Mercedes Benz Glc 300 Sport 4matic Auto (2020)
2020 Mercedes Benz Glc 300 Sport 4matic Auto
CarHunch analysed 542 real MOT records for the 2020 Mercedes Benz Glc 300 Sport 4matic Auto. This breakdown of actual test outcomes — pass rates, defect profiles, mileage data — isn't published anywhere else.
This GLC 300 is a reliable performer, with an 82.2% first-time pass rate that edges above the UK average of 80%, and only 5.9% of vehicles ever developing dangerous defects—well below concerning levels. The hybrid variant (which makes up 511 of the 542 cars analysed) performs marginally better at 82.9%, suggesting the electrified powertrain is holding up well.
At nearly 30,000 miles on average, these 2020 models show typical mileage for their age, and the low failure rate of 0.22 per vehicle indicates the mechanicals are sound. The 1.3 advisories per car suggest minor wear items crop up, so when shopping used, have a pre-purchase inspection focus on suspension, brakes, and fluid seals rather than expecting major engine problems.
What to check before buying a 2020 Mercedes Benz Glc 300 Sport 4matic Auto
Practical pre-purchase checks for this age and model.
- 📋 Check the full MOT history. Look for recurring advisories — slow-building issues like corrosion or brake wear patterns show up years before they become failures. Enter the reg below for a full AI analysis.
- 🔍 Inspect for corrosion in person. Brake pipes, sills, subframes, and chassis legs. Surface rust is normal at this age; structural rust is a serious problem that's expensive to fix and can fail an MOT.
- 🛞 Check tyres and brakes. The most common advisory items at this age. Budget for replacement if they're near the limit — factor this into your offer price.
- 📄 Run an HPI check. The MOT history won't show outstanding finance, insurance write-offs, or stolen status — an HPI check will.
Before you buy a Mercedes Benz Glc 300 Sport 4matic Auto
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Pass Rate by Fuel Type
| Fuel type | Vehicles | Pass rate | Avg failures |
|---|---|---|---|
| Hybrid Electric (Clean) (94%) | 511 | 82.9% | 0.22 |
| Petrol (5%) | 27 | 67% | 0.3 |
| Other (1%) | 3 | 83.3% | 0.33 |
| Gas Diesel (0%) | 1 | 100% | 0 |
Mileage Distribution
Most 2020 Mercedes Benz Glc 300 Sport 4matic Auto vehicles sit in the blue band. If the car you're looking at is outside it, it's either unusually low or high mileage for its age.
Half of all 2020 Mercedes Benz Glc 300 Sport 4matic Auto vehicles fall between 19,986 and 36,208 miles.
2020 Mercedes Benz Glc 300 Sport 4matic Auto — Still on the Road
Strong survival — 463 vehicles still getting MOTs in 2025, 99% of the peak.
Based on vehicles from this manufacture year that had at least one MOT test in each calendar year. Data from 2023–2025.
MOT History Averages
Found a specific Mercedes Benz Glc 300 Sport 4matic Auto?
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Other model years — Mercedes Benz Glc 300 Sport 4matic Auto: