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
Measure
Value
Unit
Compared with
Years
Tests
MOT pass rate
74.6
%
incl. 5.0% fixed at the test centre
2024
1584
Passed at the first attempt
69.6
%
all first tests
2024
1584
MOT Risk Index (95% CI 67.1–77.8)
72.3
index
100 = normal for its age · rank 194 (tied) of 761 (1 = fails least for its age)
2024
1584
Biggest excess: Steering
6.9
per 100
6.2 same-age
2019–2024
11977
Dangerous defects
7.4
per 100
11.2 UK, not age-adjusted
2019–2024
11977
Advisory items
174.4
per 100
127.1 UK, not age-adjusted
2019–2024
11977
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.
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).
DVSA MOT bulk data, 24 Sep 2026.
Smart Roadster: the numbers behind this answer (2019–2024)
Measure
Value
Unit
Compared with
Years
Tests
Lamps, reflectors and electrical equipment
34
per 100
39.8
2019–2024
4067
Brakes
18.2
per 100
24.2
2019–2024
2174
Suspension
15.4
per 100
32.3
2019–2024
1850
Visibility
8.3
per 100
12.8
2019–2024
989
Steering
6.9
per 100
6.2
2019–2024
827
Tyres
5.8
per 100
10.5
2019–2024
700
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.
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)
Measure
Value
Unit
Compared with
Years
Tests
Lamps, reflectors and electrical equipment
23.8
% next fail
median model
2019–2024
720
Suspension
14.5
% next fail
median model
2019–2024
2032
Brakes
13.7
% next fail
median model
2019–2024
2937
Tyres
8.5
% next fail
median model
2019–2024
1498
Noise, emissions and leaks
3.2
% next fail
median model
2019–2024
842
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).
DVSA MOT bulk data, 24 Sep 2026.
Smart Roadster: the numbers behind this answer (2019–2024)
Measure
Value
Unit
Compared with
Years
Tests
Brakes
62.4
per 100
34.7
2019–2024
7472
Suspension
44.4
per 100
26.2
2019–2024
5321
Tyres
28.6
per 100
39.7
2019–2024
3420
Lamps, reflectors and electrical equipment
12.5
per 100
2.8
2019–2024
1497
Noise, emissions and leaks
10.1
per 100
5.2
2019–2024
1210
Road Wheels
4.4
per 100
1
2019–2024
527
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).
DVSA MOT bulk data, 24 Sep 2026.
Smart Roadster: the numbers behind this answer (2019–2024)
Measure
Value
Unit
Compared with
Years
Tests
Lamps, reflectors and electrical equipment, 12 to 14 years old, after a pass
9.7
% next fail
2019–2024
745
Brakes, 12 to 14 years old, after a pass
5.1
% next fail
2019–2024
745
Suspension, 12 to 14 years old, after a pass
5.1
% next fail
2019–2024
745
Visibility, 12 to 14 years old, after a pass
3.6
% next fail
2019–2024
745
Steering, 12 to 14 years old, after a pass
2.3
% next fail
2019–2024
745
Noise, emissions and leaks, 12 to 14 years old, after a pass
1.9
% next fail
2019–2024
745
Body, chassis, structure, 12 to 14 years old, after a pass
1.7
% next fail
2019–2024
745
Seat belts and supplementary restraint systems, 12 to 14 years old, after a pass
0.8
% next fail
2019–2024
745
Full table
Further values · 2019–2024
Measure
Value
Unit
Compared with
Years
Tests
Tyres, 12 to 14 years old, after a pass
0.7
% next fail
2019–2024
745
Lamps, reflectors and electrical equipment, 12 to 14 years old, after an advisory
22.2
% next fail
2019–2024
544
Suspension, 12 to 14 years old, after an advisory
11.9
% next fail
2019–2024
544
Brakes, 12 to 14 years old, after an advisory
9.7
% next fail
2019–2024
544
Visibility, 12 to 14 years old, after an advisory
8.8
% next fail
2019–2024
544
Tyres, 12 to 14 years old, after an advisory
5.9
% next fail
2019–2024
544
Steering, 12 to 14 years old, after an advisory
4.6
% next fail
2019–2024
544
Body, chassis, structure, 12 to 14 years old, after an advisory
3.3
% next fail
2019–2024
544
Noise, emissions and leaks, 12 to 14 years old, after an advisory
2.2
% next fail
2019–2024
544
Seat belts and supplementary restraint systems, 12 to 14 years old, after an advisory
0.9
% next fail
2019–2024
544
Lamps, reflectors and electrical equipment, 12 to 14 years old, after a fail
25.1
% next fail
2019–2024
654
Brakes, 12 to 14 years old, after a fail
16.4
% next fail
2019–2024
654
Suspension, 12 to 14 years old, after a fail
13.5
% next fail
2019–2024
654
