2017 Bentley Continental Gt — MOT failures & pass rate
2,984 MOT tests on the 2017 Bentley Continental Gt are in this dataset, and 95.9% of them passed. That is 5.7 percentage points better than coupes & convertibles of a similar age, which fail at 9.8%. Failures cluster in tyres, lighting & signalling and other defects.
What the MOT record shows
No single area dominates — tyres (2.6%) and lighting & signalling (1.1%) are close, so failures are spread across several systems rather than one weak point.
At component level the recurring items are registration plates, headlamp aim and headlamp cleaning device — registration plates alone was recorded 35 times.
Condition tracks the odometer closely. Failures run at 3.4% in the 0-30k band and 11.9% in the 60-90k band, a 8.6-point spread — more than double.
Tyres is the most common advisory, noted on 9.6% of tests — work that passed today but is likely due soon.
The trend is worsening — 3.1% of tests failed in 2021 against 4.6% in 2025, the usual pattern as a fleet ages.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Tyres | 2.6% | 78 |
| 2 | Lighting & signalling | 1.1% | 32 |
| 3 | Other defects | 0.7% | 21 |
| 4 | Brakes | 0.3% | 10 |
| 5 | Emissions & environmental | 0.3% | 9 |
| 6 | Visibility | 0.3% | 8 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Registration plates | 35 |
| 2 | Headlamp aim | 19 |
| 3 | Headlamp cleaning device | 12 |
| 4 | Tread depth | 11 |
| 5 | Catalyst emissions | 9 |
| 6 | SRS malfunction indicator lamp | 6 |
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 | 9.6% | 286 |
| 2 | Brakes | 2.8% | 82 |
| 3 | Other defects | 1.4% | 43 |
| 4 | Suspension | 0.7% | 21 |
| 5 | Visibility | 0.6% | 19 |
| 6 | Lighting & signalling | 0.4% | 13 |
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 | 2,140 | 3.4% |
| 30-60k | 775 | 5.5% |
| 60-90k | 67 | 11.9% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 619 | 3.1% |
| 2022 | 598 | 4.2% |
| 2023 | 604 | 4.6% |
| 2024 | 576 | 4.2% |
| 2025 | 587 | 4.6% |
What to check before buying a 2017 Continental Gt
The failure pattern for this year is specific enough to inspect against: tyres accounted for 2.6% of tests. Start there.
- Tyres (2.6% 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 (1.1% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Other defects (0.7% of tests): Miscellaneous items not in the main categories. Typical repair: varies.
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 2017 Bentley Continental Gts pass their MOT?
95.9% of the 2,984 2017 Bentley Continental Gt MOT tests in this dataset passed — a 4.1% fail rate.
What is the most common MOT failure on a 2017 Bentley Continental Gt?
Tyres, recorded in 2.6% of tests, followed by lighting & signalling (1.1%).
Does the 2017 Continental Gt get worse with mileage?
Its MOT fail rate rises from 3.4% in the 0-30k band to 11.9% in the 60-90k band.
Methodology & source. Based on 2,984 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.