MERCEDES GLC 300 AMG LINE PREM + 4M A (2020)
Running costs, common problems, and reliability data based on 1,013 real MOT tests in 2024.
MOT Pass Rate
95%
Total Tests (2024)
1,013
Avg Mileage
28,126 mi
Est. Annual Cost
£1,772
Is the 2020 MERCEDES GLC 300 AMG LINE PREM + 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 + 4M As from 2020 passed their MOT first time in 2024. That's based on 1,013 tests across the UK. The average mileage at this age is 28,126 miles.
How does the 2020 MERCEDES GLC 300 AMG LINE PREM + 4M A compare?
Mileage Analysis
The average 2020 MERCEDES GLC 300 AMG LINE PREM + 4M A has 28,126 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 MERCEDES GLC 300 AMG LINE PREM + 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 + 4M A by Year
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About the 2020 MERCEDES GLC 300 AMG LINE PREM + 4M A
The 2020 MERCEDES GLC 300 AMG LINE PREM + 4M A is a family car with a 1991cc hybrid engine. 1,013 of these vehicles were MOT tested in 2024, making it a reasonably common sight on UK roads. It ranks in the top 18% of all 2020 cars for reliability.
With an average of 28,126 miles at 4 years old, MERCEDES GLC 300 AMG LINE PREM + 4M A owners drive about as much as the UK average.
2020 MERCEDES GLC 300 AMG LINE PREM + 4M A Fuel Costs
The 1991cc hybrid 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 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 2020 MERCEDES GLC 300 AMG LINE PREM + 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.
MERCEDES GLC 300 AMG LINE PREM + 4M A Reliability Trend
The MERCEDES GLC 300 AMG LINE PREM + 4M A has maintained consistent MOT pass rates across model years, varying by only 1 percentage points.
Buying a Used 2020 MERCEDES GLC 300 AMG LINE PREM + 4M A
At 4 years old, the MERCEDES GLC 300 AMG LINE PREM + 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 + 4M A
The MERCEDES GLC 300 AMG LINE PREM + 4M A is actually the most reliable option among similar hybrid family cars from this era. Here are comparable hybrid cars with similar engines:
- MERCEDES C (2018) 90% pass rate (-5%) from 62,138 tests
- TOYOTA YARIS (2019) 93% pass rate (-2%) from 41,554 tests
- MINI COOPER S (2019) 92% pass rate (-3%) from 33,682 tests
- LAND ROVER RANGE ROVER SPORT (2019) 94% pass rate (-1%) from 33,069 tests