Mercedes Benz Amg C 43 Edition Prem + 4m A (2021)

144 real MOT outcomes analysed • 88.9% first-time pass rate

2021 Mercedes Benz Amg C 43 Edition Prem + 4m A

CarHunch analysed 144 real MOT records for the 2021 Mercedes Benz Amg C 43 Edition Prem + 4m A. This breakdown of actual test outcomes — pass rates, defect profiles, mileage data — isn't published anywhere else.

This 2021 AMG C 43 is a reliably robust performer, with an 88.9% first-time pass rate that sits nearly 9 percentage points above the UK average—though the 18.8% of vehicles that have experienced a dangerous defect is worth noting if you're considering a high-mileage example. The petrol engine shows no weakness here, maintaining that same 88.8% pass rate across the cohort.

At just over 29,000 miles median, these cars are still relatively young with modest use, yet they're already averaging 1.3 advisories each—suggesting minor wear items are beginning to surface. The low failure rate of 0.33 per vehicle indicates that most issues caught are small fixes rather than structural problems, so budget for routine maintenance and checks on suspension and trim rather than expecting major engine or gearbox work.

Average reliability 8.9% above UK average
88.9%
pass MOT first time
UK average: ~80%
29,033
typical mileage
21,670–35,705 middle half
18.8%
ever had a dangerous defect
recorded at any MOT
0.33
avg MOT failures per car
over 2.6 tests on record

What to check before buying a 2021 Mercedes Benz Amg C 43 Edition Prem + 4m 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 Amg C 43 Edition Prem + 4m A

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

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Pass Rate by Fuel Type

Fuel type Vehicles Pass rate Avg failures
Petrol (99%) 142 88.8% 0.33
Other (1%) 2 100% 0

Mileage Distribution

Most 2021 Mercedes Benz Amg C 43 Edition Prem + 4m 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.

21,670
low mileage
29,033
typical
35,705
high mileage

Half of all 2021 Mercedes Benz Amg C 43 Edition Prem + 4m A vehicles fall between 21,670 and 35,705 miles.

2021 Mercedes Benz Amg C 43 Edition Prem + 4m A — Still on the Road

Strong survival — 138 vehicles still getting MOTs in 2025, 99% of the peak.

11 138 2023 2025

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

2.6
Avg MOT tests per vehicle
0.33
Avg failures per vehicle
1.3
Avg advisories per vehicle

Found a specific Mercedes Benz Amg C 43 Edition Prem + 4m A?

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

UK