BMW 3 Series MOT pass rate & common failures
Across 46 model years and 2,987,237 tests, the BMW 3 Series passes its MOT 82.6% of the time. That is effectively the same as executive cars of a similar age (17.9% fail rate), so the MOT record here is unremarkable in either direction. Its most common failure areas are lighting & signalling, tyres and suspension.
Best and worst 3 Series years
Ranked across 3 Series years with at least 1,000 tests. Older cars fail more simply because they are older — compare years close together in age before drawing conclusions.
What the MOT record shows
The strongest year on this record is 2018 (90.2% pass rate); the weakest is 2004 (75.2%). Older cars carry more of the difference than the average implies.
No single area dominates — lighting & signalling (7.7%) and tyres (6.3%) are close, so failures are spread across several systems rather than one weak point.
At component level the recurring items are headlamp aim, tread depth and shock absorbers — headlamp aim alone was recorded 112,975 times.
Condition tracks the odometer closely. Failures run at 7.8% in the 0-30k band and 23.3% in the 150k+ band, a 15.5-point spread — more than double.
Split by fuel, petrol examples fail 7.2pp more often than hybrid ones (18.5% vs 11.3%) — worth weighing if you have a choice.
Advisories point at the next bill rather than this one: tyres was flagged on 24.6% of tests without failing them.
How it compares
Versions & engines
MOT records broken out by the engine designations buyers actually search for.
By model year
Every 3 Series model year with a usable sample. Years with their own detailed report are linked.
| Year | Tests | Pass rate | Fail rate | Most common failure |
|---|---|---|---|---|
| 1980 | 43 | 76.7% | 23.3% | Lighting & signalling |
| 1981 | 125 | 80.8% | 19.2% | Lighting & signalling |
| 1982 | 383 | 83.0% | 17.0% | Lighting & signalling |
| 1983 | 304 | 86.5% | 13.5% | Lighting & signalling |
| 1984 | 317 | 81.4% | 18.6% | Lighting & signalling |
| 1985 | 554 | 83.0% | 17.0% | Lighting & signalling |
| 1986 | 1,201 | 83.5% | 16.5% | Lighting & signalling |
| 1987 | 2,200 | 83.9% | 16.1% | Lighting & signalling |
| 1988 | 3,500 | 83.3% | 16.7% | Lighting & signalling |
| 1989 | 5,697 | 84.2% | 15.8% | Lighting & signalling |
| 1990 | 7,674 | 82.8% | 17.2% | Lighting & signalling |
| 1991 | 4,536 | 83.3% | 16.7% | Lighting & signalling |
| 1992 | 2,978 | 82.2% | 17.8% | Lighting & signalling |
| 1993 | 3,088 | 79.5% | 20.5% | Lighting & signalling |
| 1994 | 3,279 | 77.9% | 22.1% | Lighting & signalling |
| 1995 | 5,311 | 77.5% | 22.5% | Lighting & signalling |
| 1996 | 7,892 | 77.3% | 22.7% | Lighting & signalling |
| 1997 | 11,104 | 77.1% | 22.9% | Lighting & signalling |
| 1998 | 14,306 | 78.0% | 22.1% | Lighting & signalling |
| 1999 | 19,712 | 75.8% | 24.1% | Lighting & signalling |
| 2000 | 22,083 | 75.8% | 24.2% | Suspension |
| 2001 | 39,593 | 75.9% | 24.1% | Lighting & signalling |
| 2002 | 59,483 | 76.1% | 23.9% | Brakes |
| 2003 | 78,535 | 75.7% | 24.3% | Brakes |
| 2004 | 75,296 | 75.2% | 24.8% | Brakes |
| 2005 | 92,143 | 76.6% | 23.4% | Brakes |
| 2006 | 137,664 | 78.3% | 21.7% | Lighting & signalling |
| 2007 | 181,353 | 78.7% | 21.3% | Lighting & signalling |
| 2008 | 155,384 | 78.3% | 21.7% | Suspension |
| 2009 | 153,968 | 78.0% | 22.0% | Lighting & signalling |
| 2010 | 171,763 | 78.9% | 21.1% | Lighting & signalling |
| 2011 | 181,620 | 80.0% | 20.0% | Lighting & signalling |
| 2012 | 207,604 | 80.4% | 19.6% | Lighting & signalling |
| 2013 | 207,466 | 83.6% | 16.4% | Lighting & signalling |
| 2014 | 188,788 | 85.5% | 14.5% | Lighting & signalling |
| 2015 | 181,444 | 87.7% | 12.3% | Tyres |
| 2016 | 178,796 | 89.2% | 10.8% | Tyres |
| 2017 | 173,376 | 89.8% | 10.2% | Tyres |
