2018 BMW M4 Fuel system Problems
- Complaints
- 4about this part
- Share
- 67%of 6 total for the year
- Median mileage
- —not reported
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 4 complaints about the fuel system of the 2018 BMW M4, 67% of the 6 complaints for this model year.
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.
“The fuel tank was leaking a substantial amount of fuel. Yes it is. Our safety was put at risk due to the fuel leak. Any small spark, overheating or if somebody threw a cigarette butt out of their window could have ignited our car. BMW informed me to immediately cease driving the car and bring to the dealership right away. Problem was confirmed by dealership as stated on the attached invoice. No, no warning or indicator lights were present.”
NHTSA complaint #11611640, filed 2024-08“I think the fuel tank has cracked on the upper portion of the tank. I noticed a smell of gas on my way home from filling gas and when I got home I realized there was a puddle of gas sitting underneath my car. I jacked up the car and inspected the underneath and saw nothing, I noticed the gas was leaking from a higher spot, somewhere I couldnt see. Ive read on forums that its happened before to a few other people and someone personal that I know. Yes the car can be inspected upon request. …”
NHTSA complaint #11532209, filed 2023-07“Fuel tank was leaking. I brought it in to BMW of San Antonio who found the left side top area of fuel tank leaking fuel from the sealed portion. Heat caused the top of fuel tank to expand and crack. BMW of SA required me to buy a replacement fuel tank. When I said, if I buy the replacement fuel tank, won't this issue keep reoccurring every time it gets hot. The tech advised that BMW was aware of the problem and designed the replacement fuel tanks differently, so that the fuel tanks won't expand and crack in the same manner. …”
NHTSA complaint #11541854, filed 2023-08“What component or system failed or malfunctioned, and is it available for inspection upon request? Fuel Tank on my BMW under 50k miles started leaking after a fill up. How was your safety or the safety of others put at risk? I didn't notice any leaks at the gas station but once I got home, pulled in my garage I noticed the smell of fuel, figured I just spilled a bit. I left my car to go get ready, once I came back the garage was filled with gas fumes. I looked under the car and saw a decently large puddle under the driver side. I live in Texas where it was quite warm that day. …”
NHTSA complaint #11610911, filed 2024-08Related service bulletins
- 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.
- 10151079Feb 1, 2016SI B13 03 15 February 2016 Fuel Systems Technical Service This Service Information bulletin supersedes SI B13 03 15 dated March 2015 and replaces SI B13 04 13 dated March 2014…
Fuel system: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2018 | 4 | 67% |
| 2016 | 4 | 18% |
Other parts of the 2018 BMW M4
← All problems reported for the 2018 BMW M4
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