MERCEDES GLC 300 AMG LINE PREM DE 4M A (2020)
Running costs, common problems, and reliability data based on 624 real MOT tests in 2024.
MOT Pass Rate
95%
Total Tests (2024)
624
Avg Mileage
39,366 mi
Est. Annual Cost
£1,772
Is the 2020 MERCEDES GLC 300 AMG LINE PREM DE 4M 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 4 years old, 95% of MERCEDES GLC 300 AMG LINE PREM DE 4M As from 2020 passed their MOT first time in 2024. That's based on 624 tests across the UK. The average mileage at this age is 39,366 miles.
How does the 2020 MERCEDES GLC 300 AMG LINE PREM DE 4M A compare?
Mileage Analysis
The average 2020 MERCEDES GLC 300 AMG LINE PREM DE 4M A has 39,366 miles on the clock, which is above the expected 29,600 miles for a 4-year-old car. Higher-mileage cars often have more motorway miles, which is generally less harmful than stop-start urban driving.
How much does a 2020 MERCEDES GLC 300 AMG LINE PREM DE 4M 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 GLC 300 AMG LINE PREM DE 4M A by Year
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About the 2020 MERCEDES GLC 300 AMG LINE PREM DE 4M A
The 2020 MERCEDES GLC 300 AMG LINE PREM DE 4M A is a family car with a 1950cc petrol engine. 624 of these vehicles were MOT tested in 2024, making it a less common model in the UK market. It ranks in the top 19% of all 2020 cars for reliability.
With an average of 39,366 miles at 4 years old, MERCEDES GLC 300 AMG LINE PREM DE 4M A owners cover more miles than the average driver.
2020 MERCEDES GLC 300 AMG LINE PREM DE 4M A Fuel Costs
The 1950cc 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 2020 MERCEDES GLC 300 AMG LINE PREM DE 4M A?
Total estimated annual running cost is £1,772 (£148/month), broken down as £1327 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 2020 MERCEDES GLC 300 AMG LINE PREM DE 4M A
At 4 years old, the MERCEDES GLC 300 AMG LINE PREM DE 4M A 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 MERCEDES GLC 300 AMG LINE PREM DE 4M A
The MERCEDES GLC 300 AMG LINE PREM DE 4M A is actually the most reliable option among similar petrol family cars from this era. Here are comparable petrol cars with similar engines:
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- BMW 520D M SPORT MHEV AUTO (2021) 89% pass rate (-6%) from 3,423 tests
- BMW 320D M SPORT MHEV AUTO (2021) 91% pass rate (-4%) from 3,336 tests
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