Visibility, 12 to 14 years old, after a fail
10.2
% next fail
2019–2024
654
Steering, 12 to 14 years old, after a fail
7.8
% next fail
2019–2024
654
Tyres, 12 to 14 years old, after a fail
6.1
% next fail
2019–2024
654
Body, chassis, structure, 12 to 14 years old, after a fail
5.2
% next fail
2019–2024
654
Noise, emissions and leaks, 12 to 14 years old, after a fail
2.8
% next fail
2019–2024
654
Seat belts and supplementary restraint systems, 12 to 14 years old, after a fail
2.0
% next fail
2019–2024
654
Identification of the vehicle, 12 to 14 years old, after a fail
0.8
% next fail
2019–2024
654
Lamps, reflectors and electrical equipment, 15 to 19 years old, after a pass
12.0
% next fail
2019–2024
2507
Brakes, 15 to 19 years old, after a pass
5.7
% next fail
2019–2024
2507
Suspension, 15 to 19 years old, after a pass
5.7
% next fail
2019–2024
2507
Visibility, 15 to 19 years old, after a pass
3.4
% next fail
2019–2024
2507
Steering, 15 to 19 years old, after a pass
3.1
% next fail
2019–2024
2507
Tyres, 15 to 19 years old, after a pass
2.2
% next fail
2019–2024
2507
Body, chassis, structure, 15 to 19 years old, after a pass
2.0
% next fail
2019–2024
2507
Noise, emissions and leaks, 15 to 19 years old, after a pass
1.9
% next fail
2019–2024
2507
Seat belts and supplementary restraint systems, 15 to 19 years old, after a pass
1.2
% next fail
2019–2024
2507
Identification of the vehicle, 15 to 19 years old, after a pass
0.3
% next fail
2019–2024
2507
Lamps, reflectors and electrical equipment, 15 to 19 years old, after an advisory
18.5
% next fail
2019–2024
2395
Suspension, 15 to 19 years old, after an advisory
11.7
% next fail
2019–2024
2395
Brakes, 15 to 19 years old, after an advisory
8.9
% next fail
2019–2024
2395
Visibility, 15 to 19 years old, after an advisory
7.1
% next fail
2019–2024
2395
Steering, 15 to 19 years old, after an advisory
5.5
% next fail
2019–2024
2395
Tyres, 15 to 19 years old, after an advisory
3.5
% next fail
2019–2024
2395
Body, chassis, structure, 15 to 19 years old, after an advisory
2.9
% next fail
2019–2024
2395
Noise, emissions and leaks, 15 to 19 years old, after an advisory
2.8
% next fail
2019–2024
2395
Seat belts and supplementary restraint systems, 15 to 19 years old, after an advisory
1.2
% next fail
2019–2024
2395
Road wheels, 15 to 19 years old, after an advisory
0.3
% next fail
2019–2024
2395
Identification of the vehicle, 15 to 19 years old, after an advisory
0.2
% next fail
2019–2024
2395
Lamps, reflectors and electrical equipment, 15 to 19 years old, after a fail
24.3
% next fail
2019–2024
2296
Suspension, 15 to 19 years old, after a fail
13.7
% next fail
2019–2024
2296
Brakes, 15 to 19 years old, after a fail
12.1
% next fail
2019–2024
2296
Visibility, 15 to 19 years old, after a fail
7.7
% next fail
2019–2024
2296
Steering, 15 to 19 years old, after a fail
5.9
% next fail
2019–2024
2296
Tyres, 15 to 19 years old, after a fail
5.2
% next fail
2019–2024
2296
Body, chassis, structure, 15 to 19 years old, after a fail
4.0
% next fail
2019–2024
2296
Noise, emissions and leaks, 15 to 19 years old, after a fail
3.7
% next fail
2019–2024
2296
Seat belts and supplementary restraint systems, 15 to 19 years old, after a fail
2.2
% next fail
2019–2024
2296
Road wheels, 15 to 19 years old, after a fail
0.7
% next fail
2019–2024
2296
Identification of the vehicle, 15 to 19 years old, after a fail
0.6
% next fail
2019–2024
2296
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).
Dangerous defects: 7.4 vs 11.2. DVSA MOT bulk data, 24 Sep 2026.
Smart Roadster: the numbers behind this answer (2019–2024)
Measure
Value
Unit
Compared with
Years
Tests
Dangerous defects
7.4
per 100
11.2
2019–2024
11977
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).
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)
Measure
Value
Unit
Compared with
Years
Tests
Age 17 (rough estimate: 46 tests, 95% interval 24.5–51.4%)
37.0
% failed first time
43.1
2024
46
Age 18 (rough estimate: 150 tests, 95% interval 25.7–40.5%)
32.7
% failed first time
43.9
2024
150
Age 19 (rough estimate: 397 tests, 95% interval 22.8–31.5%)
27.0
% failed first time
43.5
2024
397
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).
