureValueUnitCompared withYearsTests
Smart Roadster (this model)72.3index100 = normal20241584
Nissan Figaro92.7index72.320242413
Mitsubishi Mirage79index72.3202411282
BMW i372.5index72.3202423610
Smart City-Coupe98.6index72.320244878
Suzuki Celerio70index72.3202427563
Toyota iQ64index72.3202416909
Renault Wind102.4index72.320242065
Full table
Further values · 2024
MeasureValueUnitCompared withYearsTests
SEAT Arosa103index72.320242025

Source: DVSA MOT bulk data · Window: 2024 · n = 1,584 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV

How many miles does a Smart Roadster normally do?

Smart Roadster: Age 17 median (rough estimate) is 61836 miles (2024).

line · Smart Roadster · Age 17 median (rough estimate) · 61836 vs baseline · 2024
Age 17 median (rou: 61836. Age 19 P75 (rough : 96475. DVSA MOT bulk data, 24 Sep 2026.
Smart Roadster: the numbers behind this answer (2024)
MeasureValueUnitCompared withYearsTests
Age 17 median (rough estimate)61836miles202446
Age 18 median (rough estimate)73476miles2024150
Age 18 P25 (rough estimate)53081miles2024150
Age 18 P75 (rough estimate)91300miles2024150
Age 19 median (rough estimate)72235miles2024397
Age 19 P25 (rough estimate)52733miles2024397
Age 19 P75 (rough estimate)96475miles2024397

Source: DVSA MOT bulk data · Window: 2024 · n = 1,584 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV

Does high mileage mean more Smart Roadster MOT failures at the same age?

At ages 15+, 18.6% of Smart Roadsters with under 40,000 miles failed first time, against 35.2% of those with over 140,000 miles (2024, n = 243). No clear mileage gap inside this age group, among cars still being tested.

bar · Smart Roadster · Age 15+, <40k miles (rough estimate: 172 tests, 95% interval 13.5–25.1%) · 18.6 vs baseline · 2024
DVSA MOT bulk data, 24 Sep 2026.
Smart Roadster: the numbers behind this answer (2024)
MeasureValueUnitCompared withYearsTests
Age 15+, <40k miles (rough estimate: 172 tests, 95% interval 13.5–25.1%)18.6% failed first time2024172
Age 15+, 40-70k miles (rough estimate: 463 tests, 95% interval 25–33.2%)28.9% failed first time2024463
Age 15+, 70-100k miles33.6% failed first time2024539
Age 15+, 100-140k miles (rough estimate: 326 tests, 95% interval 27.7–37.8%)32.5% failed first time2024326
Age 15+, 140k+ miles (rough estimate: 71 tests, 95% interval 25.1–46.8%)35.2% failed first time202471

Source: DVSA MOT bulk data · Window: 2024 · n = 1,584 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV

How many miles does a Smart Roadster last?

22.4% of Smart Roadsters tested had reached 100,000 miles, and 2.2% had reached 150,000 (2024, n = 2,661).

line · Smart Roadster · 100,000 miles · 22.4 vs baseline · 2024
100,000 miles: 22.4. 200,000 miles (rou: 0.3. DVSA MOT bulk data, 24 Sep 2026.
Smart Roadster: the numbers behind this answer (2024)
MeasureValueUnitCompared withYearsTests
100,000 miles22.4% of tested cars20242661
150,000 miles (rough estimate: 261 tests, 95% interval 1.9–2.5%)2.2% of tested cars2024261
200,000 miles (rough estimate: 30 tests, 95% interval 0.2–0.4%)0.3% of tested cars202430

Source: DVSA MOT bulk data · Window: 2024 · n = 1,584 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV

Is the Smart Roadster driven more or less than average, and does that change the picture?

