BMW 840D XDRIVE M SPORT MHEV AUTO (2020)
Running costs, reliability data, and common problems from 42 real MOT tests.
Annual Cost
£2,192
£183/month
MOT Pass Rate
88%
Good
Road Tax
£195
Flat rate/year
Insurance
Grp 30-42
2993cc Petrol
Solid Option
88% pass rate, £2192/year to run. 6 points above average.
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Annual Running Costs
~30 mpg
Flat rate (post-2017)
Based on 7,400 miles/year (UK average), current fuel prices, and repair likelihood from MOT data. Insurance not included.
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Reliability Verdict
Good reliability. Occasional issues but generally solid. That's 6 points above the national average of 82%.
At 6 years old, 88% of BMW 840D XDRIVE M SPORT MHEV AUTOs from 2020 passed their MOT first time in 2026. That's based on 42 tests across the UK. The average mileage at this age is 44,410 miles.
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How Does It Compare?
Mileage Analysis
44,410
Average miles
44,400
Expected for age
The average 2020 BMW 840D XDRIVE M SPORT MHEV AUTO has 44,410 miles on the clock, which is in line with the expected 44,400 miles for a 6-year-old car, suggesting normal everyday use.
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BMW 840D XDRIVE M SPORT MHEV AUTO by Year
Similar Cars to Consider
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About the 2020 BMW 840D XDRIVE M SPORT MHEV AUTO
The 2020 BMW 840D XDRIVE M SPORT MHEV AUTO is a premium performance with a 2993cc petrol engine. 42 of these vehicles were MOT tested in 2026, making it a rare model on UK roads. It sits in the bottom 85% of 2020 cars for MOT pass rates.
With an average of 44,410 miles at 6 years old, BMW 840D XDRIVE M SPORT MHEV AUTO owners drive about as much as the UK average.
2020 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 2020 BMW 840D XDRIVE M SPORT MHEV AUTO?
Total estimated annual running cost is £2,192 (£183/month), broken down as £1592 fuel, £195 road tax, £55 MOT, and £350 predicted repairs. Repair costs are moderate, reflecting the 88% pass rate. Keeping on top of servicing will help avoid surprises.
Buying a Used 2020 BMW 840D XDRIVE M SPORT MHEV AUTO
At 6 years old, the BMW 840D XDRIVE M SPORT MHEV AUTO offers good value with plenty of life remaining. Most manufacturer warranties will have expired, so a pre-purchase inspection is worth the cost. Note: with only 42 tests in our data, these figures should be treated as indicative rather than definitive.
Common Issues to Watch For
Based on the 2020 BMW 840D XDRIVE M SPORT MHEV AUTO's fuel type, age, and engine size, these are the most likely problem areas to check.
Service History
Low riskAlways request a full service history. Regular servicing is the single best indicator of how well a car has been maintained, regardless of mileage.
Running Costs Compared
How the 2020 BMW 840D XDRIVE M SPORT MHEV AUTO stacks up against similar cars for annual running costs, insurance, and tax.
| Car | Pass Rate | Fuel/yr | Tax/yr | Insurance | Total/yr |
|---|---|---|---|---|---|
| BMW 840D XDRIVE M SPORT MHEV AUTO(2020) | 88% | £1592 | £195 | Grp 30-42 | £2192 |
| LAND ROVER RANGE ROVER VELAR(2020) | 92% | £1592 | £190 | Grp 30-42 | £2037-£155 |
| BMW X5 XDRIVE30D M SPORT MHEV AUTO(2021) | 92% | £1592 | £190 | Grp 30-42 | £2037-£155 |
| BMW M340D XDRIVE MHEV AUTO(2021) | 92% | £1592 | £190 | Grp 30-42 | £2037-£155 |
| BMW 530D XDRIVE M SPORT MHEV AUTO(2021) | 89% | £1592 | £190 | Grp 30-42 | £2187-£5 |
Estimates based on 7,400 miles/year, current fuel prices, and MOT data. Insurance groups are indicative. Actual costs vary by driver, location, and usage.
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