Au7o mascotAu7o
Known IssuesTest Hub demo
  1. Au7o
  2. /
  3. Known Issues
  4. /
  5. Opel
  6. /
  7. Mokka
Opel · Known Issues

2021 Opel Mokka Problems: 3 Known Issues

2021 model year · NHTSA recalls, manufacturer TSBs, and owner forum reports · Updated September 2026

Share:@au7o.io

2021 · All trims · All engines

Choose the year and equipment for your written issues and visual request.

No email neededHow interest is saved

Interest applies to the selected vehicle and configuration; it is not a reservation. Voting stores a first-party identifier for up to 180 days to prevent repeat votes. No account or email is needed. Clearing cookies or using another device may count separately. Privacy

Visual coming soon

Your interest helps us choose what to build next.

Visual Known Issues · Coming soon

Known IssuesMotorcycle IssuesDTC LookupDrivePricingAboutTermsPrivacyCookiesConsentData rightsCopyrightFeedback
Share:@au7o.io

Vehicle data and repair guidance on this site are compiled with AI assistance and may contain errors. Always verify with your service manual or a qualified mechanic.

Data protection representation

DataRep representative in the United KingdomDataRep representative in the European Union
Au7o · 2026
Built for DIY mechanics. Privacy-first.
Explore free Hub demo

$4.99/month plus taxes at launch · No payment today

Preview the XT6 example
Issue summary

According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2021 Opel Mokka has 3 documented known issues, with 2 rated critical. The most serious are 1.2 PureTech Wet Timing Belt Degradation / Failure (Mokka B) ($700-$6,000 repair) and Mokka-e Onboard AC Charger (Mahle 11kW) Failure ($0-$2,500 repair). Across all issues with published estimates, repair costs range from $700 to $6,000. DIY maintenance guides at au7o.io.

In This Article

  • Mokka Electrical2
  • Mokka Engine1
  • FAQ
Get Started
Back to top

In This Article

  • Electrical2
  • Engine1
  • FAQ

All 3 Known Issues

Filter:
ALL YEARS20252024202320222021202020192018201720162015201420132012

On the 2021-2024 Opel Mokka BEV (50 kWh, e-CMP), the electric Mokka-e (and Corsa-e platform sibling) suffers from failures of the Mahle 11 kW three-phase onboard charger (OBC). When it fails, the car can no longer AC charge from a home wallbox or public AC point (often showing 'charging at 0 miles per hour' or charging briefly then stopping); DC rapid charging may still work as a stop-gap. Forum reports indicate dealers replacing these units regularly, and out-of-warranty replacement is expensive (often over EUR 2,000). 2021-2022 cars are most cited. This is distinct from the separate 12V auxiliary-battery drain issue.

Common Symptoms

  • Cannot AC charge from wallbox/public charger
  • 'Charging at 0 mph' message
  • Charges briefly then stops
  • Charging fault warning
  • DC charging works but AC does not

How to Fix

Diagnose the OBC via dealer/EV specialist; the fix is replacement of the onboard charger module (covered under the EV-component / battery extended warranty where applicable). As a temporary workaround some owners reduce wallbox current (e.g. 32A to 16A) or use DC rapid charging until repaired.

Typical repair cost:$0 - $2,500

Research This Issue

GoogleRedditYouTubeNHTSA
Community Reported
High ConfidenceVerifiedReviewed Jun 2026

On the 2020-2024 Opel Mokka Electric, mokka-e (and closely related Corsa-e, Peugeot e-208, DS 3 Crossback E-Tense — all CMP/eCMP platform) drains the 12V AGM auxiliary battery during long parking spells, leaving the car unable to wake or charge. Owners report drain as fast as 3-5 days of inactivity. The MyOpel smartphone app polling the car wakes systems and accelerates drain. Stellantis acknowledged the issue and pushed multiple software updates between 2021-2024 — Opel recalled ~13,507 Corsa/Combo/Mokka in Germany alone for the traction battery control software.

Common Symptoms

  • dead 12V
  • car will not wake
  • will not start HV system
  • will not begin charging

How to Fix

Update vehicle software to latest (dealer can check; some VINs covered by recall). Use a 12V battery maintainer for parked stretches over 1 week. Disable MyOpel remote polling if parking long-term. AGM 12V replacement needs coding — DIY is risky; dealer cost ~€290 (€150-€250 battery + €50-€100 fit/code).

Find a Opel dealer

Choose to share your location for this search, or enter an area below. Your search location is sent to Google to find dealers.

Open Opel dealer map in Google Maps ↗

Call to confirm they service Opel vehicles and check your VIN, recall eligibility, parts availability, and appointment options.

What you need to fix it

Only diagnosis- and fitment-reviewed repair parts are linked here.

  • CTEK CS ONE 12 V smart battery charger and maintainer

    Confirm Mokka-e battery chemistry and use only the manual's designated charge points/procedure.

    CTEK

As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.

