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Mercedes GLC Engine Mount and Gearbox Mount Replacement: OEM Parts, $830 Nett

A blue Mercedes GLC W253 came in with vibration through the cabin under acceleration. Inspection confirmed both the engine mount and gearbox mount had deteriorated. We replaced both with OEM Mercedes parts at $830 nett.

Job completed: August 2026

Blue Mercedes GLC W253 on the workshop lift at 1 Car Service Singapore with engine mount replacement in progress

Job completed: August 2026. Last updated: August 2026.

CarMercedes-Benz GLC W253
SymptomVibration through the cabin under acceleration, particularly on pull-away
Fault foundBoth engine mount and gearbox mount deteriorated and no longer absorbing drivetrain movement
Repair doneEngine mount and gearbox mount replaced with OEM Mercedes parts
PartsOEM Mercedes-Benz parts (part numbers A253 240 09 00 and A253 240 10 00)
Time takenCompleted in one visit
Cost$830 nett, all-in
WarrantyRoad tested before handover

What the owner reported

The owner of a blue Mercedes GLC W253 brought the car in with vibration through the cabin, particularly noticeable when pulling away from a stop or accelerating under load. The car was not making a knocking sound but there was a definite shunt and vibration that had developed gradually.

On a Mercedes GLC, this pattern is a common presentation of worn engine or gearbox mounts. The mounts are rubber components that absorb the constant movement and torque reaction of the engine and transmission. As they deteriorate, they allow the drivetrain to rock under load, and the movement transmits through the car body as vibration.

The owner wanted a clear diagnosis and a fixed price before committing.

OEM Mercedes GLC engine mount and gearbox mount parts in packaging, with part numbers A253 240 09 00 and A253 240 10 00

The car

The Mercedes-Benz GLC W253 is a compact luxury SUV produced from 2015 onward. It sits on the same MRA platform as the C-Class, with a turbocharged 2.0-litre petrol or diesel engine depending on the variant. The GLC is a well-built, comfortable car that holds its value well in Singapore.

Like all modern Mercedes models, the GLC uses hydraulic or rubber engine and gearbox mounts that are engineered for a specific service life. Over time and heat cycles, the rubber element hardens, cracks or separates from its bonded metal plates. Once this happens, the mount can no longer absorb drivetrain movement, and the vibration that the mount was isolating begins to pass into the car body.

Both the engine mount and gearbox mount on the W253 are accessible for replacement on a lift. OEM Mercedes parts are the correct choice: they match the original stiffness spec and restore the factory NVH (noise, vibration, harshness) characteristics.

What we found on inspection

With the car on the lift, we carried out a visual and physical inspection of the engine and gearbox mounts. Both showed deterioration.

The engine mount had hardened and developed visible cracking in the rubber element. The gearbox mount showed similar age-related deterioration. Both were allowing more drivetrain movement than the design specification permits.

We identified the OEM Mercedes part numbers for the W253 GLC: A253 240 09 00 for the engine mount and A253 240 10 00 for the gearbox mount. We quoted the owner $830 nett all-in for both mounts replaced with OEM parts.

No other faults were found on the inspection. The brakes, cooling system and transmission all checked out correctly on the XENTRY scan.

Blue Mercedes GLC W253 elevated on the workshop lift at 1 Car Service Singapore for engine mount inspection

Why GLC engine mounts wear out

Engine and gearbox mounts on a GLC are wear items. They are designed to absorb thousands of small torque pulses and vibrations every minute that the engine is running. Over time, particularly in Singapore's heat, the rubber element ages, hardens and loses its damping ability.

The deterioration is gradual. Early on, the owner may notice a barely perceptible increase in cabin vibration. Over time it becomes more obvious, particularly on acceleration or when engaging drive from rest. By the time most owners notice it enough to investigate, the mounts are past their useful life.

This is not a sign of poor build quality or unusual wear. It is a normal maintenance item on any vehicle at a certain age and mileage. The right response is a straightforward replacement with OEM parts, which restores the mount to the factory specification.

What we did

We replaced both the engine mount and gearbox mount in one visit.

  • Lifted the car and secured it safely on the workshop lift.
  • Removed the deteriorated engine mount and fitted the OEM Mercedes replacement (A253 240 09 00).
  • Removed the deteriorated gearbox mount and fitted the OEM Mercedes replacement (A253 240 10 00).
  • Ran a XENTRY diagnostic scan to confirm no related fault codes.
  • Road tested the car to confirm the vibration was resolved and the drivetrain was settled.