Age 13: 30.7. Age 20: 32.0. DVSA MOT bulk data, 24 Sep 2026.
Smart Roadster: the numbers behind this answer (2024)
Measure
Value
Unit
Compared with
Years
Tests
Age 13
30.7
% fail
43.3
2024
270
Age 14
34.7
% fail
45.9
2024
839
Age 15
33.5
% fail
48.0
2024
1991
Age 16
34.7
% fail
50.0
2024
2117
Age 17
32.2
% fail
50.6
2024
2019
Age 18
31.5
% fail
51.0
2024
1841
Age 19
30.6
% fail
50.5
2024
1570
Age 20
32.0
% fail
49.7
2024
1017
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.
DVSA MOT bulk data, 24 Sep 2026.
Smart Roadster: the numbers behind this answer (2019–2024)
Measure
Value
Unit
Compared with
Years
Tests
Build year 2003 (worse for its age) (rough estimate: 1,568 tests, 95% interval 101.4–119.8)
110.6
index vs own age
100 = normal
2019–2024
1568
Build year 2004
101.8
index vs own age
100 = normal
2019–2024
5781
Build year 2005 (better for its age) (rough estimate: 2,963 tests, 95% interval 86.5–98.5)
92.5
index vs own age
100 = normal
2019–2024
2963
Build year 2006 (rough estimate: 877 tests, 95% interval 88.9–112.1)
100.5
index vs own age
100 = normal
2019–2024
877
Build year 2007 (rough estimate: 203 tests, 95% interval 65.8–110.9)
88.3
index vs own age
100 = normal
2019–2024
203
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.
DVSA MOT bulk data, 24 Sep 2026.
Smart Roadster: the numbers behind this answer (price catalogue)
Measure
Value
Unit
Compared with
Years
Tests
Expected repair bill
107.8
GBP estimate
modal price catalogue
price catalogue
1584
Estimated range lower
107.8
GBP estimate
modal price catalogue
price catalogue
1584
Estimated range upper
204.9
GBP estimate
modal price catalogue
price catalogue
1584
Lamps, reflectors and electrical equipment: Battery replacement (standard 12V lead-acid)
47.6
GBP expected contribution
140
price catalogue
1584
Suspension: Suspension coil spring (single corner)
27.7
GBP expected contribution
180
price catalogue
1584
Brakes: Front brake pads (parts + labour, typical hatchback)
27.3
GBP expected contribution
150
price catalogue
1584
Tyres: Tyre (single mid-range 16" fitted)
5.2
GBP expected contribution
90
price catalogue
1584
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).
DVSA MOT bulk data, 24 Sep 2026.
Smart Roadster: the numbers behind this answer (2024)
Measure
Value
Unit
Compared with
Years
Tests
Smart Roadster (this model)
72.3
index
100 = normal
2024
1584
Nissan Figaro
92.7
index
72.3
2024
2413
Mitsubishi Mirage
79
index
72.3
2024
11282
BMW i3
72.5
index
72.3
2024
23610
Smart City-Coupe
98.6
index
72.3
2024
4878
Suzuki Celerio
70
index
72.3
2024
27563
Toyota iQ
64
index
72.3
2024
16909
Renault Wind
102.4
index
72.3
2024
2065
Full table
Further values · 2024
Measure
Value
Unit
Compared with
Years
Tests
SEAT Arosa
103
index
72.3
2024
2025
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).
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)
Measure
Value
Unit
Compared with
Years
Tests
Age 17 median (rough estimate)
61836
miles
2024
46
Age 18 median (rough estimate)
73476
miles
2024
150
Age 18 P25 (rough estimate)
53081
miles
2024
150
Age 18 P75 (rough estimate)
91300
miles
2024
150
Age 19 median (rough estimate)
72235
miles
2024
397
Age 19 P25 (rough estimate)
52733
miles
2024
397
Age 19 P75 (rough estimate)
96475
miles
2024
397
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.
DVSA MOT bulk data, 24 Sep 2026.
Smart Roadster: the numbers behind this answer (2024)
Measure
Value
Unit
Compared with
Years
Tests
Age 15+, <40k miles (rough estimate: 172 tests, 95% interval 13.5–25.1%)
18.6
% failed first time
2024
172
Age 15+, 40-70k miles (rough estimate: 463 tests, 95% interval 25–33.2%)
28.9
% failed first time
2024
463
Age 15+, 70-100k miles
33.6
% failed first time
2024
539
Age 15+, 100-140k miles (rough estimate: 326 tests, 95% interval 27.7–37.8%)
32.5
% failed first time
2024
326
Age 15+, 140k+ miles (rough estimate: 71 tests, 95% interval 25.1–46.8%)
35.2
% failed first time
2024
71
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).
