MERCEDES GLC 300 AMG LINE PREM + 4M A (2019)
Running costs, reliability data, and common problems from 458 real MOT tests.
Annual Cost
£1,777
£148/month
MOT Pass Rate
94%
Excellent
Road Tax
£195
Flat rate/year
Insurance
Grp 18-32
1991cc Petrol
Great Choice
94% pass rate, £1777/year to run. 12 points above average.
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Annual Running Costs
~36 mpg
Flat rate (post-2017)
Low estimate due to excellent reliability
Based on 7,400 miles/year (UK average), current fuel prices, and repair likelihood from MOT data. Insurance not included.
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Reliability Verdict
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 7 years old, 94% of MERCEDES GLC 300 AMG LINE PREM + 4M As from 2019 passed their MOT first time in 2026. That's based on 458 tests across the UK. The average mileage at this age is 31,806 miles.
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How Does It Compare?
Mileage Analysis
31,806
Average miles
51,800
Expected for age
The average 2019 MERCEDES GLC 300 AMG LINE PREM + 4M A has 31,806 miles on the clock, which is below the expected 51,800 miles for a 7-year-old car. This suggests lighter use than average, which generally means less wear on major components.
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Best Year to Buy?
The most reliable year is the 2020 model with a 95% MOT pass rate, while the 2019 model has the lowest at 94%. Consider a different year if reliability is a priority.
MERCEDES GLC 300 AMG LINE PREM + 4M A by Year
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About the 2019 MERCEDES GLC 300 AMG LINE PREM + 4M A
The 2019 MERCEDES GLC 300 AMG LINE PREM + 4M A is a family car with a 1991cc petrol engine. 458 of these vehicles were MOT tested in 2026, making it a less common model in the UK market. It ranks in the top 22% of all 2019 cars for reliability.
With an average of 31,806 miles at 7 years old, MERCEDES GLC 300 AMG LINE PREM + 4M A owners tend to use this car less than the typical driver.
2019 MERCEDES GLC 300 AMG LINE PREM + 4M A Fuel Costs
The 1991cc 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 2019 MERCEDES GLC 300 AMG LINE PREM + 4M A?
Total estimated annual running cost is £1,777 (£148/month), broken down as £1327 fuel, £195 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 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 2019 MERCEDES GLC 300 AMG LINE PREM + 4M A
At 7 years old, this is a solid used buy if you find one with good service history. Depreciation has levelled off, so you won't lose much more value. Focus on condition over mileage.
Common Issues to Watch For
Based on the 2019 MERCEDES GLC 300 AMG LINE PREM + 4M A's fuel type, age, and engine size, these are the most likely problem areas to check.
Suspension Wear
Medium riskShock absorbers, springs, and anti-roll bar links typically need attention around this age. Listen for clunks over bumps and check for uneven tyre wear.
Service History
Low riskAlways request a full service history. Regular servicing is the single best indicator of how well a car has been maintained, regardless of mileage.
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