Matched on annual mileage as well as age, the Smart Roadster index is 78.6, against 73.0 on age alone (2019–2024, n = 1,584).

slope · Smart Roadster · Age and mileage adjusted index · 78.6 vs 73 · 2019–2024
Age and mileage adjusted index: 73 vs 78.6. DVSA MOT bulk data, 24 Sep 2026.
Smart Roadster: the numbers behind this answer (2019–2024)
MeasureValueUnitCompared withYearsTests
Age and mileage adjusted index78.6index732019–20241584

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 1,584 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV

Which Smart Roadster fuel fails its MOT less?

All Smart Roadsters tested were petrol: 30.4% failed first time (2024, n = 1,583).

bar · Smart Roadster · Petrol · 30.4 vs other fuels · 2024
DVSA MOT bulk data, 24 Sep 2026.
Smart Roadster: the numbers behind this answer (2024)
MeasureValueUnitCompared withYearsTests
Petrol30.4% fail first timeother fuels20241583

Source: DVSA MOT bulk data · Window: 2024 · n = 1,584 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV

Where in Britain does the Smart Roadster fail its MOT most?

Smart Roadster fails first-time MOTs most in Bournemouth (BH): 42.9% against 32.6% across Britain for this model, both 2019–2024 (2024, n = 140).

