BENTLEY MULSANNE (2021)
Running costs, common problems, and reliability data based on 54 real MOT tests in 2024.
MOT Pass Rate
96%
Total Tests (2024)
54
Avg Mileage
9,124 mi
Est. Annual Cost
£2,037
Is the 2021 BENTLEY MULSANNE reliable?
Excellent reliability. Very few MOT failures. That's 14 points above the national average of 82%.
At 3 years old, 96% of BENTLEY MULSANNEs from 2021 passed their MOT first time in 2024. That's based on 54 tests across the UK. The average mileage at this age is 9,124 miles.
How does the 2021 BENTLEY MULSANNE compare?
Mileage Analysis
The average 2021 BENTLEY MULSANNE has 9,124 miles on the clock, which is significantly below the expected 22,200 miles for a 3-year-old car. Low-mileage examples may have spent time sitting unused, so check for issues like corroded brakes or perished rubber seals.
Best year to buy a BENTLEY MULSANNE?
The most reliable year is the 2018 model with a 100% MOT pass rate, while the 1991 model has the lowest at 86%. The 2021 sits between the two at 96%.
How much does a 2021 BENTLEY MULSANNE cost to run?
Based on 7,400 miles/year (UK average), current fuel prices, and repair likelihood from MOT pass rate data. Insurance not included.
BENTLEY MULSANNE by Year
Checking a specific BENTLEY MULSANNE?
Enter the reg plate to see its individual MOT history, mileage verification, and predicted costs.
About the 2021 BENTLEY MULSANNE
The 2021 BENTLEY MULSANNE is a luxury with a 6752cc petrol engine. 54 of these vehicles were MOT tested in 2024, making it a rare model on UK roads. It ranks in the top 21% of all 2021 cars for reliability.
With an average of 9,124 miles at 3 years old, BENTLEY MULSANNE owners tend to use this car less than the typical driver. Very low mileage could mean the car has been garaged or used only for short trips, which can cause its own issues like battery drain and moisture buildup.
2021 BENTLEY MULSANNE Fuel Costs
The 6752cc petrol engine is on the larger side, so fuel won't be this car's strong point. Expect around 30 mpg in mixed driving, which works out to roughly £1,592 per year at current petrol prices of 142p per litre (based on 7,400 miles per year).
What does it cost to own a 2021 BENTLEY MULSANNE?
Total estimated annual running cost is £2,037 (£170/month), broken down as £1592 fuel, £190 road tax, £55 MOT, and £200 predicted repairs. The low repair estimate reflects the excellent 96% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.
BENTLEY MULSANNE Reliability Trend
Newer BENTLEY MULSANNEs show better MOT pass rates than older ones, with an average improvement of 4 percentage points.
Buying a Used 2021 BENTLEY MULSANNE
At 3 years old, this is still relatively fresh. You may find examples with remaining manufacturer warranty. Depreciation is slowing but hasn't bottomed out yet. If you're flexible on year, the 2018 model has the highest pass rate at 100%. Note: with only 54 tests in our data, these figures should be treated as indicative rather than definitive.
Alternatives to the 2021 BENTLEY MULSANNE
If reliability is your priority, there are 3 similar cars with a higher MOT pass rate. Here are comparable petrol cars with similar engines:
- FERRARI 812 SUPERFAST S-A (2019) 98% pass rate (+2%) from 1,107 tests
- ROLLS ROYCE CULLINAN V12 AUTO (2019) 100% pass rate (+4%) from 700 tests
- FERRARI 812 SUPERFAST GTS S-A (2021) 100% pass rate (+4%) from 459 tests
- ROLLS ROYCE DAWN (2019) 96% pass rate (same) from 231 tests