2017 Bentley Bentayga — MOT failures & pass rate
Across 2,946 MOT tests, the 2017 Bentley Bentayga recorded a 95.8% pass rate. Large SUVs of a similar age fail 11.3% of the time, so this is 7.1pp better than the group it competes with. Failures cluster in tyres, suspension and brakes.
What the MOT record shows
No single area dominates — tyres (2.8%) and suspension (0.7%) are close, so failures are spread across several systems rather than one weak point.
At component level the recurring items are pins and bushes, registration plates and tread depth — pins and bushes alone was recorded 26 times.
Mileage matters less than usual here: the 2017 Bentayga fails 3.5% of the time in the 0-30k band and 2.0% at 90-120k, a spread of only 1.5 points.
Fuel type barely separates them — diesel fails 4.0% of the time against 4.6% for petrol.
Tyres is the most common advisory, noted on 10.5% of tests — work that passed today but is likely due soon.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Tyres | 2.8% | 81 |
| 2 | Suspension | 0.7% | 20 |
| 3 | Brakes | 0.6% | 18 |
| 4 | Other defects | 0.5% | 15 |
| 5 | Lighting & signalling | 0.5% | 14 |
| 6 | Emissions & environmental | 0.4% | 13 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Pins and bushes | 26 |
| 2 | Registration plates | 24 |
| 3 | Tread depth | 18 |
| 4 | Brake pads | 11 |
| 5 | Malfunction indicator lamp | 10 |
| 6 | Headlamp aim | 5 |
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 | 10.5% | 310 |
| 2 | Brakes | 3.7% | 110 |
| 3 | Suspension | 2.9% | 87 |
| 4 | Other defects | 2.3% | 67 |
| 5 | Visibility | 1.4% | 42 |
| 6 | Lighting & signalling | 0.2% | 6 |
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 | 1,000 | 3.5% |
| 30-60k | 1,501 | 4.5% |
| 60-90k | 374 | 4.8% |
| 90-120k | 50 | 2.0% |
Failure rate by age
By fuel type
| Fuel | Tests | Fail rate |
|---|---|---|
| Diesel | 1,741 | 4.0% |
| Petrol | 1,205 | 4.6% |
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 606 | 4.0% |
| 2022 | 604 | 4.3% |
| 2023 | 576 | 4.2% |
| 2024 | 586 | 4.8% |
| 2025 | 574 | 4.0% |
What to check before buying a 2017 Bentayga
The failure pattern for this year is specific enough to inspect against: tyres accounted for 2.8% of tests. Start there.
- Tyres (2.8% 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 (0.7% 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.
- Brakes (0.6% 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 many 2017 Bentley Bentaygas pass their MOT?
95.8% of the 2,946 2017 Bentley Bentayga MOT tests in this dataset passed — a 4.2% fail rate.
What is the most common MOT failure on a 2017 Bentley Bentayga?
Tyres, recorded in 2.8% of tests, followed by suspension (0.7%).
Does the 2017 Bentayga get worse with mileage?
Its MOT fail rate rises from 3.5% in the 0-30k band to 2.0% in the 90-120k band.
Methodology & source. Based on 2,946 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.