There are 13 owner-reported fuel system complaints for the 2018 BMW 3 Seriesin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
The contact owns a 2018 BMW 330I. The contact stated that while driving at various speeds, the engine overheating message was displayed on the instrument panel with the temperature gauge rising to hot(H). The vehicle was taken to an independent mechanic where the coolant reservoir was topped off however, the failure persisted. The contact then received notification of NHTSA Campaign Number: 21V907000 (Fuel System, Diesel) which was linked to the failure. The vehicle was taken to the dealer where the recall repair was performed. The contact stated that recently the vehicle began to leak coolant. The vehicle was taken back to the dealer and the contact was informed that the manifold needed to be taken off to perform a diagnostic test. The contact was informed that the oil filter housing unit and the water pump both needed to be replaced. The manufacturer was notified of the failure and transferred the contact to the NHTSA Hotline to report the failure. The vehicle remained in the possession of the dealer unrepaired. The failure mileage was approximately 60,150.
The contact owns a 2018 BMW 328D. The contact stated while driving 50 MPH, the vehicle started shuddering significantly. The contact was able to pull over and the check engine warning light illuminated. The vehicle was towed to the contact's workplace. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was made aware of the failure and informed the contact that there was no record of a recall on the VIN. However, the contact stated that he received notification of NHTSA Campaign Number: 21V586000 (FUEL SYSTEM, DIESEL). The vehicle remained at the workplace and had not been driven since. The approximate failure mileage was 102,000.
Gas tank began leaking from top of blind flange, similar to other extended warranties (SIB 01 03 22 and SIB 01 07 22). BMW is refusing to cover my specific model year (I have sent letters requesting reimbursement and called multiple times). It created an explosion hazard in my garage. Had mechanic repair, I do not have part. Cost $2,000 for new tank that will probably develop same issue. There were no warning lamps.
My 2018 BMW 330i has the same problem that the recall for the fuel sensor level on 2018 BMW M5! I broke down on the side of the interstate and had it towed to BMW and they said it was the fuel sensor reading more than it should and wanted to charge almost 3,000 to fix it. There are similarities to the other recalls and my vehicle should also be included in that recall. I had to pay 300.00 just for them looking at it. I found it odd the sensor would do that and my investigation has brought me here. There was no warning and I was stranded on the interstate
Fuel Tank Filler Hose Collapse - unable to refuel and vehicle remains stranded.
The contact owns a 2018 BMW 320I. The contact stated that while the vehicle was parked for a while, upon starting the vehicle, there was an abnormal fuel odor detected. The contact stated that the fuel tank ventilation warning light was illuminated. The vehicle was taken to an independent mechanic who informed the contact that the failure was due to the fuel tank ventilation and power management system. The vehicle was taken to the local dealer where it was diagnosed with a fuel system malfunction. The vehicle was not repaired. The manufacturer was contacted, and the contact was referred to the NHTSA Hotline. The approximate failure mileage was 47,000.
In Feb 2022 my vehicle reported low coolant and later the engine overheating. At one point the accelerator pedal became less effective and the car significantly slowed down while on the highway. After refilling the car's engine coolant and still getting alerts, I brought the vehicle to the BMW auto shop where it was determined there was an active coolant leak from the hose of the cylinder head expansion tank. The hose was then replaced. Today I visited the same BMW auto shop where they reported an open recall on this exact issue, yet I do not see an open recall on this site. Please investigate as others may be having this faulty equipment safety issue with risk of engine overheating/fire.
Coolant fluid exits from the expansion tank into the overflow leaving no fluid in the expansion tank. Then it causes and overflow/steam to burst out of the overflow tank. Then the coolant is low notification comes on which warrants to replace the coolant fluid. Took it to a few BMW dealers. They've did a flush, replace expansion tank, and water pump, also tested the pressure several times at 2 different BMW dealerships. I leave the dealership broker and with the same problem starting again within that week. This has been a constant issue which never seems to be fixed by any BMW dealer.
The contact owns a 2018 BMW 328D. The contact was informed by a third party that his vehicle was included in NHTSA Campaign Number: 21V568000 (Fuel System, Diesel) however, the part for the recall repair was unavailable. The dealer was made aware of the issue and informed the contact that the part was not yet available. The manufacturer had been notified of the issue. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The contact had not experienced a failure. VIN tool confirms parts not available.
The contact owns a 2018 BMW 328d. The contact received notification of NHTSA Campaign Number: 21V586000 (Fuel System, Diesel) however, the part to do the repair was unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The local dealer was contacted and confirmed that parts were not yet available. The manufacturer was made aware of the issue. The contact had not experienced a failure. VIN tool confirms parts not available.
The contact owns a 2018 BMW 328D. The contact stated that the vehicle failed to start up without warning. Due to the failure, the contact had the vehicle towed to an independent mechanic who was unable to diagnose the failure. The vehicle was then towed to a dealer where they replaced the fuel pump; however, the fuel pump failed during the test drive. The contact was also informed by the dealer that the vehicle was included in NHTSA Campaign Number: 21V586000 (Fuel System, Diesel) however, the part for the recall repair was unavailable. The manufacturer had not been notified of the failure. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The failure mileage was unknown. The vehicle remained in the possession of the dealer. VIN tool confirms parts are not available.
The contact owns a 2018 BMW 328D. The contact stated while driving 50 MPH, the vehicle inadvertently stalled. An unknown warning light illuminated the instrument panel. The contact veered to the side of the road. The vehicle was towed to the dealer to be diagnosed. The contact was informed that the high-pressure pump had exploded, and the explosion had damaged other parts of the vehicle. The contact stated the vehicle was repaired. The contact received a recall notification for NHTSA Campaign Number: 21V586000 (Fuel System, Diesel) however, the part for the recall repair was not yet available. The manufacturer was notified of the failure. The contact stated recall has been repaired. The approximate failure mileage was 34,914.
CAR WAS IN MOTION ON A STREET. ENGINE STALLED. CAR WOULDN'T START. TOWED TO BMW DEALERSHIP. CATASTROPHIC HIGH PRESSURE FUEL PUMP FAILURE AT APPROXIMATELY 7400 MILES. METAL SHAVINGS THROUGHOUT ENTIRE FUEL SYSTEM. INJECTORS, FUEL LINES, FUEL PUMP, AND FUEL TANK NEEDED TO BE REPLACED.
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 26, 2026