Mercedes Benz C 300 Amg Line Ed Prem D A (2020)
2020 Mercedes Benz C 300 Amg Line Ed Prem D A
CarHunch analysed 604 real MOT records for the 2020 Mercedes Benz C 300 Amg Line Ed Prem D A. This breakdown of actual test outcomes — pass rates, defect profiles, mileage data — isn't published anywhere else.
This 2020 C 300 is a solid performer on the MOT bench: its 87.9% first-time pass rate beats the UK average of 80%, and only 17.7% of vehicles have ever recorded a dangerous defect, which is reassuringly below the concerning threshold. The diesel variant clearly suits Mercedes' engineering, as these cars are holding up well to early testing.
With a median mileage of 36,464 miles for a four-year-old car, these are typically well-driven rather than thrashed examples, and the 0.37 average failures per vehicle suggests owners aren't facing serious structural problems. However, the 2.8 advisories per car indicate minor wear items—expect to budget for brake pads, fluid top-ups, and suspension tweaks—so have a pre-purchase inspection focus on the suspension and cooling system before committing.
What to check before buying a 2020 Mercedes Benz C 300 Amg Line Ed Prem D A
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 C 300 Amg Line Ed Prem D A
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Mileage Distribution
Most 2020 Mercedes Benz C 300 Amg Line Ed Prem D A 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 C 300 Amg Line Ed Prem D A vehicles fall between 26,686 and 47,166 miles.
2020 Mercedes Benz C 300 Amg Line Ed Prem D A — Still on the Road
Strong survival — 518 vehicles still getting MOTs in 2025, 94% of the peak.
Based on vehicles from this manufacture year that had at least one MOT test in each calendar year. Data from 2022–2025.
MOT History Averages
Found a specific Mercedes Benz C 300 Amg Line Ed Prem D A?
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Other model years — Mercedes Benz C 300 Amg Line Ed Prem D A: