Air suspension (Airmatic)
usually 100,000–200,000 km · Medium risk
Signs: Car sits low, compressor runs long
Fix: Replace strut / compressor
€700–2,200
Common faults, service intervals and costs
Mercedes-Benz GLS (X167)
2019–now
1
engines covered
2
known faults
Enter your VIN and mileage and get a plan built for your exact engine and gearbox.
The Mercedes-Benz GLS (X167) has been built since 2019.
For this generation we cover 1 engines and 2 known faults, each with the mileage range where it usually appears.
The most expensive known risk is Air suspension (Airmatic): it usually appears at 100,000–200,000 km and costs €700–2,200 to fix.
Engines
| Engine | Fuel | Timing drive | Oil |
|---|---|---|---|
| 2.9 d inline-six (Mercedes OM656) | Diesel | Chain | 0W-30 / 5W-30 · MB 229.52 / 229.71 · ~7.5–8.5 L · every 15,000 km |
Faults typical of this model
Faults by engine
2.9 d inline-six (Mercedes OM656)
No typical faults on record.
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 2.9 d inline-six (Mercedes OM656) 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 |
| 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 |
| 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 |
Most common engine versions in the EU
New cars of this generation registered in the EU, Iceland and Norway 2010–2025: 26,046, of which 41 in Croatia. The share shows how common each version is.
| Version | Share | Years | CO₂ | Fuel use |
|---|---|---|---|---|
| 2.9 d inline-six (Mercedes OM656)2.9 (2,925 cm³) · 243 kW (330 hp) · Diesel | 36.8 % | 2020–2025 | 235 g/km | 8.8 L |
| 3.0 Hybrid3.0 (2,989 cm³) · 270 kW (367 hp) · Hybrid | 28.3 % | 2020–2025 | 230 g/km | 8.9 L |
| 4.0 Hybrid4.0 (3,982 cm³) · 410 kW (557 hp) · Hybrid | 7.9 % | 2020–2025 | 302 g/km | 13.3 L |
| 2.9 d inline-six (Mercedes OM656)2.9 (2,925 cm³) · 210 kW (286 hp) · Diesel | 6.8 % | 2020–2024 | 230 g/km | 8.6 L |
| 4.0 Hybrid4.0 (3,982 cm³) · 360 kW (489 hp) · Hybrid | 6.3 % | 2020–2025 | 282 g/km | 12.5 L |
| 3.0 Hybrid3.0 (2,999 cm³) · 280 kW (381 hp) · Hybrid | 5.5 % | 2023–2025 | 248 g/km | 10.9 L |
| 3.0 Hybrid3.0 (2,989 cm³) · 230 kW (313 hp) · Hybrid | 3.3 % | 2023–2025 | 223 g/km | 8.5 L |
| 4.0 Hybrid4.0 (3,982 cm³) · 380 kW (517 hp) · Hybrid | 2.5 % | 2023–2025 | 312 g/km | 13.8 L |
| 3.0 Hybrid3.0 (2,989 cm³) · Hybrid | 1.2 % | 2025–2025 | 222 g/km | 5.8 L |
Source: European Environment Agency (EEA), monitoring of CO₂ emissions from new passenger cars, CC BY 4.0. CO₂ and fuel use are official type-approval values (WLTP from 2021), not real-world consumption.
Common questions
Does the Mercedes-Benz GLS (X167) have a timing chain or a timing belt?
2.9 d inline-six (Mercedes OM656): chain.
What are the known problems with the Mercedes-Benz GLS (X167)?
The faults with the highest risk: air suspension (Airmatic) (100,000–200,000 km, €700–2,200); conductor plate / speed sensor (5G / 7G-Tronic) (100,000–220,000 km, €500–1,500). The full list by engine is on this page.
What should you check when buying a used Mercedes-Benz GLS (X167)?
Before you buy, ask an authorised dealer to check by VIN whether the car has any open recalls. On the test drive, watch for these signs: car sits low, compressor runs long; stuck in gear, limp mode, harsh shifts. The full checklist is in the guide to buying a used car.
Models with the same engines
These models share engines with this car, so they share some of its faults too.
Mercedes-Benz E-Class (W213) 2016–2023Mercedes-Benz GLE (V167) 2019–Mercedes-Benz S-Class (W222) 2013–2020Mercedes-Benz G-Class (W463) 1990–Mercedes-Benz S-Class (W223) 2020–Mercedes-Benz CLS (C257) 2018–2023
Other Mercedes-Benz models
Mercedes-Benz CLA (C118) 2019–Mercedes-Benz EQC (N293) 2019–2024Mercedes-Benz GLB (X247) 2019–Mercedes-Benz A-Class (W177) 2018–Mercedes-Benz B-Class (W247) 2018–Mercedes-Benz GLA (H247) 2020–Mercedes-Benz Sprinter (907 / 910) 2018–Mercedes-Benz C-Class (W206) 2021–Mercedes-Benz Citan (W420) 2021–Mercedes-Benz EQA (H243) 2021–
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. Dutch tests: RDW Open Data (CC0). Engine versions: EEA, monitoring of CO₂ emissions from new passenger cars (CC BY 4.0, DG CLIMA). 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 08/10/2026