BMW 520D M SPORT MHEV AUTO (2021)
Running costs, common problems, and reliability data based on 3,423 real MOT tests in 2024.
MOT Pass Rate
89%
Total Tests (2024)
3,423
Avg Mileage
35,018 mi
Est. Annual Cost
£1,922
Is the 2021 BMW 520D M SPORT MHEV AUTO reliable?
Good reliability. Occasional issues but generally solid. That's 7 points above the national average of 82%.
At 3 years old, 89% of BMW 520D M SPORT MHEV AUTOs from 2021 passed their MOT first time in 2024. That's based on 3,423 tests across the UK. The average mileage at this age is 35,018 miles.
How does the 2021 BMW 520D M SPORT MHEV AUTO compare?
Mileage Analysis
The average 2021 BMW 520D M SPORT MHEV AUTO has 35,018 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.
Best year to buy a BMW 520D M SPORT MHEV AUTO?
The most reliable year is the 2022 model with a 94% MOT pass rate, while the 2021 model has the lowest at 89%. Consider a different year if reliability is a priority.
How much does a 2021 BMW 520D 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 520D M SPORT MHEV AUTO by Year
Checking a specific BMW 520D M SPORT MHEV AUTO?
Enter the reg plate to see its individual MOT history, mileage verification, and predicted costs.
About the 2021 BMW 520D M SPORT MHEV AUTO
The 2021 BMW 520D M SPORT MHEV AUTO is a premium with a 1995cc petrol engine. 3,423 of these vehicles were MOT tested in 2024, making it a reasonably common sight on UK roads. It sits in the bottom 79% of 2021 cars for MOT pass rates.
With an average of 35,018 miles at 3 years old, BMW 520D 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 520D M SPORT MHEV AUTO Fuel Costs
The 1995cc petrol engine offers a reasonable balance between performance and economy. Expect around 36 mpg in mixed driving, which works out to roughly £1,327 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 520D M SPORT MHEV AUTO?
Total estimated annual running cost is £1,922 (£160/month), broken down as £1327 fuel, £190 road tax, £55 MOT, and £350 predicted repairs. Repair costs are moderate, reflecting the 89% pass rate. Keeping on top of servicing will help avoid surprises.
BMW 520D M SPORT MHEV AUTO Reliability Trend
The BMW 520D M SPORT MHEV AUTO has maintained consistent MOT pass rates across model years, varying by only 1 percentage points.
Buying a Used 2021 BMW 520D 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 520D M SPORT MHEV AUTO
If reliability is your priority, there are 4 similar cars with a higher MOT pass rate. Here are comparable petrol cars with similar engines:
- LAND ROVER DISCOVERY SPORT R-DYN SE D A (2020) 90% pass rate (+1%) from 5,505 tests
- BMW 320D M SPORT MHEV AUTO (2021) 91% pass rate (+2%) from 3,336 tests
- VOLVO XC90 R-DESIGN B5 MHEV AWD AUTO (2021) 90% pass rate (+1%) from 2,911 tests
- BMW X4 XDRIVE20D M SPORT MHEV AUTO (2021) 94% pass rate (+5%) from 2,276 tests