Opel Mokka B — Problems & Common Faults

Modern PSA/Stellantis four-cylinder (1.5 L BlueHDi, 96 kW) with excellent fuel consumption, but a structurally undersized camshaft chain (7 mm width) that was subject to a mass recall with warranty extension to 10 years/240,000 km. When buying, absolutely verify whether the chain update has been carried out. AdBlue system and EGR are prone to faults with short-trip use. A capable long-distance diesel with genuine potential.

• !! Camshaft chain: premature wear (recall) from 70,000 km

  The original 7 mm camshaft chain wears prematurely and can break, causing severe engine damage. Stellantis recalled over 141,700 vehicles in Germany alone. Warranty extended to 10 years/240,000 km.

  Symptoms: Unusual knocking or rattling noises from the engine bay, especially on cold start. In the worst case sudden engine failure while driving.
  0–4,000 $
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• !! AdBlue system: pump, sensor and dosing valve from 60,000 km

  The AdBlue dosing valve and the NOx sensor fail regularly. The pump and tank are one assembly and cannot be replaced individually, making repairs expensive.

  Symptoms: AdBlue warning light on, engine management light active, elevated AdBlue consumption. Vehicle risks entering limp mode after several warning cycles.
  300–900 $
  Ad DV5RD AdBlue pump1.5 BlueHDi NOx sensor
• ! EGR valve: carbon fouling and failure from 100,000 km

  The EGR valve carbonises with frequent short-trip use. Typical symptoms are engine warning light, fluctuating power and black smoke. Cleaning or replacement necessary.

  Symptoms: Engine management light, rough running, power loss under part throttle, black smoke when accelerating.
  200–600 $
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+ 1 more engine weaknesses + vehicle weaknesses

48V mild-hybrid version of the latest PureTech generation: a 1.2 three-cylinder turbo with a timing chain — per trade press, the EB2LTED/EB2LTEDH2 engine codes consistently denote the chain design, no longer the predecessors' wet belt. The 21 kW e-motor sits in the electrified six-speed dual-clutch gearbox (e-DCS6); the 48V battery holds 0.9 kWh. Known early-production items: a recall for a mispositioned camshaft-phaser bolt (until February 2024), the multi-brand high-pressure fuel line recall and the 48V starter-generator fire-safety recall, plus first-batch software glitches and occasional DCS6 control-unit failures on young cars. Long-term chain data is still missing.

• !! MCU calibration fault — loss of drive

  A miscalibrated motor control unit (MCU) incorrectly detects an internal insulation fault and opens the clutch as a result — unexpected loss of drive while in motion is possible.

  0–0 $
• !! Drive cut-out after DC fast charging from 15,000 km

  Electric Opel commercial vehicles (Movano-e) can briefly cut drive at higher speeds after DC fast charging. Thermally triggered software fault. Update available at dealer.

  Symptoms: Sudden loss of drive at motorway speed after previous fast charging; warning message 'check drive'; fault disappears after cooling down.
  0–200 $
  Ad Antriebscontrol unit Movano-eBMU Update Opel Elektro
• !! Timing chain — possible premature wear from 90,000 km

  The EB2LTDH2 uses a timing chain (instead of an oil-bath belt). Early reports of rattling after 80,000 km suggest possible premature wear. The chain is on the gearbox side — repair is labour-intensive.

  Symptoms: Rattling on cold start from the engine bay, settling down after warm-up; in advanced cases a permanent chain noise.
  1,500–3,500 $
  Ad timing chain EB2LTDH2chain tensioner Opel 1.2 Turbo Hybridtiming chain Grandland 2023

+ 7 more engine weaknesses + vehicle weaknesses

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 an overdue service interval and block oil passages — with a serious risk of engine damage. Stellantis extended the warranty to 10 years/175,000 km. Used purchase only with a complete maintenance record and correct PSA B71 2312 oil specification.

• !! Wet timing belt disintegrates from 70,000 km

  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.
  800–13,000 $
  Ad Opel PureTech timing beltEB2DTS timing beltPSA 1.2 timing belt set
• !! Oil starvation from blocked oil passages from 80,000 km

  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.
  3,000–13,000 $
  Ad EB2DTS oil pumpnsiebPSA PureTech oil strainer
• !! Wet belt degrades in oil – oil contamination from 60,000 km

  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.
  800–6,000 $
  Ad PureTech timing belt EB2DTStiming belt kit 1.2 PureTech0816.W9

+ 5 more engine weaknesses + vehicle weaknesses

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 an overdue service interval and block oil passages — with a serious risk of engine damage. Stellantis extended the warranty to 10 years/175,000 km. Used purchase only with a complete maintenance record and correct PSA B71 2312 oil specification.

