BMW M340I XDRIVE AUTO (2021)
Running costs, common problems, and reliability data based on 59 real MOT tests in 2024.
MOT Pass Rate
100%
Total Tests (2024)
59
Avg Mileage
24,449 mi
Est. Annual Cost
£2,037
Is the 2021 BMW M340I XDRIVE AUTO reliable?
Excellent reliability. Very few MOT failures. That's 18 points above the national average of 82%. It also outperforms the BMW brand average of 88%.
At 3 years old, 100% of BMW M340I XDRIVE AUTOs from 2021 passed their MOT first time in 2024. That's based on 59 tests across the UK. The average mileage at this age is 24,449 miles.
How does the 2021 BMW M340I XDRIVE AUTO compare?
Mileage Analysis
The average 2021 BMW M340I XDRIVE AUTO has 24,449 miles on the clock, which is in line with the expected 22,200 miles for a 3-year-old car, suggesting normal everyday use.
How much does a 2021 BMW M340I XDRIVE 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 M340I XDRIVE AUTO by Year
Checking a specific BMW M340I XDRIVE AUTO?
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About the 2021 BMW M340I XDRIVE AUTO
The 2021 BMW M340I XDRIVE AUTO is a premium performance with a 2998cc petrol engine. 59 of these vehicles were MOT tested in 2024, making it a rare model on UK roads. It ranks in the top 1% of all 2021 cars for reliability.
With an average of 24,449 miles at 3 years old, BMW M340I XDRIVE AUTO owners drive about as much as the UK average.
2021 BMW M340I XDRIVE AUTO Fuel Costs
The 2998cc 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 M340I XDRIVE 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 100% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.
BMW M340I XDRIVE AUTO Reliability Trend
The BMW M340I XDRIVE AUTO has maintained consistent MOT pass rates across model years, varying by only 3 percentage points.
Buying a Used 2021 BMW M340I XDRIVE 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. Note: with only 59 tests in our data, these figures should be treated as indicative rather than definitive.
Alternatives to the 2021 BMW M340I XDRIVE AUTO
The BMW M340I XDRIVE AUTO is actually the most reliable option among similar petrol premium performances from this era. Here are comparable petrol cars with similar engines:
- BMW 5 SERIES (2019) 92% pass rate (-8%) from 33,766 tests
- BMW X3 (2019) 92% pass rate (-8%) from 32,937 tests
- MERCEDES GLC (2019) 93% pass rate (-7%) from 30,341 tests
- BMW X5 (2019) 92% pass rate (-8%) from 23,506 tests