MERCEDES GLC 300 AMG LINE 4MATIC AUTO (2020)
Running costs, common problems, and reliability data based on 2,489 real MOT tests in 2024.
MOT Pass Rate
94%
Total Tests (2024)
2,489
Avg Mileage
32,443 mi
Est. Annual Cost
£1,772
Is the 2020 MERCEDES GLC 300 AMG LINE 4MATIC AUTO reliable?
Excellent reliability. Very few MOT failures. That's 12 points above the national average of 82%. It also outperforms the MERCEDES brand average of 87%.
At 4 years old, 94% of MERCEDES GLC 300 AMG LINE 4MATIC AUTOs from 2020 passed their MOT first time in 2024. That's based on 2,489 tests across the UK. The average mileage at this age is 32,443 miles.
How does the 2020 MERCEDES GLC 300 AMG LINE 4MATIC AUTO compare?
Mileage Analysis
The average 2020 MERCEDES GLC 300 AMG LINE 4MATIC AUTO has 32,443 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 4MATIC 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 GLC 300 AMG LINE 4MATIC AUTO by Year
Checking a specific MERCEDES GLC 300 AMG LINE 4MATIC AUTO?
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About the 2020 MERCEDES GLC 300 AMG LINE 4MATIC AUTO
The 2020 MERCEDES GLC 300 AMG LINE 4MATIC AUTO is a family car with a 1991cc hybrid engine. 2,489 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 32,443 miles at 4 years old, MERCEDES GLC 300 AMG LINE 4MATIC AUTO owners drive about as much as the UK average.
2020 MERCEDES GLC 300 AMG LINE 4MATIC AUTO 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 4MATIC AUTO?
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 94% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.
MERCEDES GLC 300 AMG LINE 4MATIC AUTO Reliability Trend
The MERCEDES GLC 300 AMG LINE 4MATIC AUTO has maintained consistent MOT pass rates across model years, varying by only 1 percentage points.
Buying a Used 2020 MERCEDES GLC 300 AMG LINE 4MATIC AUTO
At 4 years old, the MERCEDES GLC 300 AMG LINE 4MATIC 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 MERCEDES GLC 300 AMG LINE 4MATIC AUTO
The MERCEDES GLC 300 AMG LINE 4MATIC AUTO 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 (-4%) from 62,138 tests
- TOYOTA YARIS (2019) 93% pass rate (-1%) from 41,554 tests
- MINI COOPER S (2019) 92% pass rate (-2%) from 33,682 tests
- LAND ROVER RANGE ROVER SPORT (2019) 94% pass rate (same) from 33,069 tests