bar · Smart Roadster · Bournemouth (BH) (rough estimate: 140 tests, 95% interval 35.0–51.1%) · 42.9 vs 30.4 · 2024
DVSA MOT bulk data, 24 Sep 2026.
Smart Roadster: the numbers behind this answer (2024)
MeasureValueUnitCompared withYearsTests
Bournemouth (BH) (rough estimate: 140 tests, 95% interval 35.0–51.1%)42.9% fail first time30.42024140
Portsmouth (PO) (rough estimate: 214 tests, 95% interval 36.1–49.2%)42.5% fail first time30.42024214
Guildford (GU) (rough estimate: 443 tests, 95% interval 37.5–46.6%)42.0% fail first time30.42024443
Plymouth (PL) (rough estimate: 142 tests, 95% interval 13.4–26.2%)19.0% fail first time30.42024142
Kingston upon Thames (KT) (rough estimate: 140 tests, 95% interval 14.2–27.4%)20% fail first time30.42024140
Leeds (LS) (rough estimate: 109 tests, 95% interval 15.3–30.7%)22.0% fail first time30.42024109
Doncaster (DN) (rough estimate: 124 tests, 95% interval 33.6–50.7%)41.9% fail first time30.42024124
Medway (ME) (rough estimate: 192 tests, 95% interval 32.4–46.1%)39.1% fail first time30.42024192
Full table
Further values · 2024
MeasureValueUnitCompared withYearsTests
Preston (PR) (rough estimate: 146 tests, 95% interval 31.5–47.1%)39.0% fail first time30.42024146
Southampton (SO) (rough estimate: 139 tests, 95% interval 31.2–47.1%)38.9% fail first time30.42024139
Salisbury (SP) (rough estimate: 111 tests, 95% interval 30.2–48.0%)38.7% fail first time30.42024111
Llandudno (LL) (rough estimate: 124 tests, 95% interval 30.6–47.5%)38.7% fail first time30.42024124
Brighton (BN) (rough estimate: 158 tests, 95% interval 31.4–46.4%)38.6% fail first time30.42024158
Bristol (BS) (rough estimate: 242 tests, 95% interval 32.1–44.3%)38.0% fail first time30.42024242
London E (E) (rough estimate: 105 tests, 95% interval 27.6–45.7%)36.2% fail first time30.42024105
York (YO) (rough estimate: 114 tests, 95% interval 27.7–45.1%)36.0% fail first time30.42024114
Gloucester (GL) (rough estimate: 271 tests, 95% interval 30.0–41.3%)35.4% fail first time30.42024271
Stoke-on-Trent (ST) (rough estimate: 105 tests, 95% interval 26.8–44.8%)35.2% fail first time30.42024105
London SE (SE) (rough estimate: 111 tests, 95% interval 26.9–44.4%)35.1% fail first time30.42024111
Ipswich (IP) (rough estimate: 149 tests, 95% interval 27.7–42.8%)34.9% fail first time30.42024149
Nottingham (NG) (rough estimate: 241 tests, 95% interval 29.1–41.1%)34.9% fail first time30.42024241
Peterborough (PE) (rough estimate: 259 tests, 95% interval 29.2–40.7%)34.8% fail first time30.42024259
Canterbury (CT) (rough estimate: 101 tests, 95% interval 26.1–44.3%)34.6% fail first time30.42024101
Northampton (NN) (rough estimate: 169 tests, 95% interval 27.6–41.8%)34.3% fail first time30.42024169
Exeter (EX) (rough estimate: 200 tests, 95% interval 27.8–40.8%)34% fail first time30.42024200
Cardiff (CF) (rough estimate: 127 tests, 95% interval 26.2–42.5%)33.9% fail first time30.42024127
Bath (BA) (rough estimate: 137 tests, 95% interval 26.2–41.8%)33.6% fail first time30.42024137
Watford (WD) (rough estimate: 103 tests, 95% interval 24.7–42.6%)33.0% fail first time30.42024103
Tonbridge (TN) (rough estimate: 182 tests, 95% interval 26.0–39.5%)32.4% fail first time30.42024182
Birmingham (B) (rough estimate: 409 tests, 95% interval 27.9–36.9%)32.3% fail first time30.42024409
Hemel Hempstead (HP) (rough estimate: 121 tests, 95% interval 24.6–41.0%)32.2% fail first time30.42024121
Truro (TR) (rough estimate: 146 tests, 95% interval 25.2–40.1%)32.2% fail first time30.42024146
Sheffield (S) (rough estimate: 230 tests, 95% interval 26.5–38.5%)32.2% fail first time30.42024230
Chester (CH) (rough estimate: 117 tests, 95% interval 23.9–40.5%)31.6% fail first time30.42024117
Newcastle (NE) (rough estimate: 130 tests, 95% interval 24.2–40.0%)31.5% fail first time30.42024130
Coventry (CV) (rough estimate: 159 tests, 95% interval 24.7–39.0%)31.4% fail first time30.42024159
Lincoln (LN) (rough estimate: 121 tests, 95% interval 23.8–40.1%)31.4% fail first time30.42024121
Glasgow (G) (rough estimate: 103 tests, 95% interval 22.9–40.6%)31.1% fail first time30.42024103
Oxford (OX) (rough estimate: 117 tests, 95% interval 23.1–39.6%)30.8% fail first time30.42024117
Southend-on-Sea (SS) (rough estimate: 114 tests, 95% interval 23.0–39.7%)30.7% fail first time30.42024114
Swindon (SN) (rough estimate: 121 tests, 95% interval 23.1–39.3%)30.6% fail first time30.42024121
Cambridge (CB) (rough estimate: 136 tests, 95% interval 23.1–38.3%)30.1% fail first time30.42024136
Edinburgh (EH) (rough estimate: 178 tests, 95% interval 23.5–36.9%)29.8% fail first time30.42024178
Milton Keynes (MK) (rough estimate: 162 tests, 95% interval 23.1–37.1%)29.6% fail first time30.42024162
Cleveland (TS) (rough estimate: 112 tests, 95% interval 21.8–38.5%)29.5% fail first time30.42024112
Redhill (RH) (rough estimate: 137 tests, 95% interval 22.2–37.3%)29.2% fail first time30.42024137
Norwich (NR) (rough estimate: 213 tests, 95% interval 23.4–35.5%)29.1% fail first time30.42024213
Leicester (LE) (rough estimate: 164 tests, 95% interval 21.7–35.4%)28.1% fail first time30.42024164
Chelmsford (CM) (rough estimate: 149 tests, 95% interval 20.4–34.5%)26.9% fail first time30.42024149
Derby (DE) (rough estimate: 145 tests, 95% interval 19.7–33.9%)26.2% fail first time30.42024145
Reading (RG) (rough estimate: 216 tests, 95% interval 18.9–30.2%)24.1% fail first time30.42024216
Croydon (CR) (rough estimate: 104 tests, 95% interval 15.2–31.0%)22.1% fail first time30.42024104

Source: DVSA MOT bulk data · Window: 2024 · n = 1,584 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV

Does a Smart Roadster rust more than average?

