AI DamageBMW Z4 M40I: problems, complaints, bulletins
Summary for the BMW Z4 M40I across 3 model years: 1 owner complaints and 9 NHTSA service bulletins, plus repair videos. Pick a year for details.
Model years
What fails most often
- Engine: 1 complaints (100% of all); manufacturer bulletins for this component: 4.
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Engine | 1 | 0 | 4 |
| Electrical system | 0 | 0 | 3 |
| Seats | 0 | 0 | 1 |
| Structure | 0 | 0 | 1 |
| Suspension | 0 | 0 | 1 |
| Other | 0 | 0 | 1 |
What owners report
Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.
Car hesitate/stutters when cold and you try to accelerate from a standstill with partial throttle. No engine codes are set. BMW could not duplicate issue.
What to check before buying
- Engine. Cold start, unusual noises, oil leaks and engine codes.
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Seats. Occupant sensor, power adjustment, seat mounts.
- Structure. Rails, pillars, panel gaps, signs of pulling or welding.
Manufacturer service bulletins
Bulletin titles as filed with NHTSA.
- When getting in or out of the vehicle, a groaning noise can be heard from the opening (aperture) in the…
- The EVAP systems purge (vent) valve limited warranty for defects in materials or workmanship has been…
- When turning the steering wheel while stationary or when driving on uneven roads; cracking, creaking, or…
- Customers may report issues with the alarm system not functioning correctly
- When performing a vehicle test, diagnostic trouble code “ 8013FE Software run time error” is found in…
- Coolant is leaking from the oil filter housing
- Oil Line Return
- A groaning sound from the front of the vehicle while driving can be heard, particularly while cornering
- Central Information Display (CID) side of the Multifunction Display may intermittently black out
Other models of this make
Read also
Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-05.