Mercedes-Benz CLS (C218)
The second-generation Mercedes-Benz CLS (C218) is a refined and stylish four-door coupé (and stunning Shooting Brake) that shares most of its reliable mechanical components with the E-Class W212. Positioned to offer the practicality of a saloon with the swooping elegance of a coupe, it commands a premium over the E-Class but holds its value well in the UK market. Overall, it is highly reliable and makes for an exceptional long-distance cruiser. However, diesel emissions hardware, Airmatic suspension on higher trims, and 7G-Tronic gearbox issues are the main watch-outs, making it perfect for style-conscious executives.
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Common Faults & Reliability
These are the most common documented problems for the Mercedes-Benz CLS (C218), sorted by their typical impact and frequency.
NOx sensor and AdBlue system faults
medium severityBlueTEC diesel models regularly trigger engine lights, limp mode or no-restart countdowns when NOx sensors or AdBlue heaters fail.
Airmatic air suspension leaks
high severityAir springs leak and compressors wear out, causing the car to sag on one corner and throw suspension warnings.
7G-Tronic conductor plate failure
medium severityThe 7-speed automatic gearbox conductor plate can fail, causing harsh shifts, limp mode and gear reading errors.
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