MERCEDES GLB 200 AMG LINE PREMIUM D A (2021)
Running costs, common problems, and reliability data based on 129 real MOT tests in 2024.
MOT Pass Rate
95%
Total Tests (2024)
129
Avg Mileage
33,974 mi
Est. Annual Cost
£1,482
Is the 2021 MERCEDES GLB 200 AMG LINE PREMIUM D A reliable?
Excellent reliability. Very few MOT failures. That's 13 points above the national average of 82%. It also outperforms the MERCEDES brand average of 87%.
At 3 years old, 95% of MERCEDES GLB 200 AMG LINE PREMIUM D As from 2021 passed their MOT first time in 2024. That's based on 129 tests across the UK. The average mileage at this age is 33,974 miles.
How does the 2021 MERCEDES GLB 200 AMG LINE PREMIUM D A compare?
Mileage Analysis
The average 2021 MERCEDES GLB 200 AMG LINE PREMIUM D A has 33,974 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.
How much does a 2021 MERCEDES GLB 200 AMG LINE PREMIUM D A 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 GLB 200 AMG LINE PREMIUM D A by Year
Checking a specific MERCEDES GLB 200 AMG LINE PREMIUM D A?
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About the 2021 MERCEDES GLB 200 AMG LINE PREMIUM D A
The 2021 MERCEDES GLB 200 AMG LINE PREMIUM D A is a family car with a 1950cc diesel engine. 129 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 beats that benchmark.
With an average of 33,974 miles at 3 years old, MERCEDES GLB 200 AMG LINE PREMIUM D A owners cover more miles than the average driver. High-mileage examples should be checked carefully for wear on suspension, brakes, and drivetrain components.
2021 MERCEDES GLB 200 AMG LINE PREMIUM D A Fuel Costs
The 1950cc diesel engine offers a reasonable balance between performance and economy. Expect around 48 mpg in mixed driving, which works out to roughly £1,037 per year at current diesel prices of 148p per litre (based on 7,400 miles per year).
What does it cost to own a 2021 MERCEDES GLB 200 AMG LINE PREMIUM D A?
Total estimated annual running cost is £1,482 (£124/month), broken down as £1037 fuel, £190 road tax, £55 MOT, and £200 predicted repairs. The low repair estimate reflects the excellent 95% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.
Buying a Used 2021 MERCEDES GLB 200 AMG LINE PREMIUM D A
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 GLB 200 AMG LINE PREMIUM D A
The MERCEDES GLB 200 AMG LINE PREMIUM D A is actually the most reliable option among similar diesel family cars from this era. Here are comparable diesel cars with similar engines:
- FORD FOCUS (2019) 89% pass rate (-6%) from 93,803 tests
- MERCEDES A (2019) 91% pass rate (-4%) from 89,588 tests
- FORD KUGA (2019) 91% pass rate (-4%) from 72,831 tests
- VOLKSWAGEN POLO (2019) 89% pass rate (-6%) from 65,751 tests