2018 BMW 330I Fuel system Problems
- Complaints
- 5about this part
- Share
- 16%of 32 total for the year
- Median mileage
- 60,150miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 5 complaints about the fuel system of the 2018 BMW 330I, 16% of the 32 complaints for this model year. Where a mileage was given, the median is 60,150 miles. 1 a fire, according to the filers.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“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”
NHTSA complaint #11587129, filed 2024-05“On January 19, 2022 I was driving and then smoked filled inside my car and the outside engine was smoking and a light came on that said check coolant. BMW service took me in that day and they said my coolant broke. They removed it and replaced it. They did not understand how the coolant broke but I paid for the service and parts and moved forward. On November 25, 2022 I went into the same BMW service center to get a routine car service and they stated there was a recall and they would replace my coolant for free. (After I told them I paid for it ($699.63) . …”
NHTSA complaint #11497221, filed 2022-12“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. …”
NHTSA complaint #11479668, filed 2022-08“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. …”
NHTSA complaint #11641715, filed 2025-02, 60,150 miles“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.”
NHTSA complaint #11626777, filed 2024-11Related service bulletins
- 10230717Dec 1, 2022For the eligible vehicles, BMW of North America, LLC (BMW NA) is extending the limited warranty for the vehicle's Fuel Injectors to 10 years/120,000 miles as determined by the…
- 10212788Apr 1, 2022The quick disconnect coupling on the cylinder head coolant vent line could break at the cylinder head. This would lead to loss of coolant from the engine.
- 10212780Apr 1, 2022Component and Issue Specific Limited Emission Warranty Extension. This bulletin is notice of a limited emission warranty extension. This is NOT a notice of a Recall or Service…
- 10214256Feb 1, 2022The quick disconnect coupling on the cylinder head coolant vent line could break at the cylinder head. This would lead to loss of coolant from the engine.
- 10178993Jul 1, 2020NOISES FROM THE FUEL TANK AT IDLE: All vehicles except the F48 (X1): While driving slowly with low RPM or while idling a faint knocking or fluttering noise can be heard from…
Fuel system: other model years
Other parts of the 2018 BMW 330I
12 complaintsOther or unknown
6 complaintsElectrical system
4 complaintsEngine cooling
2 complaintsVehicle speed control
2 complaintsBrakes
1 complaintsForward collision avoidance
1 complaintsSeat belts
1 complaintsSteering
1 complaintsBody and structure
1 complaintsTires
1 complaintsTransmission and drivetrain
1 complaints
← All problems reported for the 2018 BMW 330I
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 30, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology