Used car guide

2024 Mercedes-Benz C-Class: known problems and what to check

Cars registered in 2024 haven’t had their first MOT yet (it’s due at 3 years old), so there are no MOT results to show. Here’s what we do know about the 2024 Mercedes-Benz C-Class, and what to check before you buy one.

4,764on the UK register at the end of 2025
2027first MOT due
Dieselmost common fuel (also petrol)
1known fault listed below

Known faults on the 2024 Mercedes-Benz C-Class

Reported by owners, mechanics and buying guides for this model and age. Check which engine the car has, as some apply to one engine only.

  • Poor reliability record

    All engines

    In What Car?'s survey, 43% of these C-Classes had a fault, with problems in the air con, engine, fuel system, gearbox and electrics. Many left the car undriveable.

    At the viewing: Check every warning light goes out, and test the air con and all the electrics.

    Source: What Car?: Mercedes C-Class (2021 on) reliability

What to check on a 2024 car

  • Warranty left

    Ask for the date it was first registered and check how much of the maker’s warranty is left, and that it transfers to you. Electric and hybrid batteries usually have a longer, separate warranty.

  • Servicing

    Servicing on time with the maker’s schedule keeps the warranty valid. Ask for the service book or the dealer’s digital record.

  • Finance

    Nearly new cars are often still on finance. A history check shows outstanding finance, and whether it has been written off or stolen.

  • Recalls

    Ask whether any recall work has been done, and check the reg on GOV.UK’s free recall checker.

  • Logbook (V5C)

    The name and address should match the seller, and the VIN on the V5C should match the car.

Check for recalls on GOV.UK

Looking at a Mercedes-Benz C-Class?

Check the actual car: tax, ULEZ, fuel costs and what to ask the seller. Free, no sign-up.

Other years

Every year of the Mercedes-Benz C-Class compared

YearMOT testsMost flagged
2026–Too new for MOT data
2025–Too new for MOT data
2023380Tyres 16%
20224,795Tyres 26%
202111,663Tyres 27%
202030,441Tyres 29%
201973,990Tyres 29%
201884,961Tyres 30%
2017118,916Tyres 30%
2016110,990Tyres 30%
2015103,655Tyres 30%
201477,294Tyres 31%
201372,996Brakes 31%
201281,468Brakes 39%
201160,864Brakes 39%
201042,612Brakes 39%
200941,744Brakes 41%
200844,156Suspension 42%
200739,195Suspension 48%
200631,275Suspension 55%
200527,259Suspension 57%
200420,438Suspension 57%
200314,253Suspension 53%
20027,932Suspension 48%
20014,263Suspension 47%
20001,993Suspension 41%
19992,498Suspension 36%
19982,759Suspension 38%
19972,187Suspension 44%
19961,272Suspension 37%
1995970Brakes 33%
1994779Suspension 37%
1993–Too few tests

Where this comes from: how many are on the road is from the Department for Transport’s vehicle licensing statistics (DVLA records), counted by the year each car was first registered. Known faults are from UK buying guides, in our own words, with links. How we score