BMW 545i — MOT pass rate & failures
The BMW 545i recorded a 79.0% MOT pass rate across 1,481 tests in this dataset (model years 1990–2019), with suspension, lighting & signalling and brakes its most common failure areas. Its 21.0% fail rate is higher than the 15.7% average across all BMW 5 Series versions.
How it compares
By model year
| Year | Tests | Pass rate | Fail rate |
|---|---|---|---|
| 2003 | 235 | 80.0% | 20.0% |
| 2004 | 820 | 78.8% | 21.2% |
| 2005 | 357 | 79.3% | 20.7% |
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Suspension | 10.5% | 156 |
| 2 | Lighting & signalling | 7.0% | 104 |
| 3 | Brakes | 6.3% | 94 |
| 4 | Tyres | 5.9% | 88 |
| 5 | Seat belts & restraints | 5.3% | 79 |
| 6 | Emissions & environmental | 5.3% | 78 |
| 7 | Visibility | 2.7% | 40 |
| 8 | Steering | 2.4% | 36 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | SRS malfunction indicator lamp | 73 |
| 2 | Headlamp aim | 61 |
| 3 | Tread depth | 60 |
| 4 | Pins and bushes | 58 |
| 5 | Ball joint | 51 |
| 6 | Rigid brake pipes | 47 |
Top advisory categories
Advisories aren't failures, but they flag work likely needed soon — useful when budgeting.
| # | Category | % of tests with advisory | Tests |
|---|---|---|---|
| 1 | Brakes | 32.8% | 486 |
| 2 | Emissions & environmental | 28.5% | 422 |
| 3 | Suspension | 23.4% | 346 |
| 4 | Tyres | 21.7% | 322 |
| 5 | Lighting & signalling | 11.1% | 164 |
| 6 | Other defects | 8.8% | 130 |
Failure rate by mileage
Higher-mileage cars tend to fail more — often the most useful guide to real condition.
| Mileage band | Tests | Fail rate |
|---|---|---|
| 30-60k | 50 | 14.0% |
| 60-90k | 210 | 22.4% |
| 90-120k | 455 | 20.4% |
| 120-150k | 399 | 20.1% |
| 150k+ | 356 | 23.6% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 354 | 22.0% |
| 2022 | 320 | 21.6% |
| 2023 | 295 | 22.4% |
| 2024 | 272 | 19.9% |
| 2025 | 240 | 18.3% |
What to check before buying a BMW 545i
Focus on the areas it most often fails on — and remember MOT data covers testable defects only, not engine or gearbox health.
- Suspension (10.5% 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.
- Lighting & signalling (7.0% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Brakes (6.3% of tests): Pads/discs are routine wear; binding, imbalance or corroded pipes are more serious — test for pulling under braking. Typical repair: £100–£350 per axle.
Repair costs are rough UK ballpark ranges to set expectations, not quotes — actual prices vary widely by car, parts and garage.
Frequently asked questions
How reliable is the BMW 545i at MOT time?
79.0% of the 1,481 BMW 545i MOT tests in this dataset passed — a 21.0% fail rate, worse than the 15.7% average across all 5 Series versions.
What is the most common MOT failure on a BMW 545i?
Suspension, recorded in 10.5% of tests, followed by lighting & signalling (7.0%).
Does the 545i get worse with mileage?
Its MOT fail rate rises from 14.0% in the 30-60k band to 23.6% in the 150k+ band.
Methodology & source. Based on 1,481 MOT tests. Dataset: DVSA MOT testing data (2021,2022,2023,2024,2025). Data last updated 2026-07-06. Figures reflect MOT-testable defects only — read the methodology for how these are calculated and what they don't measure.