2023 BMW 1 Series — MOT failures & pass rate
Across 1,336 MOT tests, the 2023 BMW 1 Series recorded a 96.3% pass rate. Small family cars of a similar age fail 6.0% of the time, so this is 2.3pp better than the group it competes with. Failures cluster in tyres, lighting & signalling and visibility.
What the MOT record shows
No single area dominates — tyres (3.0%) and lighting & signalling (0.8%) 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 washers — headlamp aim alone was recorded 14 times.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Tyres | 3.0% | 40 |
| 2 | Lighting & signalling | 0.8% | 11 |
| 3 | Visibility | 0.7% | 9 |
| 4 | Suspension | 0.2% | 3 |
| 5 | Road wheels | 0.2% | 3 |
| 6 | Brakes | 0.2% | 3 |
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 | 14 |
| 2 | Tread depth | 8 |
| 3 | Washers | 5 |
| 4 | Wipers | 4 |
| 5 | Attachment | 3 |
| 6 | Registration plates | 2 |
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 | 7.6% | 102 |
| 2 | Brakes | 2.2% | 29 |
| 3 | Other defects | 1.9% | 25 |
| 4 | Road wheels | 0.4% | 5 |
| 5 | Visibility | 0.4% | 5 |
| 6 | Suspension | 0.1% | 2 |
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 | 1,117 | 2.9% |
| 30-60k | 196 | 7.1% |
By fuel type
| Fuel | Tests | Fail rate |
|---|---|---|
| Petrol | 1,241 | 3.6% |
| Diesel | 95 | 5.3% |
What to check before buying a 2023 1 Series
The failure pattern for this year is specific enough to inspect against: tyres accounted for 3.0% of tests. Start there.
- Tyres (3.0% 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.
- Lighting & signalling (0.8% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Visibility (0.7% of tests): Wipers, washers, mirrors and screen damage — usually inexpensive, but check for chips in the driver's line of sight. Typical repair: £15–£150.
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 many 2023 BMW 1 Seriess pass their MOT?
96.3% of the 1,336 2023 BMW 1 Series MOT tests in this dataset passed — a 3.7% fail rate.
What is the most common MOT failure on a 2023 BMW 1 Series?
Tyres, recorded in 3.0% of tests, followed by lighting & signalling (0.8%).
Does the 2023 1 Series get worse with mileage?
Its MOT fail rate rises from 2.9% in the 0-30k band to 7.1% in the 30-60k band.
Methodology & source. Based on 1,336 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.