Used car guide

2020 Mercedes-Benz CLA: petrol or diesel?

Petrol, diesel and hybrid versions go wrong in different ways, so each has its own figures from the MOTs these cars had during 2023–2025. Pick the one you’re looking at: the fuel is on the logbook and in the car’s MOT history.

Petrol 84% pass first time (all 2020 cars: 87%) Nothing stands out above the usual rate 15,445 MOTsSee the petrol guide › Diesel 86% pass first time (all 2020 cars: 87%) Nothing stands out above the usual rate 4,222 MOTsSee the diesel guide › Hybrid 88% pass first time (all 2020 cars: 87%) Nothing stands out above the usual rate 2,702 MOTsSee the hybrid guide ›

Known faults on every 2020 Mercedes-Benz CLA

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.

  • Seven recalls: airbag, turbo oil line, gearbox, ECU

    Some cars

    Recalls covered a driver's airbag that might not be bolted down, a leaking turbo oil line, a gearbox that might not select Drive or Reverse, an engine ECU contact, radar software, the air con refrigerant and a generator gas line.

    At the viewing: Ask a Mercedes dealer to check the VIN for outstanding recalls.

    Source: What Car?: used Mercedes CLA (2019 on) reliability

Looking at a Mercedes-Benz CLA?

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Other years

Every year of the Mercedes-Benz CLA compared

YearMOT testsMost flagged
2026–Too new for MOT data
2025–Too new for MOT data
2024–Too new for MOT data
2023718Tyres 13%
202211,836Tyres 28%
202119,309Tyres 30%
201924,621Tyres 31%
201824,892Tyres 33%
201724,590Tyres 34%
201622,940Tyres 33%
201520,524Tyres 33%
201412,973Tyres 33%
20136,330Tyres 34%