MOT fail rates by first-use year
2015 BMW 4 Series MOT fail rate and common faults
How BMW 4 Series cars first used in 2015 did at their MOTs from 2022 to 2025, against all cars of the same age. From 73,605 DVSA MOT tests of these cars. First use is usually the date the car was first registered.
MOT data updated
At 10 years, tested in 2025
What stands out
- In 2025, at 10 years old, BMW 4 Series cars first used in 2015 failed 19.6% of MOTs (17,983 tests), 10.7 points below the 30.3% for all cars that age.
- From 2022 to 2025, as these cars went from 7 to 10 years old, the fail rate moved from 16.2% to 19.6%.
- BMW 4 Series cars first used a year earlier, in 2014, failed 20.8% at the same age of 10 years (12,650 tests, in 2024).
- The most common fail item that is not a wear item, for the BMW 4 Series at 10 years, is shock absorber leaking, at 2.5 per 100 MOTs (all cars: 0.9).
MOT fail rate by test year
| Test year | Age | MOT fail rate | Tests (n) | All cars | Difference |
|---|---|---|---|---|---|
| 2022 | 7 years | 16.2% | 18,729 | 20.6% | −4.4 pts |
| 2023 | 8 years | 17.0% | 18,510 | 23.8% | −6.8 pts |
| 2024 | 9 years | 18.7% | 18,383 | 27.1% | −8.4 pts |
| 2025 | 10 years | 19.6% | 17,983 | 30.3% | −10.7 pts |
Most common faults at 10 years
These figures cover all BMW 4 Series MOTs at 10 years: cars first used 2013 to 2015, tested 2022 to 2025 (n=32,238). The list uses every first-use year so it has enough tests. Wear items (tyres, brake pads, wipers, bulbs) say more about upkeep than about the design.
MOT fail items
| Fail item | Per 100 MOTs | All cars |
|---|---|---|
| Shock absorber leaking | 2.5 | 0.9 |
| Tyre with cords exposed Wear | 2.4 | 1.4 |
| Tyre tread below 1.6 mm Wear | 2.4 | 2.7 |
| Tyre condition: has a bulge, caused by separation or partial failure of its structure Wear | 1.7 | 0.5 |
| Tyre condition: has a cut in excess of the requirements deep enough to reach the ply or cords Wear | 1.6 | 1.2 |
| Brake pads under 1.5 mm Wear | 1.4 | 2.1 |
| Washers: provides insufficient washer liquid Wear | 1.3 | 1.5 |
| Dipped headlight not working Wear | 1.1 | 1.7 |
| Road wheel attachment: fixing missing | 0.7 | 0.3 |
| Headlamp aim: too low Wear | 0.6 | 1.2 |
Per 100 of the MOTs above (n=32,238). A test with two items counts once for each.
Advisories
| Advisory | Per 100 MOTs | All cars |
|---|---|---|
| Tyre tread close to the legal limit or worn on the edge Wear | 17.7 | 17.0 |
| Brake discs: worn, pitted or scored, but not seriously weakened | 8.8 | 9.6 |
| Brake pads wearing thin Wear | 7.9 | 8.1 |
| Non-component advisories: Play in steering rack inner joint(s) | 6.3 | 1.3 |
| Suspension pin or bush worn, without excessive movement | 4.4 | 5.8 |
| Shock absorber misting oil | 4.2 | 3.4 |
| Brake discs: worn, but not excessively | 2.8 | 2.7 |
| Tyre condition: slightly damaged/cracking or perishing Wear | 2.8 | 8.6 |
| Tyre tread close to the legal limit, under the 1.0 mm rule Wear | 2.7 | 2.2 |
| Windscreen: damaged but not adversely affecting driver's view | 2.5 | 2.4 |
Per 100 of the MOTs above (n=32,238). A test with two items counts once for each.