Allowing for age, Smart Roadster MOTs record corrosion failures at 2.4 times the national rate: 1.84% of tests against 0.77% (2024 + geographic layers, n = 1,581).

Computed, not measured.

slope · Smart Roadster · Salt belt susceptibility · 2.4 vs 1 · 2024 + geographic layers
Salt belt susceptibility: 1 vs 2.4. DVSA MOT bulk data, 24 Sep 2026.
Smart Roadster: the numbers behind this answer (2024 + geographic layers)
MeasureValueUnitCompared withYearsTests
Salt belt susceptibility2.4ratio estimate12024 + geographic layers1581

Source: DVSA MOT bulk data · Window: 2024 + geographic layers · n = 1,584 (initial tests) · Method: computed estimate, not measured · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV

Is a Smart Roadster ULEZ compliant?

An estimated 12.4% of Smart Roadsters 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 · Smart Roadster · Likely compliant · 12.4 vs baseline · 2024
DVSA MOT bulk data, 24 Sep 2026.
Smart Roadster: the numbers behind this answer (2024)
MeasureValueUnitCompared withYearsTests
Likely compliant12.4% estimate20241584

Source: DVSA MOT bulk data · Window: 2024 · n = 1,584 (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 Smart Roadster?

Of failed Smart Roadster MOTs, 29.3% were retested the same day and a further 64.0% within 10 days; the median failed car passed its retest after 2 days (2019–2024, n = 2,724).

bar · Smart Roadster · Same-day retest · 29.3 vs failed initial tests · 2019–2024
DVSA MOT bulk data, 24 Sep 2026.
Smart Roadster: the numbers behind this answer (2019–2024)
MeasureValueUnitCompared withYearsTests
Same-day retest29.3%failed initial tests2019–20242724
Retest within 10 days64.0%failed initial tests2019–20242724
Clean MOT streak29.7%observed chains2019–20242178
Repeat advisory41.2%observed chains2019–20242178
Decreasing odometer2.1% mileage anomalyobserved chains2019–20242460

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 1,584 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV

Is low mileage better for a Smart Roadster?

Smart Roadsters aged 14 to 14 doing under 5,000 miles a year failed first time in 32.0% of tests, against 44.8% for those doing 8,000 to 12,000 miles (2019–2024, n = 453).

bullet · Smart Roadster · Low-use first-time failure · 32.0 vs 44.8 · 2019–2024
Low-use first-time failure: 32 vs 44.8. DVSA MOT bulk data, 24 Sep 2026.
Smart Roadster: the numbers behind this answer (2019–2024)
MeasureValueUnitCompared withYearsTests
Low-use first-time failure32.0%44.82019–2024453
Low-use gap-12.8percentage points8–12k miles2019–2024453

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 1,584 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV

If a Smart Roadster fails, does it fail again?

32.5% of Smart Roadsters that failed an MOT failed the next one too, against 25.5% after a pass (2019–2024, n = 837). The failure most likely to come back is steering: 38.8% of those fails recurred at the next MOT.

bullet · Smart Roadster · Repeat after fail · 32.5 vs 25.5 · 2019–2024
Repeat after fail: 32.5 vs 25.5. DVSA MOT bulk data, 24 Sep 2026.
Smart Roadster: the numbers behind this answer (2019–2024)
MeasureValueUnitCompared withYearsTests
Repeat after fail32.5%25.52019–2024837

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 1,584 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV

Which Smart Roadster faults come together?

