The top 10 in this list, model by model
1 · 30% fewer MOT fails
Volkswagen T-Roc
Why it ranks here: 30% fewer MOT fails than cars the same age and mileage (ratio 0.70, 95% CI 0.69–0.71), from 259,429 MOT tests at 3 to 7 years. At typical mileage its rate would be about 9.2% (9.0%–9.3%), against 13.1% for all cars at the same ages; raw (its own ages and mileage) 9.1%. Rank range 1–1.
Check before you buy: fails on seat belts and airbags 1.7–1.9× as often as cars the same age (1,456 fails in 260,443 MOT tests at ages 3 to 15, not mileage-adjusted).
Suits: buyers looking at a small SUV; the ones tested were mostly petrol.
2 · 22% fewer MOT fails
Volkswagen Touareg
Why it ranks here: 22% fewer MOT fails than cars the same age and mileage (ratio 0.78, 95% CI 0.77–0.79), from 122,885 MOT tests at 3 to 15 years. At typical mileage its rate would be about 19.1% (18.9%–19.3%), against 24.6% for all cars at the same ages; raw (its own ages and mileage) 20.8%. Rank range 2–3.
Check before you buy: fails on seat belts and airbags 1.4–1.5× as often as cars the same age (1,071 fails in 124,067 MOT tests at ages 3 to 15, not mileage-adjusted); fails on number plates and VIN 1.3–1.5× as often as cars the same age (492 fails in 124,067 MOT tests at ages 3 to 15, not mileage-adjusted).
Suits: buyers looking at a large SUV; the ones tested were mostly diesel.
3 · 21% fewer MOT fails
Volkswagen Golf
Why it ranks here: 21% fewer MOT fails than cars the same age and mileage (ratio 0.79, 95% CI 0.79–0.79), from 2,847,847 MOT tests at 3 to 15 years. At typical mileage its rate would be about 20.6% (20.5%–20.6%), against 26.1% for all cars at the same ages; raw (its own ages and mileage) 21.4%. Rank range 2–3.
Check before you buy: no part fails significantly more often than on cars the same age (ages 3 to 15).
Suits: buyers looking at a family hatchback; the ones tested were 49% diesel, 49% petrol.
4 · 20% fewer MOT fails
Volkswagen Tiguan
Why it ranks here: 20% fewer MOT fails than cars the same age and mileage (ratio 0.80, 95% CI 0.79–0.80), from 884,392 MOT tests at 3 to 15 years. At typical mileage its rate would be about 16.7% (16.6%–16.7%), against 20.9% for all cars at the same ages; raw (its own ages and mileage) 17.6%. Rank range 4–4.
Check before you buy: fails on suspension 1.20–1.22× as often as cars the same age (54,869 fails in 887,958 MOT tests at ages 3 to 15, not mileage-adjusted).
Suits: buyers looking at a family SUV; the ones tested were 76% diesel, 23% petrol.
5 · About average
Volkswagen Passat
Why it ranks here: No clear difference from cars the same age and mileage by our 20% rule (ratio 0.85, 95% CI 0.84–0.85), from 646,452 MOT tests at 3 to 15 years. At typical mileage its rate would be about 23.8% (23.7%–23.8%), against 28.0% for all cars at the same ages; raw (its own ages and mileage) 26.4%. Rank range 5–6.
Check before you buy: fails on seat belts and airbags 1.9–2.0× as often as cars the same age (8,962 fails in 650,044 MOT tests at ages 3 to 15, not mileage-adjusted); fails on tyres 1.28–1.30× as often as cars the same age (55,303 fails in 650,044 MOT tests at ages 3 to 15, not mileage-adjusted).
Suits: buyers looking at an executive car; the ones tested were mostly diesel.
6 · About average
Volkswagen CC
Why it ranks here: No clear difference from cars the same age and mileage by our 20% rule (ratio 0.85, 95% CI 0.84–0.86), from 55,542 MOT tests at 6 to 13 years. At typical mileage its rate would be about 24.1% (23.7%–24.4%), against 28.3% for all cars at the same ages; raw (its own ages and mileage) 26.4%. Rank range 5–7.