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)
Measure
Value
Unit
Compared with
Years
Tests
100,000 miles
22.4
% of tested cars
2024
2661
150,000 miles (rough estimate: 261 tests, 95% interval 1.9–2.5%)
2.2
% of tested cars
2024
261
200,000 miles (rough estimate: 30 tests, 95% interval 0.2–0.4%)
0.3
% of tested cars
2024
30
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).
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)
Measure
Value
Unit
Compared with
Years
Tests
Age and mileage adjusted index
78.6
index
73
2019–2024
1584
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).
DVSA MOT bulk data, 24 Sep 2026.
Smart Roadster: the numbers behind this answer (2024)
Measure
Value
Unit
Compared with
Years
Tests
Petrol
30.4
% fail first time
other fuels
2024
1583
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).
DVSA MOT bulk data, 24 Sep 2026.
Smart Roadster: the numbers behind this answer (2024)
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.
Salt belt susceptibility: 1 vs 2.4. DVSA MOT bulk data, 24 Sep 2026.
Smart Roadster: the numbers behind this answer (2024 + geographic layers)
Measure
Value
Unit
Compared with
Years
Tests
Salt belt susceptibility
2.4
ratio estimate
1
2024 + geographic layers
1581
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.
DVSA MOT bulk data, 24 Sep 2026.
Smart Roadster: the numbers behind this answer (2024)
Measure
Value
Unit
Compared with
Years
Tests
Likely compliant
12.4
% estimate
2024
1584
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).
DVSA MOT bulk data, 24 Sep 2026.
Smart Roadster: the numbers behind this answer (2019–2024)
Measure
Value
Unit
Compared with
Years
Tests
Same-day retest
29.3
%
failed initial tests
2019–2024
2724
Retest within 10 days
64.0
%
failed initial tests
2019–2024
2724
Clean MOT streak
29.7
%
observed chains
2019–2024
2178
Repeat advisory
41.2
%
observed chains
2019–2024
2178
Decreasing odometer
2.1
% mileage anomaly
observed chains
2019–2024
2460
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).
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)
Measure
Value
Unit
Compared with
Years
Tests
Low-use first-time failure
32.0
%
44.8
2019–2024
453
Low-use gap
-12.8
percentage points
8–12k miles
2019–2024
453
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.
Repeat after fail: 32.5 vs 25.5. DVSA MOT bulk data, 24 Sep 2026.
Smart Roadster: the numbers behind this answer (2019–2024)
Measure
Value
Unit
Compared with
Years
Tests
Repeat after fail
32.5
%
25.5
2019–2024
837
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)
Measure
Value
Unit
Compared with
Years
Tests
Body, chassis, structure + Seat belts and supplementary restraint systems (rough estimate: 31 tests, 95% interval 3.1–6.5)
4.6
lift
expected joint rate
2024
31
Brakes + Identification of the vehicle (rough estimate: 23 tests, 95% interval 2.8–6.6)
Noise, emissions and leaks + Seat belts and supplementary restraint systems (seen together; too few for a multiplier)
16
tests with both
2024
16
Road Wheels + Suspension (seen together; too few for a multiplier)
14
tests with both
2024
14
Brakes + Road Wheels (seen together; too few for a multiplier)
12
tests with both
2024
12
Identification of the vehicle + Tyres (seen together; too few for a multiplier)
11
tests with both
2024
11
Body, chassis, structure + Road Wheels (seen together; too few for a multiplier)
9
tests with both
2024
9
Road Wheels + Tyres (seen together; too few for a multiplier)
9
tests with both
2024
9
Road Wheels + Visibility (seen together; too few for a multiplier)
9
tests with both
2024
9
Identification of the vehicle + Visibility (seen together; too few for a multiplier)
8
tests with both
2024
8
Identification of the vehicle + Noise, emissions and leaks (seen together; too few for a multiplier)
6
tests with both
2024
6
Body, chassis, structure + Identification of the vehicle (seen together; too few for a multiplier)
6
tests with both
2024
6
Brakes + Speedometer and speed limiter (seen together; too few for a multiplier)
5
tests with both
2024
5
Lamps, reflectors and electrical equipment + Speedometer and speed limiter (seen together; too few for a multiplier)
5
tests with both
2024
5
Road Wheels + Steering (seen together; too few for a multiplier)
5
tests with both
2024
5
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)
Measure
Value
Unit
Compared with
Years
Tests
Age 18 (rough estimate: 150 tests, 95% interval 25.7–40.5%)
32.7
% fail first time
2024
150
Age 19 (rough estimate: 397 tests, 95% interval 22.8–31.5%)
26.9
% fail first time
2024
397
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.
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)
Measure
Value
Unit
Compared with
Years
Tests
Netherlands
53.4
% failed
50.8
2024 by country
903
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).
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.