BMW M5 CS AUTO (2021)
Running costs, common problems, and reliability data based on 56 real MOT tests in 2024.
MOT Pass Rate
88%
Total Tests (2024)
56
Avg Mileage
11,098 mi
Est. Annual Cost
£2,187
Is the 2021 BMW M5 CS AUTO reliable?
Good reliability. Occasional issues but generally solid. That's 6 points above the national average of 82%.
At 3 years old, 88% of BMW M5 CS AUTOs from 2021 passed their MOT first time in 2024. That's based on 56 tests across the UK. The average mileage at this age is 11,098 miles.
How does the 2021 BMW M5 CS AUTO compare?
Mileage Analysis
The average 2021 BMW M5 CS AUTO has 11,098 miles on the clock, which is significantly below the expected 22,200 miles for a 3-year-old car. Low-mileage examples may have spent time sitting unused, so check for issues like corroded brakes or perished rubber seals.
How much does a 2021 BMW M5 CS 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 M5 CS AUTO?
Enter the reg plate to see its individual MOT history, mileage verification, and predicted costs.
About the 2021 BMW M5 CS AUTO
The 2021 BMW M5 CS AUTO is a premium performance with a 4395cc petrol engine. 56 of these vehicles were MOT tested in 2024, making it a rare model on UK roads. It sits in the bottom 86% of 2021 cars for MOT pass rates.
With an average of 11,098 miles at 3 years old, BMW M5 CS AUTO owners tend to use this car less than the typical driver. Very low mileage could mean the car has been garaged or used only for short trips, which can cause its own issues like battery drain and moisture buildup.
2021 BMW M5 CS 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 M5 CS AUTO?
Total estimated annual running cost is £2,187 (£182/month), broken down as £1592 fuel, £190 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 2021 BMW M5 CS 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 56 tests in our data, these figures should be treated as indicative rather than definitive.
Alternatives to the 2021 BMW M5 CS 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:
- MERCEDES C (2019) 91% pass rate (+3%) from 52,838 tests
- PORSCHE CAYENNE (2019) 95% pass rate (+7%) from 9,063 tests
- PORSCHE 911 (2019) 97% pass rate (+9%) from 7,188 tests
- AUDI A6 (2020) 94% pass rate (+6%) from 3,470 tests