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Mercedes-Benz · Luxury · 2010–2018 Custom Search

Mercedes-Benz CLS C218

Weaknesses, engine ratings and buying advice

2.0 / 5.0 · Based on 2 engine variants

Generations


Engine Overview

The Mercedes-Benz CLS C218 is available with 3 engine variants — from 252 to 585 hp.

CLS 350 · Petrol· 306 PS
2011 2014
Be Careful 10 weaknesses
CLS 400 · Petrol· 333 PS
2014 2018
Be Careful 10 weaknesses
CLS 63 AMG · Petrol· 525 PS
2011 2017
Stay Away! 11 weaknesses

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

WeaknessCost
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

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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

What problems and weaknesses does the Mercedes-Benz CLS C218 have? +
The Mercedes-Benz CLS C218 has 21 known engine weaknesses and 7 vehicle weaknesses.
What should I look for when buying a used Mercedes-Benz CLS C218? +
faq.watch_a_avoid
Which engine is recommended? +
Be careful: M276 (3.0-3.5L V6). No engine is rated 'Good Choice'. The most fun to drive is the M157 (5.5L V8 BiTurbo). Problem engine: M157 (5.5L V8 BiTurbo) — stay away!
Which Mercedes-Benz CLS C218 engine is the most fun? +
The {code} ({displacement}) offers the most driving fun in the Mercedes-Benz CLS C218 — rated: "Fun to Drive!". {description} CLS 63 AMG C218: 525 hp, 700 Nm from 1,700 rpm. Distinctive but never intrusive V8 sound — not a loud car. 1.9 tonnes can be moved with remarkable agility on winding country roads, the electromechanical steering relays commands with pinpoint accuracy. A tiny torque hole under abrupt kickdown — imperceptible in daily use. 700 Nm let the Swabian thunder machine slide out with great satisfaction.
Is the Mercedes-Benz CLS C218 worth buying used? +
Caution is advised with the Mercedes-Benz CLS C218 — 1 of 2 engine variants are rated 'Stay Away!'. The engine choice is crucial.
What horsepower variants are available for the Mercedes-Benz CLS C218? +
The Mercedes-Benz CLS C218 is available with engine variants from 252 to 585 hp. Petrol: M276 (3.0-3.5L V6), M157 (5.5L V8 BiTurbo).

Last updated: February 2026 · All information without guarantee