Typical repair cost:$0 - $350

Research This Issue

GoogleRedditYouTubeNHTSA
Manually Verified
High Confidence

On the 2021-2025 Opel Mokka 1.2 PureTech (EB2/EB2ADTS, 3-cylinder turbo petrol), the second-generation Mokka B (built on the Stellantis CMP platform) uses the PSA/Stellantis 1.2 PureTech (EB2) three-cylinder turbo with a 'wet' timing belt that runs submerged in engine oil. Fuel dilution and oil contamination cause the belt rubber to break down prematurely; shed particles clog the oil pump pick-up strainer, starving the engine of oil, and the belt itself can skip teeth or snap. Because it is an interference engine, belt failure typically destroys valves and pistons. Affected cars also show excessive oil consumption. Stellantis acknowledged the defect and runs a PureTech compensation platform covering documented oil-consumption and premature-belt expenses on 1.0/1.2 PureTech cars, with extended warranty up to 10 years / 112,000 miles under conditions.

This issue also affects: Opel Astra, Opel Combo, Opel Corsa

Common Symptoms

  • Rattling/whining from front of engine
  • Excessive oil consumption between services
  • Oil warning light
  • Loss of power or sudden engine failure
  • Metal/rubber debris in oil

How to Fix

Strictly follow the (shortened) oil-and-belt service interval with the correct low-SAPS oil; replace the wet belt, tensioner and oil pump strainer preventively (many indies convert/replace early). If oil consumption or belt debris is found, submit a claim through the Stellantis PureTech compensation portal / authorised dealer; catastrophic failures require a full engine rebuild or replacement.

What you need to fix it

Only diagnosis- and fitment-reviewed repair parts are linked here.

  • INA 530 0856 10 PureTech timing-belt and water-pump kit

    Confirm Opel Mokka VIN, engine code and current belt/chain configuration.

    OnlineCarParts UK
  • Laser 7317 PSA wet-belt inspection gauge

    Use only with the manufacturer procedure and correct engine; it does not apply to chain-equipped engines.

    eBay UK

As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.

Typical repair cost:$700 - $6,000

Research This Issue

GoogleRedditYouTubeNHTSA
Community Reported
High ConfidenceVerifiedReviewed Jun 2026
🔧
A mechanic who knows YOUR exact car
Answers tuned to your year, make, model & trim — not generic advice. Save your garage so it always has the right context.
Get ahead of Opel Mokka problems — free
Leave your email and we'll alert you the moment there's a new recall or known issue for your Opel Mokka. Free, no account needed.

Don't see your problem? Describe your symptoms to get a diagnosis, or get a full repair guide.

Other Opel Models

Opel Agila10Opel Zafira9Opel Corsa9Opel Astra9Opel Movano9Opel Combo9

Frequently Asked Questions

What are the most common Opel Mokka problems?

According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2021 Opel Mokka has 3 documented issues. The most frequently reported are: 1.2 PureTech Wet Timing Belt Degradation / Failure (Mokka B), Mokka-e Onboard AC Charger (Mahle 11kW) Failure, Mokka-e 12V Auxiliary Battery Drain. Of these, 2 are rated critical and should be addressed promptly.

Is the Opel Mokka reliable?

The 2021 Opel Mokka has 3 known issues compiled from NHTSA recalls, manufacturer TSBs, and owner forum reports. 2 issues are rated critical: 1.2 PureTech Wet Timing Belt Degradation / Failure (Mokka B) and Mokka-e Onboard AC Charger (Mahle 11kW) Failure. Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.

How much does it cost to fix common Opel Mokka problems?

Repair costs for known Opel Mokka issues range from $0 to $6,000, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, 1.2 PureTech Wet Timing Belt Degradation / Failure (Mokka B), typically costs $700-$6,000 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.

What is the 2021-2025 Opel Mokka 1.2 PureTech Wet Timing Belt Degradation / Failure (Mokka B)?

The second-generation Mokka B (built on the Stellantis CMP platform) uses the PSA/Stellantis 1.2 PureTech (EB2) three-cylinder turbo with a 'wet' timing belt that runs submerged in engine oil. Fuel dilution and oil contamination cause the belt rubber to break down prematurely; sh… Repairs typically run $700-$6,000. Severity: high.

What is the 2021-2024 Opel Mokka Mokka-e Onboard AC Charger (Mahle 11kW) Failure?

The electric Mokka-e (and Corsa-e platform sibling) suffers from failures of the Mahle 11 kW three-phase onboard charger (OBC). When it fails, the car can no longer AC charge from a home wallbox or public AC point (often showing 'charging at 0 miles per hour' or charging briefly… Repairs typically run $0-$2,500. Severity: high.

Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.

Data compiled from NHTSA recalls, manufacturer TSBs, automotive forums, and AI-assisted research. No aggregated owner-report counts available for this vehicle yet.

What is the 2020-2024 Opel Mokka Mokka-e 12V Auxiliary Battery Drain?

Mokka-e (and closely related Corsa-e, Peugeot e-208, DS 3 Crossback E-Tense — all CMP/eCMP platform) drains the 12V AGM auxiliary battery during long parking spells, leaving the car unable to wake or charge. Owners report drain as fast as 3-5 days of inactivity. The MyOpel smartp… Repairs typically run $0-$350. Severity: medium.