Model directory 
Mercedes-Benz: common problems and service schedules by model
24 verified faults across 4 models, from Brimly's Vehicle Knowledge Base — each checked by a human before publication. Below is every Mercedes-Benz model with its most serious known faults; open one for its problems by generation, the mileage they appear at and its service schedule.
- A-Class Watch for:
- 1.3 M282 oil consumption & carbon
- Dual-clutch shift harshness
- C-Class Watch for:
- 48V mild-hybrid / 12V battery electrical faults
- Diesel DPF / EGR clogging on short trips
- GLC Watch for:
- 48V mild-hybrid / 12V electrical faults
- Air suspension wear (where fitted)
- GLA Watch for:
- Diesel DPF / EGR clogging on short trips
- Dual-clutch (7G-DCT / 8G-DCT) low-speed behaviour
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