Mercedes AMG GLC 63 4MATIC + Auto (2020)
Estimated running costs and MOT pass rates from 129 MOT tests in 2024.
Annual Cost
£2,413
£201/month
MOT Pass Rate
92%
Excellent
Road Tax
£200
Standard rate/year
Est. Insurance
Grp 35-50
3982cc Petrol
Great Choice
92% pass rate, £2,413/year to run. 10 points above average.
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Annual Running Costs
~30 mpg
Standard rate (from April 2017)
Low estimate due to excellent reliability
Estimates based on 7,400 miles/year (UK average), petrol at 174.57p a litre (GOV.UK weekly average, week of 19 October 2026), GOV.UK road tax rates and repair likelihood from MOT data. Insurance not included. Cars registered from April 2017 pay the £200 standard rate, plus £440 a year for five years (from the second year) if they cost over £40,000 new (over £50,000 for electric cars).
Reliability Verdict
Excellent reliability. Very few MOT failures. That's 10 points above the average of 82% across all models in our data. It also outperforms the Mercedes brand average of 87%.
92% of MOT tests on Mercedes AMG GLC 63 4MATIC + Autos from 2020 ended in a pass in 2024, when they were about 4 years old. That's based on 129 tests across the UK, retests included. The average mileage recorded at those tests was 29,397 miles.
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How Does It Compare?
Mileage Analysis
29,397
Average miles
29,600
Expected for age
The average 2020 Mercedes AMG GLC 63 4MATIC + Auto had 29,397 miles on the clock at its 2024 MOT, which is in line with the expected 29,600 miles for a 4-year-old car, suggesting normal everyday use.
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Mercedes AMG GLC 63 4MATIC + Auto by Year
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About the 2020 Mercedes AMG GLC 63 4MATIC + Auto
The 2020 Mercedes AMG GLC 63 4MATIC + Auto is a premium performance car. Our records list a 3982cc petrol engine, though engines vary between versions. 129 MOT tests were recorded on this model in 2024, making it a rare model on UK roads. Among all models from 2020, the average MOT pass rate is 92%, and this model matches that benchmark.
With an average of 29,397 miles recorded at its 2024 MOT tests, Mercedes AMG GLC 63 4MATIC + Auto owners drive about as much as the UK average.
2020 Mercedes AMG GLC 63 4MATIC + Auto Fuel Costs
The 3982cc petrol engine is on the larger side, so fuel won't be this car's strong point. Expect around 30 mpg in mixed driving, which works out to roughly £1,958 per year with petrol at 174.57p per litre (GOV.UK weekly average, week of 19 October 2026; based on 7,400 miles per year).
What does it cost to own a 2020 Mercedes AMG GLC 63 4MATIC + Auto?
Total estimated annual running cost is £2,413 (£201/month), broken down as £1,958 fuel, £200 road tax, £55 MOT, and £200 predicted repairs. The low repair estimate reflects the excellent 92% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.
Buying a Used 2020 Mercedes AMG GLC 63 4MATIC + Auto
At 6 years old, the Mercedes AMG GLC 63 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.
Common Issues to Watch For
These are typical issues for cars of this age, fuel type and engine size, not faults recorded on this model's MOT tests. Use them as a checklist when you view one.
Timing Chain / Belt
Watch outAt 6 years old, check whether the timing belt has been replaced (typically due every 5-7 years or 60,000-100,000 miles). A snapped belt can destroy the engine.
Oil Consumption
Low riskLarger petrol engines can develop higher oil consumption as they age. Check the oil level and look for blue smoke from the exhaust.
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.
Running Costs Compared
How the 2020 Mercedes AMG GLC 63 4MATIC + Auto stacks up against similar cars for estimated annual running costs, insurance group, and tax.
| Car | Pass Rate | Fuel/yr | Tax/yr | Est. Ins. Group | Total/yr |
|---|---|---|---|---|---|
| Mercedes AMG GLC 63 4MATIC + Auto(2020) | 92% | £1,958 | £200 | Grp 35-50 | £2,413 |
| Mercedes C(2019) | 91% | £1,958 | £200 | Grp 35-50 | £2,413same |
| Porsche Cayenne(2019) | 95% | £1,958 | £200 | Grp 35-50 | £2,413same |
| Porsche 911(2018) | 96% | £1,958 | £200 | Grp 35-50 | £2,413same |
| Audi A6(2020) | 94% | £1,958 | £200 | Grp 35-50 | £2,413same |
Estimates based on 7,400 miles/year, GOV.UK average pump prices for the week of 19 October 2026, GOV.UK road tax rates and MOT data. Insurance groups are our rough estimate from engine size, not official groups. Actual costs vary by driver, location, and usage.
Questions about the 2020 Mercedes AMG GLC 63 4MATIC + Auto
Is the 2020 Mercedes AMG GLC 63 4MATIC + Auto reliable?
Excellent reliability. Very few MOT failures. 92% of MOT tests on 2020 Mercedes AMG GLC 63 4MATIC + Autos ended in a pass, from 129 tests (DVSA MOT data for tests in 2024, retests included). That's 10 points above the average of 82% across all models in the same data.
How much does a 2020 Mercedes AMG GLC 63 4MATIC + Auto cost to run?
Our estimate is £2,413 a year (£201 a month): £1,958 fuel, £200 road tax, £55 MOT and £200 predicted repairs, based on 7,400 miles a year. Insurance is not included.
What is the MOT pass rate for a 2020 Mercedes AMG GLC 63 4MATIC + Auto?
92% of 129 MOT tests on the 2020 Mercedes AMG GLC 63 4MATIC + Auto ended in a pass (DVSA MOT data for tests in 2024, retests included). That ranks it 1424th of 2,554 models first registered in 2020 (bottom half).
What is the average mileage for a 2020 Mercedes AMG GLC 63 4MATIC + Auto?
The average mileage recorded at MOT tests on the 2020 Mercedes AMG GLC 63 4MATIC + Auto is 29,397 miles, which is in line with the expected 29,600 miles for a 4-year-old car, suggesting normal everyday use.
Related Mercedes Models
Explore other Mercedes cars or similar models in the same category.
Mercedes A
2019 · 1461cc Diesel
Mercedes C
2017 · 1991cc Hybrid
Mercedes A-Class
2017 · 1461cc Diesel
Mercedes C
2019 · 3982cc Petrol
Porsche Cayenne
2019 · 3996cc Petrol
Porsche 911
2018 · 3996cc Petrol
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