On Smart Roadsters, ‘body, chassis, structure’ and seat belts and supplementary restraint systems failures turn up together 4.6 times as often as chance would predict (2024, n = 31).

Smart Roadster: the numbers behind this answer (2024)
MeasureValueUnitCompared withYearsTests
Body, chassis, structure + Seat belts and supplementary restraint systems (rough estimate: 31 tests, 95% interval 3.1–6.5)4.6liftexpected joint rate202431
Brakes + Identification of the vehicle (rough estimate: 23 tests, 95% interval 2.8–6.6)4.4liftexpected joint rate202423
Steering + Suspension (rough estimate: 251 tests, 95% interval 3.5–4.5)4.0liftexpected joint rate2024251
Brakes + Seat belts and supplementary restraint systems (rough estimate: 75 tests, 95% interval 3.0–4.8)3.8liftexpected joint rate202475
Body, chassis, structure + Noise, emissions and leaks (rough estimate: 42 tests, 95% interval 2.6–4.9)3.6liftexpected joint rate202442
Seat belts and supplementary restraint systems + Tyres (rough estimate: 28 tests, 95% interval 2.4–5.2)3.6liftexpected joint rate202428
Identification of the vehicle + Suspension (rough estimate: 20 tests, 95% interval 2.2–5.5)3.6liftexpected joint rate202420
Body, chassis, structure + Tyres (rough estimate: 58 tests, 95% interval 2.7–4.6)3.6liftexpected joint rate202458
Full table
Further values · 2024
MeasureValueUnitCompared withYearsTests
Brakes + Noise, emissions and leaks (rough estimate: 107 tests, 95% interval 2.6–3.9)3.2liftexpected joint rate2024107
Lamps, reflectors and electrical equipment + Seat belts and supplementary restraint systems (rough estimate: 119 tests, 95% interval 2.6–3.8)3.2liftexpected joint rate2024119
Identification of the vehicle + Lamps, reflectors and electrical equipment (rough estimate: 32 tests, 95% interval 2.2–4.5)3.2liftexpected joint rate202432
Body, chassis, structure + Brakes (rough estimate: 128 tests, 95% interval 2.6–3.7)3.1liftexpected joint rate2024128
Seat belts and supplementary restraint systems + Suspension (rough estimate: 64 tests, 95% interval 2.4–4.0)3.1liftexpected joint rate202464
Seat belts and supplementary restraint systems + Visibility (rough estimate: 40 tests, 95% interval 2.2–4.2)3.1liftexpected joint rate202440
Brakes + Tyres (rough estimate: 141 tests, 95% interval 2.5–3.6)3.0liftexpected joint rate2024141
Lamps, reflectors and electrical equipment + Road Wheels (rough estimate: 25 tests, 95% interval 1.9–4.3)2.9liftexpected joint rate202425
Tyres + Visibility (rough estimate: 91 tests, 95% interval 2.3–3.6)2.9liftexpected joint rate202491
Brakes + Suspension (rough estimate: 360 tests, 95% interval 2.6–3.2)2.9liftexpected joint rate2024360
Body, chassis, structure + Visibility (rough estimate: 79 tests, 95% interval 2.3–3.6)2.9liftexpected joint rate202479
Brakes + Lamps, reflectors and electrical equipment2.8liftexpected joint rate2024636
Body, chassis, structure + Lamps, reflectors and electrical equipment (rough estimate: 219 tests, 95% interval 2.5–3.2)2.8liftexpected joint rate2024219
Noise, emissions and leaks + Tyres (rough estimate: 37 tests, 95% interval 2.0–3.9)2.8liftexpected joint rate202437
Lamps, reflectors and electrical equipment + Tyres (rough estimate: 241 tests, 95% interval 2.4–3.1)2.7liftexpected joint rate2024241