| 2018 | 139,847 | 90.2% | 9.8% | Tyres |
| 2019 | 116,624 | 89.7% | 10.3% | Tyres |
| 2020 | 75,041 | 89.1% | 10.9% | Tyres |
| 2021 | 58,623 | 89.4% | 10.6% | Tyres |
| 2022 | 15,837 | 89.1% | 10.9% | Tyres |
| 2023 | 670 | 90.8% | 9.3% | Tyres |
Most common failures (all years)
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 7.7% | 230,924 |
| 2 | Tyres | 6.3% | 189,445 |
| 3 | Suspension | 5.7% | 171,097 |
| 4 | Brakes | 5.6% | 166,321 |
| 5 | Visibility | 3.0% | 90,035 |
| 6 | Emissions & environmental | 2.3% | 69,693 |
| 7 | Body, structure & corrosion | 1.1% | 33,239 |
| 8 | Seat belts & restraints | 1.0% | 30,188 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Headlamp aim | 112,975 |
| 2 | Tread depth | 103,123 |
| 3 | Shock absorbers | 88,214 |
| 4 | Position lamp | 75,417 |
| 5 | Washers | 63,541 |
| 6 | Rbt (sp) | 53,450 |
| 7 | Brake pads | 52,740 |
| 8 | Headlamp | 52,498 |
Top advisory categories
Advisories aren't failures, but they flag work likely needed soon — useful when budgeting.
| # | Category | % of tests with advisory | Tests |
|---|---|---|---|
| 1 | Tyres | 24.6% | 733,604 |
| 2 | Brakes | 23.4% | 697,646 |
| 3 | Suspension | 17.2% | 513,993 |
| 4 | Other defects | 9.9% | 295,127 |
| 5 | Emissions & environmental | 8.2% | 245,412 |
| 6 | Visibility | 4.8% | 144,111 |
Failure rate by mileage
Higher-mileage cars tend to fail more — often the most useful guide to real condition.
| Mileage band | Tests | Fail rate |
|---|---|---|
| 0-30k | 178,483 | 7.8% |
| 30-60k | 543,397 | 11.0% |
| 60-90k | 687,685 | 15.7% |
| 90-120k | 675,675 | 19.9% |
| 120-150k | 489,053 | 22.0% |
| 150k+ | 410,724 | 23.3% |
Failure rate by age
By fuel type
| Fuel | Tests | Fail rate |
|---|---|---|
| Diesel | 1,778,707 | 17.3% |
| Petrol | 1,057,940 | 18.5% |
| Hybrid | 150,470 | 11.3% |
| Electric | 55 | 20.0% |
| Other | 38 | 10.5% |
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 621,195 | 17.9% |
| 2022 | 614,822 | 17.6% |
| 2023 | 602,801 | 17.4% |
| 2024 | 587,346 | 17.3% |
| 2025 | 561,073 | 16.8% |
What to check before buying a BMW 3 Series
- Lighting & signalling (7.7% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Tyres (6.3% of tests): Usually a quick, known-cost fix, but check tread, age and uneven wear (which can hint at alignment or suspension issues). Typical repair: £50–£120 per tyre.
- Suspension (5.7% of tests): Worn drop links, bushes, springs or shocks — listen for knocks over bumps and check for uneven tyre wear. Typical repair: £150–£450 per corner.
Repair costs are rough UK ballpark ranges to set expectations, not quotes — actual prices vary widely by car, parts and garage.
Frequently asked questions
What is the MOT pass rate for the BMW 3 Series?
82.6% of the 2,987,237 BMW 3 Series MOT tests in this dataset passed, a 17.4% fail rate, across model years 1980–2025.
What does the BMW 3 Series most often fail its MOT on?
Lighting & signalling, recorded in 7.7% of tests, then tyres (6.3%).
Which 3 Series years are best and worst for MOT results?
2018 has the best pass rate at 90.2% and 2004 the weakest at 75.2%, from 139,847 and 75,296 tests respectively.
How much does mileage affect 3 Series MOT results?
Fail rates run at 7.8% for cars in the 0-30k band and 23.3% for 150k+, a 15.5-point difference.
Is the hybrid or petrol 3 Series more reliable at MOT time?
On MOT-testable defects the hybrid fails 11.3% of the time against 18.5% for the petrol. This covers testable items only, not engine or gearbox reliability.
Methodology & source. Based on 2,987,237 MOT tests. Dataset: DVSA MOT testing data (2021,2022,2023,2024,2025). Data last updated 2026-07-27. Figures reflect MOT-testable defects only — read the methodology for how these are calculated and what they don't measure.