BMW M550I XDRIVE AUTO (2021)
Running costs, common problems, and reliability data based on 263 real MOT tests in 2024.
MOT Pass Rate
91%
Total Tests (2024)
263
Avg Mileage
24,402 mi
Est. Annual Cost
£2,037
Is the 2021 BMW M550I XDRIVE 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 M550I XDRIVE AUTOs from 2021 passed their MOT first time in 2024. That's based on 263 tests across the UK. The average mileage at this age is 24,402 miles.
How does the 2021 BMW M550I XDRIVE AUTO compare?
Mileage Analysis
The average 2021 BMW M550I XDRIVE AUTO has 24,402 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 M550I 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.
Checking a specific BMW M550I XDRIVE AUTO?
Enter the reg plate to see its individual MOT history, mileage verification, and predicted costs.
About the 2021 BMW M550I XDRIVE AUTO
The 2021 BMW M550I XDRIVE AUTO is a premium performance with a 4395cc petrol engine. 263 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 24,402 miles at 3 years old, BMW M550I XDRIVE AUTO owners drive about as much as the UK average.
2021 BMW M550I XDRIVE AUTO Fuel Costs
The 4395cc 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 M550I 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 91% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.
Buying a Used 2021 BMW M550I 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.
Alternatives to the 2021 BMW M550I XDRIVE 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:
- MERCEDES C (2019) 91% pass rate (same) from 52,838 tests
- PORSCHE CAYENNE (2019) 95% pass rate (+4%) from 9,063 tests
- PORSCHE 911 (2019) 97% pass rate (+6%) from 7,188 tests
- AUDI A6 (2020) 94% pass rate (+3%) from 3,470 tests