Mercedes-Benz CLS C218
Weaknesses, engine ratings and buying advice
Generations
Engine Overview
The Mercedes-Benz CLS C218 is available with 3 engine variants — from 252 to 585 hp.
The Mercedes-Benz CLS 350 (Petrol, 306 PS) has the M276 (3.0-3.5L V6) — rated: "Be Careful", 10 known weaknesses.
The Mercedes-Benz CLS 400 (Petrol, 333 PS) has the M276 (3.0-3.5L V6) — rated: "Be Careful", 10 known weaknesses.
The Mercedes-Benz CLS 63 AMG (Petrol, 525 PS) has the M157 (5.5L V8 BiTurbo) — rated: "Stay Away!", 11 known weaknesses.
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Vehicle Weaknesses
| Weakness | Cost | |
|---|---|---|
| Brake Pads Squeal Chronically Brake pads squeal persistently on many C218 — repeated replacements do not solve the problem. Particularly pronounced on the large AMG brake systems due to design. Symptoms: Squealing when braking at low speeds, especially in the morning and in wet conditions. Persists even after multiple pad and disc replacements. | Medium |
Alternatives
Known Problems and Issues
A total of 28 weaknesses have been documented for the Mercedes-Benz CLS C218 (2010–2018) — 21 engine-related and 7 vehicle-related. One problem engine: M157 (5.5L V8 BiTurbo). Typical issues affect Brakes, Interior, Gearbox, Body.
CLS (M276, 2011–2014) — Be Careful: Oil cooler leaking in the V-block, Camshaft adjuster leaking — wiring harness contaminated, Piston slap (early 3.5L variants). Power: 306 PS.
CLS (M157, 2011–2017) — Stay Away!: Timing Chain Stretch — M157 BiTurbo V8, Oil Consumption from Piston Ring Wear, High-Pressure Fuel Pump Fails — No Fuel Pressure. Power: 525 PS.
CLS (M276, 2014–2018) — Be Careful: Oil cooler leaking in the V-block, Camshaft adjuster leaking — wiring harness contaminated, Piston slap (early 3.5L variants). Power: 333 PS.
What to watch out for with the Mercedes-Benz CLS? See the detailed listing of all engine and vehicle weaknesses in the sections above.
Frequently Asked Questions
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Last updated: February 2026 · All information without guarantee