The total was $830 nett, all-in, as quoted. The owner collected the car with no vibration and confirmation that the job was done with OEM parts.

Mercedes GLC W253 on the lift at 1 Car Service Singapore with techs replacing engine and gearbox mounts

Before and after

Before

  • Vibration through the cabin under acceleration, particularly on pull-away
  • Engine and gearbox mounts hardened and cracked, no longer absorbing drivetrain movement
  • Shunt feeling when engaging drive or reverse

After

  • Vibration resolved, cabin smooth on acceleration and at cruise
  • OEM Mercedes mounts fitted, drivetrain correctly isolated from the body
  • XENTRY scan clean, road tested before handover, $830 nett all-in

What a Mercedes GLC engine mount replacement costs in Singapore

A Mercedes GLC W253 engine and gearbox mount replacement using OEM parts costs around $700 to $1,200 in Singapore, depending on labour time and whether both mounts or just one needs replacing.

On this GLC, both mounts were replaced together using OEM Mercedes parts at $830 nett, all-in. Aftermarket mounts are available at a lower price, but they do not always match the stiffness and damping spec of the OEM part, which can result in different NVH characteristics.

How to maintain a Mercedes GLC long-term

Get the engine and gearbox mounts inspected at every major service, especially past 80,000km. A visual inspection on the lift takes a few minutes and catches deterioration before it becomes a noticeable fault.

Use OEM Mercedes parts for mount replacements. The stiffness and damping characteristics are calibrated for the W253's specific engine and transmission combination. Aftermarket alternatives may fit but will not always restore the factory vibration isolation.

Use XENTRY for all diagnostic work on a Mercedes. XENTRY is the Mercedes-Benz factory tool. It reads fault codes across all control modules and provides accurate live data for diagnosis. Generic OBD-II tools do not cover the full Mercedes CAN bus.

About the workshop

This Mercedes-Benz GLC (Engine mount and gearbox mount replacement) was handled at 1 Car Service, an independent workshop in Sin Ming AutoCity, Singapore. For Mercedes-Benz, we use dealer-level XENTRY diagnostics. We hold a 4.9★ rating from 1,753+ Google reviews.

Signs your Mercedes GLC may need engine mount replacement

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WhatsApp us your GLC model and mileage. We inspect it with XENTRY, show you the findings, and quote before any work begins.

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Mercedes GLC engine mount replacement: common questions

How much does a Mercedes GLC engine mount replacement cost in Singapore?

A Mercedes GLC W253 engine mount and gearbox mount replacement with OEM parts costs around $700 to $1,200 in Singapore depending on which mounts are replaced. On this GLC both mounts were replaced at $830 nett all-in. Aftermarket mounts cost less but may not match the OEM damping specification.

How do I know if my Mercedes GLC needs new engine mounts?

The most common sign is vibration through the cabin that appears or increases under acceleration. You may also notice a shunt or clunk feeling when engaging drive or reverse from a stop, increased engine noise in the cabin, or visible engine movement when the bonnet is open and someone revs the engine. A workshop inspection on a lift confirms it.

Should I use OEM or aftermarket engine mounts on a Mercedes GLC?

OEM Mercedes mounts are the correct choice. They are calibrated for the specific stiffness and damping characteristics of the W253's engine and transmission. Aftermarket mounts may fit correctly but their damping properties often differ, which can result in different vibration characteristics. For a vehicle at the GLC's price point, OEM is the right call.

Is it worth replacing engine mounts on an older Mercedes GLC?

Yes, if the rest of the car is in good condition. Engine and gearbox mounts are straightforward wear items. A replacement with OEM parts restores the car to factory vibration levels at a cost that is a fraction of the car's value. Ignoring worn mounts stresses the drivetrain and can cause additional wear on related components.

Do you use XENTRY for Mercedes GLC diagnostics in Singapore?

Yes. XENTRY is the Mercedes-Benz factory diagnostic system. We use it to scan all control modules on the GLC before and after any engine or drivetrain work, to confirm no fault codes are present and that the repair is complete. Generic OBD-II tools do not read the full Mercedes CAN bus and miss vehicle-specific faults.

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