Opel Mokka
The PSA/Stellantis 1.2-litre turbopetrol with a wet timing belt is the most problematic engine in the current Opel generation. The belt can disintegrate with the wrong oil specification or overdue maintenance interval and block oil passages – with engine damage risk. Stellantis extended warranty to 10 years/175,000 km. Used purchase only with a complete service history and correct PSA B71 2312 oil specification.
Mokka B base
74 kW in the new Mokka – tight, sufficient for the city.
Engine Weaknesses 8
The timing belt running in engine oil swells with the wrong oil specification, becomes porous and generates abrasion. Particles block oil passages and oil pump – engine damage from lubricant starvation is the risk.
Symptoms: Oil warning light, engine stuttering, rough running, sometimes no warning before total engine failure.
Timing belt abrasion settles in fine oil passages and the oil pump strainer. Bearings receive insufficient lubrication – bearing damage and engine failure result, often without warning.
Symptoms: Oil pressure warning light, engine noise (knocking), sudden power loss, engine failure.
The EB2DTS PureTech wet belt slowly abrades and contaminates the engine oil with rubber residue. These block oil passages and cause bearing seizure. Stellantis extended warranty to 10 years/175,000 km (service history required).
Symptoms: Black, rapidly degrading oil, oil pressure drop, engine noise from bearing starvation, in extreme cases engine damage at 50,000–80,000 km.
Stellantis extended the warranty in 2024 for older EB2 PureTech generations to 10 years/175,000 km due to wet timing belt problems. Requirement: complete service history in accordance with manufacturer specifications.
Degraded belt material in the oil blocks oil passages in the EB2DTS. Connecting rod bearings seize and cause catastrophic engine damage. Exchange engine: 3,000–6,000 €. Early belt replacement every 50,000 km minimises risk.
Symptoms: Knocking engine noise, oil pressure warning light, sudden engine shutdown, metal particles in oil at oil change.
The EB2DTS absolutely requires PSA B71 2312 certified oil. Standard oils dissolve the wet timing belt; abraded particles block oil passages and the pump. Annual oil changes are mandatory.
Symptoms: No early warning symptom – engine failure occurs suddenly. Only detectable through oil inspections.
Stellantis has extended the warranty for all affected PureTech engines to 10 years or 175,000 km. Requirement: proof of prescribed maintenance intervals with the correct oil.
In the Opel Grandland X 1.2 PureTech (EB2DTS) spark plugs wear before the scheduled 50,000 km interval, which can cause starting difficulties with fault code P1032.
Symptoms: Poor starting, fault code P1032, rough idle, slightly elevated consumption.
Vehicle Weaknesses 13
Mokka models (production May 2022 – March 2023) were recalled due to faulty high-pressure fuel lines. Loose connections allow fuel to enter the engine bay with acute fire risk.
The 1.2-turbo three-cylinder (Stellantis EB2) of the Mokka B uses a timing belt running in an oil bath, which can fail prematurely with incorrect oil spec or excessively long change intervals.
Already after 38,000–56,000 km the front axle ball joints show excessive play and are flagged at the MOT. According to TÜV statistics the defect rate is nine times above average.
LED headlights fail on individual units (fault codes B0984/B0985). No individual replacement of LED modules possible; entire unit for approx. 850–1,700 € plus fitting must be replaced.
LED headlights and tail lights of the Mokka B fail due to defective control units or wiring damage. Models from the first production years 2020–2021 frequently affected.
The infotainment occasionally stops responding; Bluetooth connections drop. Not all smartphone types connect reliably. Software updates only partially improve it.
According to TÜV statistics brake disc wear is clearly above the class average. Pads need replacing earlier than expected. Typical cost for full front replacement approx. 400–600 €.
The stop-start system of the Mokka B deactivates itself frequently without input. In addition, intermittent infotainment crashes occur, especially on cold start or after extended standstill.
Brake pads and discs on the Mokka B wear above average quickly, especially in city use. Front pads already at wear limit after 25,000–35,000 km.
On the Mokka B (CMP platform) rattling occurs at the front axle attributed to play in the steering column universal joint. Described by Opel as design-related.
On the Mokka B the tailgate strikes the boot lip when closing, causing paint damage. Manufacturing tolerance issue; Opel made corrections; early examples affected.
According to owners, the Mokka B has a thin factory body sealing. Body seams and wheel arch edges are considered susceptible after several winters.
On the Mokka B fault messages for the electronic parking brake system and the multi-collision brake assist are displayed without an actual fault. Software error.
Reports & Tests
Suspension shows a significantly elevated failure rate — control arms and steering ball joints are flagged above average. Brake disc wear is higher than its predecessor. Electronic faults affect multimedia and emergency braking system warnings.
