⚠️ BMW manufacturer position
Follow BMW high-voltage safety procedures. Warranty excludes damage from improper fluids in charging or cooling systems.
Vehicle information
| Make | BMW |
|---|---|
| Model | i4 |
| Market status | Sold new in the UK 2021–present |
| Body styles | Gran Coupe |
| Generations | G26 (2021–present) |
| Engine options | Electric: Battery-electric — eDrive motors |
| Fuel tank capacity | Not applicable (electric) |
| Fuel system | No petrol or diesel system |
| Access method | Not applicable for fuel — cooling and brake fluid reservoirs have separate caps |
| Anti-siphon | Not applicable |
| Service portal | BMW ISTA / BMW TIS (aos.bmwgroup.com) |
Misfuel risk Not applicable
No fuel tank. Protect the CCS charging inlet from liquids; HV isolation required if contaminants enter electrical areas.
If the engine was not started
Not applicable for fuel — prevent starting/charging until inspection if charging port is contaminated.
If the engine was started
HV components may require replacement if energised with conductive contamination — dealer diagnosis only.
Access procedure
- If incorrect liquid enters the charging port, do not charge — contact BMW Assistance.
- Power down vehicle per HV disable procedure in TIS before inspection.
- Qualified technicians inspect inlet, HV cable, and related modules.
- Dispose of contaminated materials under hazardous waste duty of care.
Notes
- i4 M50 is performance BEV — no AdBlue
Related models
- i5
- 4 Series
Frequently asked questions
Can I misfuel a BMW i4?
There is no petrol or diesel tank. Risk is limited to adding the wrong fluid to the washer reservoir or other caps — never use the charging port for anything except charging.
What if petrol is poured into a BMW i4 charging port?
Do not charge. Isolate the vehicle, contact BMW roadside assistance or a high-voltage-qualified workshop. Contamination of HV components is a serious safety issue under COSHH and DSEAR controls.
Does wrong fuel affect BMW electric vehicle warranty?
Liquid contamination of electrical systems is not a manufacturing defect and is typically excluded from warranty. Document remediation by a qualified technician.
Is AdBlue relevant to the BMW i4?
Not applicable — this model has no diesel exhaust fluid system.
Need professional misfuel recovery?
Find a certified operator or read consumer guidance for your next steps.
Find an operator Consumer guidance