BMW 840I AUTO (2020)
Running costs, common problems, and reliability data based on 4,056 real MOT tests in 2024.
MOT Pass Rate
93%
Total Tests (2024)
4,056
Avg Mileage
30,790 mi
Est. Annual Cost
£2,037
Is the 2020 BMW 840I AUTO reliable?
Excellent reliability. Very few MOT failures. That's 11 points above the national average of 82%. It also outperforms the BMW brand average of 88%.
At 4 years old, 93% of BMW 840I AUTOs from 2020 passed their MOT first time in 2024. That's based on 4,056 tests across the UK. The average mileage at this age is 30,790 miles.
How does the 2020 BMW 840I AUTO compare?
Mileage Analysis
The average 2020 BMW 840I AUTO has 30,790 miles on the clock, which is in line with the expected 29,600 miles for a 4-year-old car, suggesting normal everyday use.
How much does a 2020 BMW 840I 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 840I AUTO by Year
Checking a specific BMW 840I AUTO?
Enter the reg plate to see its individual MOT history, mileage verification, and predicted costs.
About the 2020 BMW 840I AUTO
The 2020 BMW 840I AUTO is a premium performance with a 2998cc petrol engine. 4,056 of these vehicles were MOT tested in 2024, making it a reasonably common sight on UK roads. Among all cars from 2020, the average MOT pass rate is 92%, and this model beats that benchmark.
With an average of 30,790 miles at 4 years old, BMW 840I AUTO owners drive about as much as the UK average.
2020 BMW 840I 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 2020 BMW 840I 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 93% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.
BMW 840I AUTO Reliability Trend
The BMW 840I AUTO has maintained consistent MOT pass rates across model years, varying by only 1 percentage points.
Buying a Used 2020 BMW 840I AUTO
At 4 years old, the BMW 840I AUTO offers good value with plenty of life remaining. Most manufacturer warranties will have expired, so a pre-purchase inspection is worth the cost.
Alternatives to the 2020 BMW 840I AUTO
The BMW 840I 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 (2018) 91% pass rate (-2%) from 40,272 tests
- LAND ROVER RANGE ROVER SPORT (2018) 93% pass rate (same) from 34,257 tests
- BMW X3 (2019) 92% pass rate (-1%) from 32,937 tests
- MERCEDES GLC (2019) 93% pass rate (same) from 30,341 tests