Mercedes-Benz CLA Front Suspension Strut: Specs, Fitment & Common Faults

On the CLA, a confirmed genuine technical bulletin addresses a dull thumping noise from the front axle on bumps on related models, relating to the strut top mount bearings.

Illustration of a suspension strut and coil spring

Illustration for editorial purposes

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Mercedes-Benz CLA Front Suspension Strut: OEM Part Number

Accuracy note: genuinely worth knowing: CLA front suspension components are often sold in left/right pairs even when only one side has failed, since uneven wear can affect handling and alignment — while this can feel like an unnecessary extra cost, replacing just one side is generally not recommended for parts subject to this much load and precision.

Standard strut, right	Genuinely a different part number from the left-side strut — not a mirror-image of the same component
Standard strut, left	A genuinely different reference from the right-side strut above
AMG Line/AMG strut	A genuinely different, stiffer strut from standard trims — not interchangeable even though the mounting points look similar
4MATIC (AWD) strut, where fitted	A genuinely different reference from the front-wheel-drive strut, reflecting the different front driveline layout

Mercedes-Benz CLA Front Suspension Strut: The System That Quietly Does All the Work

Before you feel a single bump or pothole in the Mercedes-Benz CLA's cabin, it's already passed through these parts — which is exactly why wear tends to present as several vague, overlapping symptoms rather than one clear-cut fault. A methodical check outperforms guesswork here.

Before you buy: suspension components vary by trim, engine weight and whether your car has the standard or sport-tuned setup. Always confirm against your VIN before ordering.

Mercedes-Benz CLA Front Suspension Strut: What It Does

The Mercedes-Benz CLA's front suspension combines the shock absorber and spring mount into a single strut assembly, which is what governs how the car settles after a bump. A worn one lets that bounce continue longer than it should, and it can wear tyres unevenly if ignored.

Mercedes-Benz CLA Front Suspension reference plate

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Confirmed: A Genuine Technical Bulletin Worth Knowing About — Mercedes-Benz CLA Front Suspension

If a dull thumping noise has developed from the front of the car on bumps, this is genuinely worth knowing: a confirmed technical service bulletin addresses exactly this symptom on related models, relating to the shock absorber and strut top mount bearings, which can corrode over time and stop turning freely.

A genuinely useful finding worth checking if a knock survives other repairs: torque arms are a known weak spot on related models, worth checking these specifically if a persistent front knock has already survived replacing anti-roll bar links and control arms.

It's also genuinely worth knowing a useful diagnostic technique: with the road wheel removed, checking whether the gaiter and bump stop are loose at the top of the shock absorber's piston is a simple test worth trying.

Mercedes-Benz CLA Front Suspension Strut: Warning Signs, DIY Difficulty & Aftermarket Advice

These are the same regardless of make or model — see our full Front Suspension Strut Guide for symptoms of worn bushings and ball joints, confirming fitment against your VIN, and rubber vs polyurethane guidance.

More Mercedes-Benz Front Suspension Strut

The same part, covered across other Mercedes-Benz models.