BMW X3 M40D MHEV AUTO (2021)
Running costs, reliability data, and common problems from 488 real MOT tests.
Annual Cost
£2,042
£170/month
MOT Pass Rate
94%
Excellent
Road Tax
£195
Flat rate/year
Insurance
Grp 30-42
2993cc Petrol
Great Choice
94% pass rate, £2042/year to run. 12 points above average.
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Annual Running Costs
~30 mpg
Flat rate (post-2017)
Low estimate due to excellent reliability
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
Excellent reliability. Very few MOT failures. That's 12 points above the national average of 82%. It also outperforms the BMW brand average of 88%.
At 5 years old, 94% of BMW X3 M40D MHEV AUTOs from 2021 passed their MOT first time in 2026. That's based on 488 tests across the UK. The average mileage at this age is 30,448 miles.
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How Does It Compare?
Mileage Analysis
30,448
Average miles
37,000
Expected for age
The average 2021 BMW X3 M40D MHEV AUTO has 30,448 miles on the clock, which is in line with the expected 37,000 miles for a 5-year-old car, suggesting normal everyday use.
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Best Year to Buy?
The most reliable year is the 2022 model with a 100% MOT pass rate, while the 2020 model has the lowest at 89%. The 2021 sits between the two at 94%.
BMW X3 M40D MHEV AUTO by Year
Similar Cars to Consider
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About the 2021 BMW X3 M40D MHEV AUTO
The 2021 BMW X3 M40D MHEV AUTO is a premium performance with a 2993cc petrol engine. 488 of these vehicles were MOT tested in 2026, 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 beats that benchmark.
With an average of 30,448 miles at 5 years old, BMW X3 M40D MHEV AUTO owners drive about as much as the UK average.
2021 BMW X3 M40D 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 X3 M40D MHEV AUTO?
Total estimated annual running cost is £2,042 (£170/month), broken down as £1592 fuel, £195 road tax, £55 MOT, and £200 predicted repairs. The low repair estimate reflects the excellent 94% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.
BMW X3 M40D MHEV AUTO Reliability Trend
Newer BMW X3 M40D MHEV AUTOs show better MOT pass rates than older ones, with an average improvement of 8 percentage points.
Buying a Used 2021 BMW X3 M40D MHEV AUTO
At 5 years old, the BMW X3 M40D 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. If you're flexible on year, the 2022 model has the highest pass rate at 100%.
Common Issues to Watch For
Based on the 2021 BMW X3 M40D 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 2021 BMW X3 M40D 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 X3 M40D MHEV AUTO(2021) | 94% | £1592 | £195 | Grp 30-42 | £2042 |
| LAND ROVER RANGE ROVER VELAR(2020) | 92% | £1592 | £190 | Grp 30-42 | £2037-£5 |
| BMW X5 XDRIVE30D M SPORT MHEV AUTO(2021) | 92% | £1592 | £190 | Grp 30-42 | £2037-£5 |
| BMW M340D XDRIVE MHEV AUTO(2021) | 92% | £1592 | £190 | Grp 30-42 | £2037-£5 |
| BMW 530D XDRIVE M SPORT MHEV AUTO(2021) | 89% | £1592 | £190 | Grp 30-42 | £2187+£145 |
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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