AdBlue / SCR faults
usually 100,000–180,000 km · Medium risk
Signs: AdBlue warning
Fix: Replace NOx sensor or doser
€300–1,000
Common faults, service intervals and costs
Mercedes-Benz GLC (X254)
2022–now
2
engines covered
3
known faults
14
official recalls
Enter your VIN and mileage and get a plan built for your exact engine and gearbox.
The Mercedes-Benz GLC (X254) has been built since 2022.
For this generation we cover 2 engines and 3 known faults, each with the mileage range where it usually appears.
The most expensive known risk is 48V belt starter-generator: it usually appears at 60,000–160,000 km and costs €700–1,500 to fix.
Engines
| Engine | Fuel | Timing drive | Oil |
|---|---|---|---|
| 2.0 d (Mercedes OM654) | Diesel | Chain | 0W-20 / 5W-30 · MB 229.52 / 229.71 · ~6.5 L · every 15,000 km |
| 1.5 / 2.0 petrol (Mercedes M260 / M264) | Petrol | Chain | 0W-20 / 5W-30 · MB 229.71 / 229.5 · ~6.5 L · every 15,000 km |
Faults by engine
2.0 d (Mercedes OM654)
1.5 / 2.0 petrol (Mercedes M260 / M264)
48V belt starter-generator
usually 60,000–160,000 km · Medium risk
Signs: Start-stop faults, 48V warning
Fix: Replace RSG unit
€700–1,500
Gearboxes
5G / 7G / 9G-Tronic
Conductor plate / speed sensor (5G / 7G-Tronic)
usually 100,000–220,000 km · Medium risk
Signs: Stuck in gear, limp mode, harsh shifts
Fix: Replace the conductor plate; fluid every 60–100,000 km
€500–1,500
Scheduled service
Intervals and typical prices for the 2.0 d (Mercedes OM654) engine. Other engines differ in oil, timing drive and some filters; the app gives the exact plan.
| Item | Interval | Typical price |
|---|---|---|
| DPF health check (soot / ash load)Emissions | every 20,000 km | €0–60 |
| Transfer case / rear differential oilTransmission | every 80,000 km | €60–160 |
| Engine oil + oil filterEngine | every 15,000 km or every 12 months | €70–150 |
| Cabin (pollen) filterClimate | every 15,000 km or every 12 months | €15–40 |
| Brake fluidBrakes | every 24 months | €50–95 |
| AdBlue top-upEmissions | every 15,000 km | €10–30 |
| A/C service (regas + desiccant)Climate | every 24 months | €70–150 |
| Air filterEngine | every 30,000 km or every 24 months | €15–45 |
| Fuel filterFuel | every 30,000 km or every 24 months | €40–110 |
| AWD coupling (Haldex) oil + filterTransmission | every 60,000 km or every 36 months | €60–150 |
| Automatic transmission fluidTransmission | every 90,000 km | €200–450 |
| Glow plugsEngine | every 100,000 km | €120–300 |
| Auxiliary (serpentine) beltEngine | every 120,000 km | €70–180 |
| Coolant replacementCooling | every 150,000 km or every 96 months | €70–150 |
| Timing chain inspection (listen on cold start)Engine | every 150,000 km | €0–120 |
| Front brake padsBrakes | usually at 30,000–60,000 km | €60–150 |
| Front brake discs + padsBrakes | usually at 60,000–120,000 km | €150–320 |
| Rear brake padsBrakes | usually at 50,000–90,000 km | €50–130 |
| Tyres (set of 4)Wheels | usually at 40,000–60,000 km | €320–700 |
| Wiper bladesBody | checked at service | €20–50 |
| 12V batteryElectrical | checked at service | €100–220 |
Official recalls
Recalls the manufacturer published in the United Kingdom for this model (14). The same recalls usually apply across Europe. Ask an authorised dealer to check by VIN whether your car is affected and whether the work has been done.
- Steering SRPC2512 - Bolting of Steering Coupling08/09/2025 · R/2025/333
- Visibility SRPC2508 – Mounting of Multi-Purpose Camera & Interior Mirror01/07/2025 · R/2025/216
- High voltage / charging SRPC2501 - Processor Starter/Generator03/04/2025 · R/2025/124
- Fire risk SRPC2419 Misfire Detection M26404/12/2024 · R/2024/474
- Engine / loss of power SRPC2401 - System protection25/03/2024 · R/2024/130
- Fuel system On affected vehicles the bolting of the high-pressure fuel pump might not meet specifications.30/01/2024 · R/2024/013
- Doors / locks / lids On affected vehicles the bonding of the front rear and fixed side windows might not meet specifications.15/12/2023 · R/2023/328
- Other The socket for the towing device in the front crossmember might not meet specifications10/11/2023 · R/2023/291
The other recalls (6) are listed in the app.
Other generations
Sources and notes
Faults, intervals and prices are indicative and collected from public sources and owner experience; always rely on the service book and a qualified workshop. Test statistics: DVSA – Anonymised MOT tests and results, Open Government Licence v3.0. Owner complaints: NHTSA ODI (public domain). Recalls: DVSA Vehicle Safety Branch Recalls Database, OGL v3.0. Brand and model names are trademarks of their owners and are used only to describe the vehicles.
Updated 07/10/2026