MERCEDES B 250 AMG LINE PREMIUM E AUTO (2021)
Running costs, common problems, and reliability data based on 179 real MOT tests in 2024.
MOT Pass Rate
92%
Total Tests (2024)
179
Avg Mileage
27,477 mi
Est. Annual Cost
£1,582
Is the 2021 MERCEDES B 250 AMG LINE PREMIUM E AUTO reliable?
Excellent reliability. Very few MOT failures. That's 10 points above the national average of 82%. It also outperforms the MERCEDES brand average of 87%.
At 3 years old, 92% of MERCEDES B 250 AMG LINE PREMIUM E AUTOs from 2021 passed their MOT first time in 2024. That's based on 179 tests across the UK. The average mileage at this age is 27,477 miles.
How does the 2021 MERCEDES B 250 AMG LINE PREMIUM E AUTO compare?
Mileage Analysis
The average 2021 MERCEDES B 250 AMG LINE PREMIUM E AUTO has 27,477 miles on the clock, which is above the expected 22,200 miles for a 3-year-old car. Higher-mileage cars often have more motorway miles, which is generally less harmful than stop-start urban driving.
Best year to buy a MERCEDES B 250 AMG LINE PREMIUM E AUTO?
The most reliable year is the 2020 model with a 97% MOT pass rate, while the 2021 model has the lowest at 92%. Consider a different year if reliability is a priority.
How much does a 2021 MERCEDES B 250 AMG LINE PREMIUM E 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.
MERCEDES B 250 AMG LINE PREMIUM E AUTO by Year
Checking a specific MERCEDES B 250 AMG LINE PREMIUM E AUTO?
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About the 2021 MERCEDES B 250 AMG LINE PREMIUM E AUTO
The 2021 MERCEDES B 250 AMG LINE PREMIUM E AUTO is a small family car with a 1332cc hybrid engine. 179 of these vehicles were MOT tested in 2024, making it a rare model on UK roads. Among all cars from 2021, the average MOT pass rate is 92%, and this model falls short of that benchmark.
With an average of 27,477 miles at 3 years old, MERCEDES B 250 AMG LINE PREMIUM E AUTO owners cover more miles than the average driver.
2021 MERCEDES B 250 AMG LINE PREMIUM E AUTO Fuel Costs
The 1332cc hybrid engine offers a reasonable balance between performance and economy. Expect around 42 mpg in mixed driving, which works out to roughly £1,137 per year at current hybrid prices of 142p per litre (based on 7,400 miles per year). As a hybrid, real-world fuel costs will vary significantly depending on how much electric-only driving you do.
What does it cost to own a 2021 MERCEDES B 250 AMG LINE PREMIUM E AUTO?
Total estimated annual running cost is £1,582 (£132/month), broken down as £1137 fuel, £190 road tax, £55 MOT, and £200 predicted repairs. The low repair estimate reflects the excellent 92% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.
Buying a Used 2021 MERCEDES B 250 AMG LINE PREMIUM E 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 MERCEDES B 250 AMG LINE PREMIUM E AUTO
If reliability is your priority, there are 3 similar cars with a higher MOT pass rate. Here are comparable hybrid cars with similar engines:
- TOYOTA YARIS (2019) 93% pass rate (+1%) from 41,554 tests
- MINI COOPER S (2019) 92% pass rate (same) from 33,682 tests
- VOLVO XC40 (2021) 93% pass rate (+1%) from 25,698 tests
- MINI COUNTRYMAN (2019) 93% pass rate (+1%) from 25,254 tests