Fuel type at 10 years
These figures cover all BMW 4 Series MOTs at 10 years: cars first used 2013 to 2015, tested 2022 to 2025 (n=32,238). Each fuel is set against all cars of the same fuel and age. Fuels with fewer than 1,000 tests are not shown.
| Fuel | Share of tests | MOT fail rate | Tests (n) | All cars, same fuel | Median mileage |
|---|---|---|---|---|---|
| Diesel | 73.1% | 20.9% | 23,554 | 31.4% | 90,040 miles |
| Petrol | 26.9% | 17.9% | 8,684 | 29.5% | 65,780 miles |
Fail rate by mileage at 10 years
These figures cover all BMW 4 Series MOTs at 10 years: cars first used 2013 to 2015, tested 2022 to 2025 (n=32,238). At 10 years, BMW 4 Series cars at over 150,000 miles failed more often (26.4%, n=1,237) than those at 30,000 to 60,000 miles (15.1%, n=5,915). Bands with fewer than 1,000 tests are not shown.
| Mileage at test | MOT fail rate | Tests (n) | All cars |
|---|---|---|---|
| 30,000 to 60,000 miles | 15.1% | 5,915 | 24.7% |
| 60,000 to 90,000 miles | 19.3% | 11,942 | 31.9% |
| 90,000 to 120,000 miles | 23.0% | 8,984 | 35.3% |
| 120,000 to 150,000 miles | 24.5% | 3,263 | 36.5% |
| Over 150,000 miles | 26.4% | 1,237 | 36.5% |
Car tax rules for a 2015 car
- Cars first registered from 1 March 2001 to 31 March 2017 are taxed by CO2 emissions band, from band A (the lowest emissions) to band M. The band is set by the CO2 figure on the V5C logbook.
These are the rules, not the amount for a specific car. Car tax check
ULEZ and clean air zones
- Petrol cars first registered from 2006 usually meet Euro 4, the petrol standard for the London ULEZ, so they usually do not pay the daily charge.
- Diesel cars usually meet Euro 6 when first registered from September 2015. A 2015 diesel can be on either side of that date, so the Euro standard of that car decides.
- The clean air zones in Birmingham and Bristol use the same Euro 4 petrol and Euro 6 diesel standards. The low emission zones in Scotland use them too, but enforce them with fines, not a daily charge.
The Euro standard of the car decides, not the year alone. ULEZ checker
Other years of the BMW 4 Series
Other BMW models first used in 2015
| Model | Age at test | MOT fail rate | Tests (n) | All cars |
|---|---|---|---|---|
| BMW 1 Series (2015) | 10 years in 2025 | 22.0% | 31,588 | 30.3% |
| BMW 3 Series (2015) | 10 years in 2025 | 20.2% | 31,332 | 30.3% |
| BMW 5 Series (2015) | 10 years in 2025 | 16.4% | 16,645 | 30.3% |
| BMW 2 Series (2015) | 10 years in 2025 | 21.3% | 16,692 | 30.3% |
| BMW X3 (2015) | 10 years in 2025 | 21.5% | 7,064 | 30.3% |
| BMW X5 (2015) | 10 years in 2025 | 15.2% | 6,771 | 30.3% |
| BMW X1 (2015) | 10 years in 2025 | 21.7% | 4,622 | 30.3% |
| BMW X4 (2015) | 10 years in 2025 | 21.8% | 2,083 | 30.3% |
More on the BMW 4 Series
Found one you might buy? Vet the specific car.
These figures describe 2015 BMW 4 Series cars as a group, not any one car. The VetTheCar Buying Report looks at the car you are buying: its MOT history, what similar cars did next, and what to ask the seller.
Source
Contains public sector information licensed under the Open Government Licence v3.0. Source: DVSA anonymised MOT test data, class 4 normal MOT tests, 2022 to 2025. MOT data updated 28 September 2026.
Not affiliated with or endorsed by DVSA. How we calculate these figures · Data sources
Car tax and clean air zone rules are summarised from GOV.UK and Transport for London guidance. They are general rules and are not drawn from the MOT data.