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BMW G26 i4 common problems
2022–present · i4 eDrive35 / eDrive40 / xDrive40, i4 M50 / M60 (Electric). The known weak spots of the engines used in the G26, with sources, plus the topics that come up most in BMW's service bulletins and NHTSA recalls for this chassis.
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Electric drive
i4 eDrive35 / eDrive40 / xDrive40 (2022–present), i4 M50 / M60 (2022–present)
12-volt battery, charging and software faults
On BMW EVs, many bulletins cover the 12-volt battery, charging equipment and control-unit software rather than the motor or high-voltage battery.
BMW bulletins on file for the G26:
- SIB 61 33 23 Electrical system service campaign Electrical system service campaign on BMW G26/G70 models (2023–2024); BMW repairs affected cars free under a service campaign. Service campaign · Jul 2025
- SIB 61 18 24 Battery leak Battery leak on BMW G26/G60/G70 models (2024); BMW gives an inspection and repair procedure. Service campaign · Sep 2024
- SIB 61 22 24 Battery failure Battery failure on BMW G05/G06/G07/G20 and other models (2024); BMW repairs affected cars free under a service campaign. Service campaign · Oct 2024
Most frequent bulletin topics 227 bulletins
| Topic | Bulletins | Examples |
|---|---|---|
| Central display | 9 | SIB 65 20 25, SIB 65 20 26 |
| Battery | 7 | SIB 61 18 24, SIB 17 01 24 |
| Instrument cluster | 5 | SIB 12 05 23, SIB 61 20 23 |
| Navigation | 5 | SIB 65 28 25, SIB 65 21 24 |
| Key fob | 4 | SIB 61 04 21, SIB 65 17 24 |
| Steering squeak | 4 | SIB 32 01 23, SIB 31 02 23 |
| Trunk lid | 4 | SIB 51 07 25, SIB 51 18 23 |
| Door | 4 | SIB 41 05 25, SIB 51 04 23 |
BMW service bulletins and warranty extensions filed with NHTSA that list the G26, grouped by topic. A bulletin tells technicians how to diagnose and fix a known issue; it doesn't mean every car has the problem.
NHTSA recalls by component 12
- positive battery cable connection · 1 recall25V906
- electric drive motor software · 1 recall25V395
- high-voltage battery cell module · 1 recall25V470
- left rear side beam · 1 recall24V611
- high-voltage battery module · 1 recall24V135
- high voltage battery combined charging unit (ccu) · 1 recall23V449
- high-voltage battery cell monitoring circuit · 1 recall23V295
- body domain controller (bdc) ECU · 1 recall23V118
Matched from NHTSA's public recall file by model and model year. Recall repairs are free; check a VIN.
BMW warranty extensions that list the G26
- SIB 01 01 26 EVAP system warranty extension EVAP system warranty extension on B46/B48/B58 engines (2020–2025); BMW extended the warranty on this part for eligible cars. Warranty extension · May 2026
- SIB 51 12 23 Body fault codes Body fault codes on BMW G05/G06/G07/G20 and other models (2020–2025); BMW extended coverage for eligible cars. Warranty extension · Jul 2025
- SIB 66 07 25 Electrical system warranty extension Electrical system warranty extension on BMW G05/G06/G07/G09 and other models (2024); BMW extended the warranty on this part for eligible cars. Service bulletin · May 2025
- SIB 01 14 23 Crankcase vent valve (PCV) warranty extension Crankcase vent valve (PCV) warranty extension on BMW G01/G02/G11/G12 and other models (2016–2021); BMW extended the warranty on this part for eligible cars. Service bulletin · Nov 2023
If a car qualifies, the listed repair may be free. Check eligibility for the VIN with a BMW center.
Sources: BMW service bulletins and recalls filed with NHTSA (public data) and the specialist and owner write-ups linked above. Not affiliated with BMW.