The 2.0 d (Mercedes OM654) engine was fitted to the Mercedes-Benz GLA (H247) (2020–now). In the EU that is 41.4 % of all new cars of this generation.
Versions: 2.0 150 hp, 2.0 116 hp, 2.0 190 hp.
The most expensive known risk is exhaust-side roller rocker arms wear (ticking, rough idle): it usually appears at 60,000–250,000 km and costs €1,500–3,000 to fix.
Engine faults ✓ Checked against sources (10/2026)
✓ The faults of this engine were checked against sources (10/2026). Each item has at least two independent sources or an official recall or parts-maker technical note.
AdBlue / SCR faults: NOx sensor, AdBlue pump or heater, dosing valve
usually 60,000–180,000 km · Medium risk
Signs: AdBlue or emissions warning with a countdown in km; if ignored, the engine will not restart; NOx sensor codes, sometimes limp mode
Fix: Read the codes at once; check for Mercedes SCR software updates, then test and replace the faulty NOx sensor, pump / heater or dosing valve
€300–1,200
DPF clogging from short trips
usually 60,000–200,000 km · Medium risk
Signs: DPF warning, frequent or interrupted regenerations, reduced power
Fix: Drive longer runs or run a forced regeneration; check the pressure sensor and EGR first; clean or replace the filter if ash-loaded; use MB 229.52 / 229.71 oil
€150–2,000
EGR valve and cooler sooting (low-pressure EGR on early engines)
usually 80,000–200,000 km · Medium risk
Signs: Rough idle, power loss, EGR fault codes (P0400 range), regenerations do not finish
Fix: Check EGR position and flow in live data; clean or replace the valve, and the cooler if it is blocked or leaking
€300–1,200
Exhaust-side roller rocker arms wear (ticking, rough idle)
usually 60,000–250,000 km · Medium risk
Signs: Dull ticking or plopping noise from the top of the engine, rough idle
Fix: Inspect rockers and cam lobes; replace all roller rockers and lash adjusters, and the camshaft housing if the cams are marked
€1,500–3,000
Gearboxes
Manual
Clutch wear
usually 120,000–200,000 km · Medium risk
Signs: Slipping, high bite point
Fix: Replace clutch kit
€500–900
7G-DCT (A / B / CLA / GLA)
7G-DCT jerky low-speed shifts / mechatronic
usually 60,000–160,000 km · Medium risk
Signs: Jerks in traffic, delayed engagement
Fix: Software update; fluid change; mechatronic
€200–2,000
Service plan for this engine
Typical routine maintenance cost for 100,000 km: €2,450–5,900. Sum of the services and wear parts in the plan above (about 15,000 km a year, independent workshop), without faults.
Intervals and typical prices for the Mercedes-Benz GLA (H247) with the 2.0 d (Mercedes OM654) engine. The app gives the exact plan for your mileage.
Versions of this engine in the Mercedes-Benz GLA (H247)
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.
Official recalls
Recalls the manufacturer published in the United Kingdom for this model (20). 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.
- Electronics / software SRPC2515 - Short-range sensor front13/11/2025 · R/2025/439
- High voltage / charging SRPC2415 - Sealing Ring of Exhaust Manifold18/10/2024 · R/2024/392
- Steering SRPC2404 – Backup function of steering software06/05/2024 · R/2024/166
- Suspension / axles Locking pawl spring of the left hand side door locks might not be greased correctly14/01/2022 · R/2021/437
- Other The behaviour of the emergency call system might not meet specifications01/12/2021 · R/2021/106
- Other The behaviour of the emergency call system might not meet specifications01/12/2021 · R/2021/107
- Other The behaviour of the emergency call system might not meet specifications01/12/2021 · R/2021/130
- Other The behaviour of the emergency call system might not meet specifications29/11/2021 · R/2021/376
Common questions
What are the biggest risks of the Mercedes-Benz GLA (H247) with the 2.0 d (Mercedes OM654) engine?
The faults with the highest risk: exhaust-side roller rocker arms wear (ticking, rough idle) (60,000–250,000 km, €1,500–3,000); DPF clogging from short trips (60,000–200,000 km, €150–2,000); adBlue / SCR faults: NOx sensor, AdBlue pump or heater, dosing valve (60,000–180,000 km, €300–1,200); EGR valve and cooler sooting (low-pressure EGR on early engines) (80,000–200,000 km, €300–1,200).
Does the Mercedes-Benz GLA (H247) 2.0 d (Mercedes OM654) have a timing belt or a chain?
Chain.
Which oil does the Mercedes-Benz GLA (H247) 2.0 d (Mercedes OM654) need?
0W-20 / 5W-30 · MB 229.52 / 229.71 · ~6.5 L · every 15,000 km.
Sources and notes
Main sources for the faults of this engine:
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. How we check the data →
Updated 29/10/2026