Should I check the MOT history before buying a 2020 Mercedes Benz C?

Yes. Look for recurring advisories — slow-building issues like corrosion or brake wear patterns show up years before they become failures. A full MOT history analysis will highlight patterns that a single test result won't reveal.

What corrosion should I look for when inspecting a 2020 Mercedes Benz C?

Check brake pipes, sills, subframes, and chassis legs. Surface rust is normal at this age; structural rust is a serious problem that is expensive to fix and can fail an MOT.

How are tyres and brakes typically on a 2020 Mercedes Benz C?

Tyres and brakes are the most common advisory items on vehicles of this age. Budget for replacement if they are near the limit, and factor this into your offer price.

Is the 2020 Mercedes Benz C reliable?

Based on MOT data from 7,387 vehicles, the 2020 Mercedes Benz C has a first-time MOT pass rate of 91%, indicating generally reliable for its class. Always check the full MOT history of any specific vehicle before buying.

What are common problems with the 2020 Mercedes Benz C?

The most frequently recorded MOT issues on the 2020 Mercedes Benz C are: Offside Rear Tyre worn close to legal limit/worn on edge (28.3% of vehicles), Nearside Rear Tyre worn close to legal limit/worn on edge (27.8% of vehicles), Nearside Front Tyre worn close to legal limit/worn on edge (20% of vehicles). These figures are based on actual MOT test records — search a specific registration on CarHunch to see its individual history.

Do I need an HPI check when buying a 2020 Mercedes Benz C?

Yes. The MOT history will not show outstanding finance, insurance write-offs, or stolen status. An HPI check covers these areas and should be part of any used car purchase.

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Mercedes Benz C (2020)

7,387 real MOT outcomes analysed • 91% first-time pass rate

2020 Mercedes Benz C

CarHunch analysed 7,387 real MOT records for the 2020 Mercedes Benz C. Real test outcomes — pass rates, defect profiles, mileage data — from verified DVLA records. Updated as new MOTs are recorded.
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AI Analysis Reliability Overview Common Issues Check a Specific Reg Buyer's Checklist Pass Rate by Fuel Mileage Distribution Still on the Road MOT Averages Colour Breakdown Compare Models

The 2020 Mercedes-Benz C is a genuinely reliable proposition, passing its first MOT 11 percentage points above the UK average at 91%, with diesel and petrol variants performing almost identically around 90.4–90.6% and the hybrid electric version nudging ahead at 92%. However, nearly one in five of these cars (18.9%) have recorded a dangerous defect at some point, so thorough pre-purchase inspection is essential.

At 35,860 miles median mileage for a four-year-old car, these are well-used examples, yet they average just 0.39 failures per vehicle—suggesting the breed tolerates hard use reasonably well. With 2.6 advisories per car typical, expect minor wear items rather than structural problems, so budget for routine maintenance but don't anticipate major repairs; have any used example fully inspected by a Mercedes specialist before purchase to catch potential electrical or suspension issues early.

The 2020 Mercedes Benz C passes its MOT first time at roughly the UK average rate (91%) — 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

91%

UK average ~80%

Better than average

Dangerous (ever)

18.9%

At least once in MOT history

Check this vehicle

Avg failures / car

0.39

Over 3.5 tests on record

Low

Typical mileage

36k

Middle half: 26k–48k

For context

✅ Good baseline reliability. A 91% 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 2.6 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 7,387 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?

What tends to go wrong

Across 7,387 vehicles — figures show how many had each issue flagged at least once in their MOT history.

Tyre wear 28.3%

Offside Rear Tyre worn close to legal limit/worn on edge · Nearside Rear Tyre worn close to legal limit/worn on edge · Nearside Front Tyre worn close to legal limit/worn on edge · …

Budget for a full set — on a vehicle this age, tyres are expected consumables. An inspection will confirm how much is left.

Brake wear 17.9%

Rear Brake pad(s) wearing thin · Front Brake pad(s) wearing thin · Offside Rear Brake pad(s) wearing thin

Ask the seller when brakes were last serviced. If they don't know, factor in the cost.

Other issues 5.1%

Windscreen damaged but not adversely affecting driver's view · Nearside Rear Child Seat fitted not allowing full inspection of adult belt

Lighting 4%

Rear Prop shaft flexible coupling slightly deteriorated

Usually cheap to fix. Worth confirming all lights work before collecting.

Data covers a 3-year window centred on 2020.

See this vehicle's full MOT history & AI hunches

Spot recurring advisories, hidden issues, and how it compares to 7,387 Mercedes Benz C cars.

Before you buy a 2020 Mercedes Benz C

Based on MOT data from 7,387 vehicles — here's what to check.

📋 Check the full MOT history. 18.9% 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 →
📄 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 Get 20% off via CarHunch

Pass Rate by Fuel Type

Fuel type	Vehicles	Pass rate	Avg failures
Diesel (44%)	3,277	90.6%	0.41
Hybrid Electric (Clean) (33%)	2,426	92%	0.35
Petrol (23%)	1,681	90.4%	0.43

Colour Breakdown

Based on 667,977 Mercedes Benz C vehicles registered in the UK — across all years. From DVLA registration records.

Silver 34.7%

231,844

Black 24.7%

164,730

Blue 14.6%

97,214

White 9.6%

64,104

Grey 9.1%

60,907

Red 4.2%

28,290

Green 1.9%

12,661

Beige 0.4%

2,836

Purple 0.3%

1,844

Gold 0.2%

1,650

Brown 0.1%

994

Orange 0.1%

903

Mileage Distribution

Most 2020 Mercedes Benz C 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.

35,860

typical

26,214

low mileage

48,288

high mileage

Half of all 2020 Mercedes Benz C vehicles fall between 26,214 and 48,288 miles.

Is the mileage you're seeing normal?

✓ Under 26,214 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.

✓ 26,214–48,288 miles — normal for age. This is where most 2020 Mercedes Benz Cs sit.

⚠ Over 65,188 miles — higher than typical. Not necessarily a problem, but check service history and look out for advisory build-up on tyres and brakes.

2020 Mercedes Benz C — Still on the Road

Almost all 2020 Mercedes Benz Cs are still on the road.

Strong survival — 6,943 vehicles still getting MOTs in 2025, 98% 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

3.5

Avg MOT tests per vehicle

0.39

Avg failures per vehicle

2.6

Avg advisories per vehicle

Other model years — Mercedes Benz C: All C years → Which year to buy? →

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Average reliability — agree?