MERCEDES GLC 300 AMG LNE PREM + DE 4M A (2020)
Running costs, common problems, and reliability data based on 74 real MOT tests in 2024.
MOT Pass Rate
96%
Total Tests (2024)
74
Avg Mileage
29,856 mi
Est. Annual Cost
£1,772
Is the 2020 MERCEDES GLC 300 AMG LNE PREM + DE 4M A reliable?
Excellent reliability. Very few MOT failures. That's 14 points above the national average of 82%. It also outperforms the MERCEDES brand average of 87%.
At 4 years old, 96% of MERCEDES GLC 300 AMG LNE PREM + DE 4M As from 2020 passed their MOT first time in 2024. That's based on 74 tests across the UK. The average mileage at this age is 29,856 miles.
How does the 2020 MERCEDES GLC 300 AMG LNE PREM + DE 4M A compare?
Mileage Analysis
The average 2020 MERCEDES GLC 300 AMG LNE PREM + DE 4M A has 29,856 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 LNE 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 LNE PREM + DE 4M A by Year
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About the 2020 MERCEDES GLC 300 AMG LNE PREM + DE 4M A
The 2020 MERCEDES GLC 300 AMG LNE PREM + DE 4M A is a family car with a 1950cc petrol engine. 74 of these vehicles were MOT tested in 2024, making it a rare model on UK roads. It ranks in the top 16% of all 2020 cars for reliability.
With an average of 29,856 miles at 4 years old, MERCEDES GLC 300 AMG LNE PREM + DE 4M A owners drive about as much as the UK average.
2020 MERCEDES GLC 300 AMG LNE 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 LNE 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 96% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.
Buying a Used 2020 MERCEDES GLC 300 AMG LNE PREM + DE 4M A
At 4 years old, the MERCEDES GLC 300 AMG LNE 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. Note: with only 74 tests in our data, these figures should be treated as indicative rather than definitive.
Alternatives to the 2020 MERCEDES GLC 300 AMG LNE PREM + DE 4M A
The MERCEDES GLC 300 AMG LNE 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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