• !! Wet timing belt disintegrates from 70,000 km

  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.
  800–13,000 $
  Ad Opel PureTech timing beltEB2DTS timing beltPSA 1.2 timing belt set
• !! Oil starvation from blocked oil passages from 80,000 km

  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.
  3,000–13,000 $
  Ad EB2DTS oil pumpnsiebPSA PureTech oil strainer
• !! Wet belt degrades in oil – oil contamination from 60,000 km

  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.
  800–6,000 $
  Ad PureTech timing belt EB2DTStiming belt kit 1.2 PureTech0816.W9

+ 5 more engine weaknesses + vehicle weaknesses

Third generation of the 1.2-litre three-cylinder turbo with a timing chain instead of the predecessors' wet belt; in the compact SUV it has been paired exclusively with a six-speed manual since August 2023, while the eight-speed automatic stays reserved for the weaker belt variant. The chain drive is still young and solid long-term data is missing. Documented so far: one isolated camshaft synchronisation fault at 4,500 km, where the special tool had a lead time of months, plus the fuel-rail recall for production from November 2022 to April 2025. When buying, check the recall status by VIN and listen for rattling at cold start.

• !! Recall: fuel rail connections not tightened correctly (KBA 15353R/KUU et al.)

  On 1.2 turbo models built 10/2022 to 05/2025 the connections between high-pressure line and fuel rail were not tightened to spec. Fuel can leak and ignite on hot components; 11 fires had been reported by 17 June 2025.

  Symptoms: Petrol smell in the engine bay, fuel traces at rail or high-pressure line; in the worst case smoke or fire under the bonnet. Usually no warning — check recall status by VIN.
  0–0 $

The PSA/Stellantis electric motor is fundamentally low-maintenance and free from classic combustion engine problems. However, sporadic drivetrain system faults are known that can lead to complete vehicle immobilisation — software updates have resolved many of these cases. The 50 kWh battery shows good ageing characteristics so far. The onboard charger (7.4 kW AC) and heat pump are occasional sources of faults.

• !! Electric drivetrain fault — vehicle blocked from 15,000 km

  Sporadic 'electric drivetrain system fault' message blocks the vehicle: gearbox stays in park. Occurs from around 10,000 km, often self-resolving after 30 min. Software update brought improvement.

  Symptoms: Display shows 'electric drivetrain system fault: stop vehicle'. Gearbox cannot be moved out of P
  0–3,000 $
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• !! Gearbox oil loss, reduction gear defective from 40,000 km

  Isolated cases of gearbox oil loss through a crack in the gearbox casing. Complete gearbox replacement required. Long parts lead times.

  Symptoms: Gearbox clunking, power loss, oil under the vehicle, gearbox fault message
  1,500–5,000 $
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• !! OBC (onboard charger) defective — AC charging failed from 30,000 km

  The onboard charger (OBC) of the Corsa-e/Mokka-e fails frequently on early build years (2020–2021): AC charging via Type 2 no longer possible, DC rapid charging still works. Opel acknowledged the structural defect and offers special goodwill. OBC replacement approximately 4,000 €.

  Symptoms: AC charging aborts immediately after plugging in, LED shows red, vehicle attempts to charge but connector unlocks immediately, DC charging still works.
  3,000–4,500 $
  Ad OBC Corsa-eonboard charger Mokka-e 2020PSA e-OBC

+ 5 more engine weaknesses + vehicle weaknesses

The PSA/Stellantis electric motor is fundamentally low-maintenance and free from classic combustion engine problems. However, sporadic drivetrain system faults are known that can lead to complete vehicle immobilisation — software updates have resolved many of these cases. The 50 kWh battery shows good ageing characteristics so far. The onboard charger (7.4 kW AC) and heat pump are occasional sources of faults.

• !! Electric drivetrain fault — vehicle blocked from 15,000 km

  Sporadic 'electric drivetrain system fault' message blocks the vehicle: gearbox stays in park. Occurs from around 10,000 km, often self-resolving after 30 min. Software update brought improvement.

  Symptoms: Display shows 'electric drivetrain system fault: stop vehicle'. Gearbox cannot be moved out of P
  0–3,000 $
  Ad control unit Corsa-e AntriebSoftware Update Corsa-e
• !! Gearbox oil loss, reduction gear defective from 40,000 km

  Isolated cases of gearbox oil loss through a crack in the gearbox casing. Complete gearbox replacement required. Long parts lead times.

  Symptoms: Gearbox clunking, power loss, oil under the vehicle, gearbox fault message
  1,500–5,000 $
  Ad gearbox Corsa-eReduktionsgearbox e-208
• !! OBC (onboard charger) defective — AC charging failed from 30,000 km

  The onboard charger (OBC) of the Corsa-e/Mokka-e fails frequently on early build years (2020–2021): AC charging via Type 2 no longer possible, DC rapid charging still works. Opel acknowledged the structural defect and offers special goodwill. OBC replacement approximately 4,000 €.

  Symptoms: AC charging aborts immediately after plugging in, LED shows red, vehicle attempts to charge but connector unlocks immediately, DC charging still works.
  3,000–4,500 $
  Ad OBC Corsa-eonboard charger Mokka-e 2020PSA e-OBC

+ 5 more engine weaknesses + vehicle weaknesses