Body, chassis, structure + Steering (rough estimate: 56 tests, 95% interval 2.0–3.5)2.7liftexpected joint rate202456
Lamps, reflectors and electrical equipment + Noise, emissions and leaks (rough estimate: 168 tests, 95% interval 2.3–3.1)2.6liftexpected joint rate2024168
Lamps, reflectors and electrical equipment + Visibility (rough estimate: 391 tests, 95% interval 2.4–2.9)2.6liftexpected joint rate2024391
Suspension + Tyres (rough estimate: 128 tests, 95% interval 2.2–3.1)2.6liftexpected joint rate2024128
Noise, emissions and leaks + Visibility (rough estimate: 57 tests, 95% interval 1.9–3.3)2.6liftexpected joint rate202457
Brakes + Visibility (rough estimate: 199 tests, 95% interval 2.2–2.9)2.5liftexpected joint rate2024199
Lamps, reflectors and electrical equipment + Suspension2.5liftexpected joint rate2024592
Body, chassis, structure + Suspension (rough estimate: 107 tests, 95% interval 2.0–3.0)2.5liftexpected joint rate2024107
Brakes + Steering (rough estimate: 145 tests, 95% interval 2.1–2.9)2.4liftexpected joint rate2024145
Noise, emissions and leaks + Suspension (rough estimate: 85 tests, 95% interval 1.9–3.0)2.4liftexpected joint rate202485
Seat belts and supplementary restraint systems + Steering (rough estimate: 23 tests, 95% interval 1.5–3.5)2.3liftexpected joint rate202423
Suspension + Visibility (rough estimate: 194 tests, 95% interval 2.0–2.7)2.3liftexpected joint rate2024194
Steering + Visibility (rough estimate: 91 tests, 95% interval 1.8–2.8)2.3liftexpected joint rate202491
Lamps, reflectors and electrical equipment + Steering (rough estimate: 256 tests, 95% interval 2.0–2.5)2.3liftexpected joint rate2024256
Steering + Tyres (rough estimate: 52 tests, 95% interval 1.6–2.9)2.2liftexpected joint rate202452
Noise, emissions and leaks + Steering (rough estimate: 36 tests, 95% interval 1.5–3.0)2.1liftexpected joint rate202436
Noise, emissions and leaks + Seat belts and supplementary restraint systems (seen together; too few for a multiplier)16tests with both202416
Road Wheels + Suspension (seen together; too few for a multiplier)14tests with both202414
Brakes + Road Wheels (seen together; too few for a multiplier)12tests with both202412
Identification of the vehicle + Tyres (seen together; too few for a multiplier)11tests with both202411
Body, chassis, structure + Road Wheels (seen together; too few for a multiplier)9tests with both20249
Road Wheels + Tyres (seen together; too few for a multiplier)9tests with both20249
Road Wheels + Visibility (seen together; too few for a multiplier)9tests with both20249
Identification of the vehicle + Visibility (seen together; too few for a multiplier)8tests with both20248
Identification of the vehicle + Noise, emissions and leaks (seen together; too few for a multiplier)6tests with both20246
Body, chassis, structure + Identification of the vehicle (seen together; too few for a multiplier)6tests with both20246
Brakes + Speedometer and speed limiter (seen together; too few for a multiplier)5tests with both20245
Lamps, reflectors and electrical equipment + Speedometer and speed limiter (seen together; too few for a multiplier)5tests with both20245
Road Wheels + Steering (seen together; too few for a multiplier)5tests with both20245

