Bentley Bentayga reliability, MPG and running costs
Figures updated
The Bentley Bentayga is a car. In 2024 MOT tests it scored 360 for reliability (100 is average), ranking 2 of 442, and 4.4% failed first time against a UK average of 28.5%. Its most common MOT failure is condition (1.1% of tests).
Ranked 2 of 442 cars in the 2024 MOT Reliability League
In 2024, 2,547 Bentley Bentaygas aged 3 to 20 had an MOT and 4.4% failed first time (UK average 28.5%). Taking age and mileage into account, the Bentley Bentayga is 72% less likely to fail than the average car of the same age and mileage. At the first MOT, at three years old, 3.1% failed (UK 12.7%).
First-time fail rate
4.4%
UK 28.5%
Fail rate at 3 years
3.1%
UK 12.7%
Average miles a year
7,100
Typical age at test: 6 years
Bentley Bentayga MOT failure rate by age
Most common Bentley Bentayga MOT faults
- Condition: has a cut in excess of the requirements deep enough to reach the ply or cords1.1% of tests
- Condition: has a bulge, caused by separation or partial failure of its structure0.4% of tests
- Condition: has ply or cords exposed0.4% of tests
- Registration plates: does not conform to the specified requirements0.3% of tests
- Pins and bushes: pin or bush excessively worn0.3% of tests
- Tread depth: tread depth below requirements of 1.6mm0.3% of tests
What the Bentley Bentayga fails on
| Area | Tests failing | vs similar cars |
|---|---|---|
| Tyres | 2.3% | ▼ 56% less often |
| Lights and electrics | 0.5% | ▼ 87% less often |
| Exhaust and emissions | 0.4% | ▼ 58% less often |
| Suspension | 0.4% | ▼ 85% less often |
| Brakes | 0.4% | ▼ 88% less often |
| Visibility | 0.4% | ▼ 89% less often |
| Seat belts and airbags | 0.2% | ▼ 28% less often |
| Wheels | 0.1% | ▼ 61% less often |
| Body and structure | 0.0% | ▼ 100% less often |
| Steering | 0.0% | ▼ 100% less often |
What MPG does the Bentley Bentayga do?
Official economy for the Bentley Bentayga ranges from 19.2 to 21.7mpg across the 8 versions listed by the Vehicle Certification Agency (2019–2025). A typical petrol version manages 21.7mpg. Expect 10–15% less in real-world driving.
Work out a journey's fuel costHow much is road tax on a Bentley Bentayga?
Any Bentley Bentayga first registered from April 2017 pays the standard rate of £200 a year after its first year (2026/27 rates).
Work out tax for a specific carBentley Bentayga specs and running costs
Official figures for 8 versions sold in the UK between 2019 and 2025.
Fuel types
Petrol, Plug-in hybrid
Official economy
19.2–21.7 mpg
CO2
68–335 g/km
Power
340–635 PS
| Version | Fuel | Economy | CO2 | Car tax | Company car tax |
|---|---|---|---|---|---|
| Bentayga EWB V8 Bentayga Extended Wheelbase V8550 PS · 8AT · listed 2025 | Petrol | 21.7 mpg | 294g | £200 | 37% |
| Bentayga Bentayga Hybrid340 PS · 8AT · listed 2025 | Plug-in hybrid | 94.2 mpg | 68g | £200 | 20% |
| Bentayga V8 Bentayga V8550 PS · 8AT · listed 2022 | Petrol | 21.7 mpg | 294g | £200 | 37% |
| Bentayga Bentayga V8550 PS · 8AT · listed 2021 | Petrol | 21.7 mpg | 294g | £200 | – |
| Bentayga Bentayga Speed635 PS · 8AT · listed 2020 | Petrol | 19.2 mpg | 335g | £200 | – |
| Bentayga Hybrid340 PS · 8AT · listed 2020 | Plug-in hybrid | 80.7 mpg | 79g | £200 | – |
| Bentayga Bentayga V8550 PS · A8 · listed 2019 | Petrol | – | – | – | – |
| Bentayga Bentayga Speed635 PS · A8 · listed 2019 | Petrol | – | – | – | – |
Economy and CO2 are official NEDC (before 2018) or WLTP figures. Car tax is the yearly rate at current rates for a car first registered in the year listed, before any expensive car supplement. Company car tax is the 2026/27 benefit-in-kind rate.
What a Bentley Bentayga costs to fuel
- petrol, typical official 21.7mpg…
Official figures are usually 10–15% better than real-world driving.
Work out a journey in a Bentley BentaygaBuying a used Bentley Bentayga?
Check the MOT history of the exact car: every result, advisory and mileage reading, free.
Other Bentley models
Frequently asked questions
›Is the Bentley Bentayga reliable?
Its MOT record is better than average: the Bentley Bentayga is 72% less likely to fail than the average car of the same age and mileage, with a reliability score of 360 in our 2024 league (100 is average).
›What are common problems with the Bentley Bentayga?
The most common MOT fault is “Condition: has a cut in excess of the requirements deep enough to reach the ply or cords”, found in 1.1% of tests.
›What MPG does the Bentley Bentayga do?
Official economy for the Bentley Bentayga ranges from 19.2 to 21.7mpg across the 8 versions listed by the Vehicle Certification Agency (2019–2025). A typical petrol version manages 21.7mpg. Expect 10–15% less in real-world driving.
›How much is road tax on a Bentley Bentayga?
Any Bentley Bentayga first registered from April 2017 pays the standard rate of £200 a year after its first year (2026/27 rates).
›How many Bentley Bentaygas fail their MOT?
4.4% of Bentley Bentaygas aged 3 to 20 failed their MOT first time in 2024, and 3.1% failed at their first MOT.
Sources: DVSA anonymised MOT tests 2024, all versions of the Bentley Bentayga combined (Open Government Licence v3.0); official economy and CO2 from Vehicle Certification Agency data, © Crown copyright. VCA cannot accept liability for its accuracy. How we calculate the league.