Bentley Mulsanne

Reliability, estimated running costs, and MOT data across 14 model years from 2,491 MOT tests in 2024.

Avg Pass Rate

96%

Total Tests

2,491

Highest Pass Rate

2017 (99%)

Years Covered

About the Bentley Mulsanne

The Bentley Mulsanne was MOT tested 2,491 times in 2024 (DVSA data, retests included) across 14 model years (1990 to 2021), with an average pass rate of 96%. That's comfortably above the average of 82% across all models in our data. Our records list petrol versions.

Best and Worst Years

Of the years with at least 100 tests, the 2017 model has the highest pass rate at 99% from 297 tests. The 1990 model has the lowest at 88%. The 11 point gap means pass rates vary somewhat between years, but no year is dramatically different. Newer cars usually pass more often simply because they are younger.

Reliability Trend

Newer Bentley Mulsannes pass their MOT more often than older ones, by 4 percentage points on average, which is mostly down to age and wear.

Mileage Across Years

The oldest model in our data (1990) averages 78,194 miles, while the newest (2021) averages 9,124 miles.

Estimated Running Costs

Fuel (Petrol, 6752cc)

£1,958

Road Tax

£200

MOT Test

£55

Predicted Repairs

£200

Total per year£2,413

Per month£201/mo

Based on 7,400 miles/year, average pump prices of 174.57p petrol and 199.33p diesel (GOV.UK weekly road fuel prices, week of 19 October 2026), and MOT pass rate data. Insurance not included.

Full 2021 details

How reliable is the Bentley Mulsanne?

vs average of all models+14% (82% avg)

vs Bentley brand average+2% (94% avg)

Best to worst year spread11 percentage points

Reliability trendImproving over years

Bentley Mulsanne by Year

Click any year to see detailed running costs, reliability data, and comparisons with similar cars.

Year	Pass Rate	Tests	Avg Mileage
2021	96%	54	9,124 mi
2020	99%	76	12,990 mi
2019	98%	197	21,125 mi
2018	100%	95	27,069 mi
2017	99%	297	22,331 mi
2016	98%	335	27,325 mi
2015	95%	249	28,860 mi
2014	99%	237	41,306 mi
2013	98%	175	35,886 mi
2012	96%	203	43,144 mi
2011	93%	283	47,470 mi
2010	100%	86	60,646 mi
1991	86%	66	83,012 mi
1990	88%	138	78,194 mi

Questions about the Bentley Mulsanne

Is the Bentley Mulsanne reliable?

Across its 14 model years in our data (1990 to 2021), the Bentley Mulsanne averages a 96% MOT pass rate, from 2,491 tests (DVSA MOT data for tests in 2024, retests included). That's 14 points above the average of 82% across all models in the same data. The 2017 model has the highest pass rate of the years with at least 100 tests, at 99%.

Which year Bentley Mulsanne has the best MOT pass rate?

Of the years with at least 100 tests, the 2017 Bentley Mulsanne has the highest MOT pass rate at 99%, while the 1990 model has the lowest at 88%, a 11 point gap. Newer cars usually pass more often simply because they are younger, so compare years of a similar age.