Source: DVSA MOT bulk data · Window: 2024 · n = 1,584 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV

What does a Smart Roadster cost to run in a fleet?

Of every 100 Smart Roadsters tested at age 18, about 33 failed the MOT first time (rough estimate); at age 19, about 27 (rough estimate). These are one-year rates for different cars tested in the same year, not a fleet followed over time (2024).

Smart Roadster: the numbers behind this answer (2024)
MeasureValueUnitCompared withYearsTests
Age 18 (rough estimate: 150 tests, 95% interval 25.7–40.5%)32.7% fail first time2024150
Age 19 (rough estimate: 397 tests, 95% interval 22.8–31.5%)26.9% fail first time2024397

Source: DVSA MOT bulk data · Window: 2024 · n = 1,584 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV

Does the Smart Roadster fail inspections in other countries too?

In the Netherlands, 53.4% of Smart Roadsters failed their periodic roadworthiness inspection, against 50.8% for all cars there (2024 by country, n = 903 inspections).

Both readings are shown: this comparison changes when usage or inspection rules differ.

Inspections abroad disagree: none point the same way as Britain, the Netherlands do not. Test rules, climate and how the vehicles are used differ, so both readings are shown.

bullet · Smart Roadster · Netherlands · 53.4 vs 50.8 · 2024 by country
Netherlands: 53.4 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.
Smart Roadster: the numbers behind this answer (2024 by country)
MeasureValueUnitCompared withYearsTests
Netherlands53.4% failed50.82024 by country903

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 = 1,584 (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 Smart Roadster MOT matter?

Smart Roadsters fail first time most in April (35.6%, against 29.8% for all cars that month) and least in March (29.3%) (2024, n = 1,584).

line · Smart Roadster · January · 34.9 vs 31.1 · 2024
January: 34.9. December: 31.8. DVSA MOT bulk data, 24 Sep 2026.
Smart Roadster: the numbers behind this answer (2024)
MeasureValueUnitCompared withYearsTests
January34.9% fail first time31.12024808
February35.5% fail first time30.02024710
March29.3% fail first time28.320241060
April35.6% fail first time29.82024874
May33.6% fail first time28.820241047
June30.8% fail first time28.120241096
July31.6% fail first time29.320241182
August34% fail first time29.220241103
Full table
Further values · 2024
MeasureValueUnitCompared withYearsTests
September30.8% fail first time28.220241220
October30.7% fail first time30.320241197
November35.4% fail first time30.62024997
December31.8% fail first time29.32024683

Source: DVSA MOT bulk data · Window: 2024 · n = 1,584 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV

Not enough tests for… (and why)

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

not computed for this model: no qualifying records. 1,584 initial Smart Roadster tests are in the published model cohort.

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 1,584 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV

See the Mitsubishi Mirage, a car of the same inspection class with 7.1× the tests · Check your car by registration

What have dealers been told about the Smart Roadster? (US market)

layer not yet computed for this model (covers 211 of 761 models). 1,584 initial Smart Roadster tests are in the published model cohort.

Source: NHTSA, US market; covers 211 of 761 models · Window: NHTSA · n = 1,584 (initial tests) · Method: one initial test per test_id · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV

See the Mitsubishi Mirage, a car of the same inspection class with 7.1× the tests · Check your car by registration

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

layer not yet computed for this model (covers 19 of 761 models). 1,584 initial Smart Roadster tests are in the published model cohort.

Source: European Commission OBFCM; covers 19 of 761 models · Window: 2021+ cohorts · n = 1,584 (initial tests) · Method: computed estimate, not measured · Updated: 24 Sep 2026 · Release: dvsa-2024-v2 · CSV

See the Mitsubishi Mirage, a car of the same inspection class with 7.1× the tests · Check your car by registration

How to cite this page

MOT Risk Index (2026). Smart Roadster 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/smart-roadster-review-389672ba/

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

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Smart Roadster MOT: quick answers

What is the Smart Roadster first-time MOT pass rate?

69.6% of first attempts passed in 2024 (1,584 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 1,584 primary tests: 30.37% failed first time and 74.6% passed when cars fixed at the test centre (PRS) count as passes. The age-adjusted MOT Risk Index 72.3 is shown separately.