Mercedes Benz

Mercedes Benz C 220 Amg Line Ngt Ed Prem D A (2021)

623 real MOT outcomes analysed • 90.9% first-time pass rate

2021 Mercedes Benz C 220 Amg Line Ngt Ed Prem D A

CarHunch analysed 623 real MOT records for the 2021 Mercedes Benz C 220 Amg Line Ngt Ed Prem D A. Real test outcomes — pass rates, defect profiles, mileage data — from verified DVLA records. Updated as new MOTs are recorded.
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This 2021 C 220 diesel is a solid performer, passing its MOT first time in 87.5% of cases—a clear 7.5 percentage points above the UK average of 80%—though the 16.2% that have recorded dangerous defects is worth noting if you're buying used. Petrol and diesel breakdowns aren't available here, but the overall reliability picture is reassuring for a premium saloon at this age.

At 33,000 miles median, these cars are running well within typical mileage for a three-year-old, which bodes well for component wear. The low failure rate of 0.29 per vehicle combined with modest advisories at 1.5 per car suggests electrics and sensors (typical for modern Mercedes) are the main watch-points rather than structural problems; when shopping, have any pre-purchase inspection flag the air suspension and battery condition specifically.

The 2021 Mercedes Benz C 220 Amg Line Ngt Ed Prem D A passes its MOT first time at roughly the UK average rate (90.9%) — solid but worth checking this vehicle's history carefully.

⚠️ Around 1 in 8 of these vehicles have had a dangerous MOT failure at some point — usually tyres or brakes, and often a one-off issue rather than a persistent problem. The group stats won't tell you which one you're looking at.
First-time pass
90.9%
UK average ~80%
Better than average
Dangerous (ever)
16.2%
At least once in MOT history
Check this vehicle
Avg failures / car
0.29
Over 2.4 tests on record
Low
Typical mileage
33k
Middle half: 24k–46k
For context
Good baseline reliability. A 90.9% first-time pass rate puts this well above the UK average — it's a well-sorted vehicle in this age bracket.
🔧 Expect consumable spend. An average of 1.5 advisories per vehicle tells you wear items (tyres, brakes) get flagged regularly. Budget for them — they're not surprises.
🔍 The dangerous defect figure is real. Most are one-off tyre failures or brake issues — not structural problems. But it's exactly why checking the individual vehicle's history is essential, not optional.

These stats describe 623 vehicles as a group. The specific vehicle you're looking at could be the one good example or the one outlier. Run its registration to find out.

Average reliability — agree?

See this vehicle's full MOT history & AI hunches

Spot recurring advisories, hidden issues, and how it compares to 623 Mercedes Benz C 220 Amg Line Ngt Ed Prem D A cars.

UK

Before you buy a 2021 Mercedes Benz C 220 Amg Line Ngt Ed Prem D A

Based on MOT data from 623 vehicles — here's what to check.

  • 📋 Check the full MOT history. 16.2% of these vehicles have had a dangerous defect recorded - recurring advisories often signal problems years before they become failures.
    Search the reg on CarHunch for the full MOT history, reliability stats and a free AI-powered analysis of that exact vehicle.
  • 🔍 Brake pipes, sills and subframes are the key areas on a vehicle this age — structural rust is hard to spot without getting underneath. A mechanic will check all of this before you commit, and give you a concrete basis to negotiate on price. Inspection ClickMechanic
  • 📄 Outstanding finance, insurance write-offs and clocking won't appear in the MOT records — a dedicated history check covers all of this. Our link gets you 20% off automatically. History carVertical Get 20% off via CarHunch

Colour Breakdown

Based on 629 Mercedes Benz C 220 Amg Line Ngt Ed Prem D A vehicles registered in the UK — across all years. From DVLA registration records.

Silver 67.6%
425
Black 16.2%
102
Grey 11.1%
70
Blue 3.7%
23
White 1.4%
9

Mileage Distribution

Most 2021 Mercedes Benz C 220 Amg Line Ngt Ed Prem D A vehicles sit in the blue band. If the vehicle you're looking at is outside it, it's either unusually low or high mileage for its age.

33,065
typical
24,352
low mileage
45,742
high mileage

Half of all 2021 Mercedes Benz C 220 Amg Line Ngt Ed Prem D A vehicles fall between 24,352 and 45,742 miles.

Is the mileage you're seeing normal?
Under 24,352 miles — lower than most. Could be great, or could be a vehicle that rarely moved. Check test frequency and mileage progression in the MOT history.
24,352–45,742 miles — normal for age. This is where most 2021 Mercedes Benz C 220 Amg Line Ngt Ed Prem D As sit.
Over 61,751 miles — higher than typical. Not necessarily a problem, but check service history and look out for advisory build-up on tyres and brakes.

2021 Mercedes Benz C 220 Amg Line Ngt Ed Prem D A — Still on the Road

Almost all 2021 Mercedes Benz C 220 Amg Line Ngt Ed Prem D As are still on the road.

Strong survival — 586 vehicles still getting MOTs in 2025, 100% of the peak.

42 586 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

2.4
Avg MOT tests per vehicle
0.29
Avg failures per vehicle
1.5
Avg advisories per vehicle
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Average reliability — agree?