Mercedes Benz C 300 Amg Line Ed Prem + E A (2021)

163 real MOT outcomes analysed • 82.3% first-time pass rate

2021 Mercedes Benz C 300 Amg Line Ed Prem + E A

CarHunch analysed 163 real MOT records for the 2021 Mercedes Benz C 300 Amg Line Ed Prem + E A. This breakdown of actual test outcomes — pass rates, defect profiles, mileage data — isn't published anywhere else.

Average reliability 2.3% above UK average
82.3%
pass MOT first time
UK average: ~80%
38,254
typical mileage
27,017–53,524 middle half
20.3%
ever had a dangerous defect
recorded at any MOT
0.41
avg MOT failures per car
over 2.7 tests on record

What to check before buying a 2021 Mercedes Benz C 300 Amg Line Ed Prem + E 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.
  • ⚠️ 20.3% of these vehicles have had a dangerous defect recorded. Enter the reg below — the full MOT history will show exactly what was flagged and whether it was resolved.
  • 📄 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 + E A

MOT history is one piece of the puzzle. These checks can reveal what CarHunch can't.

Inspection ClickMechanic Have a qualified mechanic check this car before you commit to buying

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Mileage Distribution

Most 2021 Mercedes Benz C 300 Amg Line Ed Prem + E 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.

27,017
low mileage
38,254
typical
53,524
high mileage

Half of all 2021 Mercedes Benz C 300 Amg Line Ed Prem + E A vehicles fall between 27,017 and 53,524 miles.

MOT History Averages

2.7
Avg MOT tests per vehicle
0.41
Avg failures per vehicle
1.7
Avg advisories per vehicle

Found a specific Mercedes Benz C 300 Amg Line Ed Prem + E A?

Enter the reg to see its individual MOT history, AI Hunches, and how it compares to this cohort.

UK