Check before you buy: fails on seat belts and airbags 2.1–2.4× as often as cars the same age (771 fails in 56,184 MOT tests at ages 3 to 15, not mileage-adjusted); fails on tyres 1.37–1.44× as often as cars the same age (5,330 fails in 56,184 MOT tests at ages 3 to 15, not mileage-adjusted).
Suits: buyers looking at an executive car; the ones tested were mostly diesel.
7 · About average
Volkswagen Eos
Why it ranks here: No clear difference from cars the same age and mileage by our 20% rule (ratio 0.87, 95% CI 0.85–0.88), from 31,108 MOT tests at 10 to 15 years. At typical mileage its rate would be about 33.9% (33.3%–34.4%), against 39.1% for all cars at the same ages; raw (its own ages and mileage) 33.6%. Rank range 6–10.
Check before you buy: no part fails significantly more often than on cars the same age (ages 3 to 15).
Suits: buyers looking at a sports car; the ones tested were 55% diesel, 45% petrol.
8 · About average
Volkswagen Sharan
Why it ranks here: No clear difference from cars the same age and mileage by our 20% rule (ratio 0.89, 95% CI 0.88–0.90), from 131,288 MOT tests at 3 to 15 years. At typical mileage its rate would be about 20.1% (19.9%–20.3%), against 22.6% for all cars at the same ages; raw (its own ages and mileage) 22.4%. Rank range 7–11.
Check before you buy: fails on seat belts and airbags 1.5–1.7× as often as cars the same age (1,135 fails in 132,347 MOT tests at ages 3 to 15, not mileage-adjusted); fails on emissions and leaks 1.4–1.5× as often as cars the same age (3,801 fails in 132,347 MOT tests at ages 3 to 15, not mileage-adjusted).
Suits: buyers looking at an MPV; the ones tested were mostly diesel.
9 · About average
Volkswagen Arteon
Why it ranks here: No clear difference from cars the same age and mileage by our 20% rule (ratio 0.89, 95% CI 0.86–0.92), from 28,161 MOT tests at 3 to 7 years. At typical mileage its rate would be about 12.0% (11.7%–12.4%), against 13.6% for all cars at the same ages; raw (its own ages and mileage) 13.1%. Rank range 7–13.
Check before you buy: fails on tyres 1.5–1.6× as often as cars the same age (2,292 fails in 28,742 MOT tests at ages 3 to 15, not mileage-adjusted).
Suits: buyers looking at an executive car; the ones tested were 58% petrol, 40% diesel.
10 · About average
Volkswagen ID.3
Why it ranks here: No clear difference from cars the same age and mileage by our 20% rule (ratio 0.89, 95% CI 0.87–0.92), from 45,162 MOT tests at 3 to 5 years. At typical mileage its rate would be about 10.2% (9.9%–10.4%), against 11.4% for all cars at the same ages; raw (its own ages and mileage) 10.4%. Rank range 7–13.
Check before you buy: no part fails significantly more often than on cars the same age (ages 3 to 15).
Suits: buyers looking at a family hatchback; the ones tested were mostly electric.
How we rank
8,309,228 MOT tests from 2022–2025 of cars 3 to 15 years old. For each model and age, the tests are split into 6 mileage bands (<30k, 30-60k, 60-90k, 90-120k, 120-150k, 150k+); the expected fails are what all cars of that age would fail in the same bands, corrected to the model's own mix of test years. The ratio of the model's fails to the expected fails sets its place. The adjusted rate is that ratio times the all-car rate at the model's own ages, so it reads against that rate: a model tested only at 3 to 5 years is compared with young cars, not with this list's average.
The 95% intervals cover sampling error only (Wilson intervals). A model is called fewer or more only when its interval is at least 20% from the all-car rate, overall and at 3 or more ages ("close to average" when the interval excludes the all-car rate by less); awards use the same rule. Test years: Each model's expected fails therefore use its own mix of test years 2022–2025, age by age; the mileage bands themselves pool the four years, which can leave a small bias in favour of models first sold late in the window. Generations of a model are pooled unless the data splits them; each row says which years it covers. How we compare
Limitation: MOT tests record roadworthiness defects on the test day. They do not record breakdowns, engine or gearbox faults, or repair costs, and they cannot separate design from upkeep: a model whose owners service it before every MOT looks better here. Only cars still on the road are tested.