BMW 840D XDRIVE M SPORT MHEV AUTO (2021)
Running costs, common problems, and reliability data based on 543 real MOT tests in 2024.
MOT Pass Rate
91%
Total Tests (2024)
543
Avg Mileage
33,980 mi
Est. Annual Cost
£2,037
Is the 2021 BMW 840D XDRIVE M SPORT MHEV AUTO reliable?
Excellent reliability. Very few MOT failures. That's 9 points above the national average of 82%.
At 3 years old, 91% of BMW 840D XDRIVE M SPORT MHEV AUTOs from 2021 passed their MOT first time in 2024. That's based on 543 tests across the UK. The average mileage at this age is 33,980 miles.
How does the 2021 BMW 840D XDRIVE M SPORT MHEV AUTO compare?
Mileage Analysis
The average 2021 BMW 840D XDRIVE M SPORT MHEV AUTO has 33,980 miles on the clock, which is well above the expected 22,200 miles for a 3-year-old car. Check service history carefully, as high-mileage cars need consistent maintenance to stay reliable.
How much does a 2021 BMW 840D XDRIVE M SPORT MHEV AUTO 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.
BMW 840D XDRIVE M SPORT MHEV AUTO by Year
Checking a specific BMW 840D XDRIVE M SPORT MHEV AUTO?
Enter the reg plate to see its individual MOT history, mileage verification, and predicted costs.
About the 2021 BMW 840D XDRIVE M SPORT MHEV AUTO
The 2021 BMW 840D XDRIVE M SPORT MHEV AUTO is a premium performance with a 2993cc petrol engine. 543 of these vehicles were MOT tested in 2024, making it a less common model in the UK market. Among all cars from 2021, the average MOT pass rate is 92%, and this model falls short of that benchmark.
With an average of 33,980 miles at 3 years old, BMW 840D XDRIVE M SPORT MHEV AUTO owners cover more miles than the average driver. High-mileage examples should be checked carefully for wear on suspension, brakes, and drivetrain components.
2021 BMW 840D XDRIVE M SPORT MHEV AUTO Fuel Costs
The 2993cc 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 BMW 840D XDRIVE M SPORT MHEV AUTO?
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 91% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.
Buying a Used 2021 BMW 840D XDRIVE M SPORT MHEV AUTO
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.
Alternatives to the 2021 BMW 840D XDRIVE M SPORT MHEV AUTO
If reliability is your priority, there are 3 similar cars with a higher MOT pass rate. Here are comparable petrol cars with similar engines:
- LAND ROVER RANGE ROVER VELAR (2020) 92% pass rate (+1%) from 12,413 tests
- BMW X5 XDRIVE30D M SPORT MHEV AUTO (2021) 92% pass rate (+1%) from 4,006 tests
- BMW M340D XDRIVE MHEV AUTO (2021) 92% pass rate (+1%) from 3,975 tests
- BMW 530D XDRIVE M SPORT MHEV AUTO (2021) 89% pass rate (-2%) from 2,114 tests