10.0

really awful
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
0 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2018 BMW M4 fuel system problems

fuel system problem

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2018 BMW M4 Owner Comments

problem #2

Aug 062023

M4

  • miles

A D V E R T I S E M E N T S

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. I advised BMW of North America requesting they pay for the replacement, that this should have been a recall issue due to the dangers of this problem (other BMW vehicles with this defectively designed fuel tank could leak, cause fire, injury, or death), and BMW should not be waiting and hoping that no one reports the problem or only replacing the fuel tank once someone has a fuel leak and the possibility of severe injury and death. BMW explained that only NHTSA can issue recalls and BMW won't do anything proactively despite knowledge of the fuel tank design defect resutling in fuel leaks. There were no warnings - only the strong smell of gas while driving.

- San Antonio, TX, USA

problem #1

Jul 132023

M4

  • miles
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. Safety is put at risk because the gar is leaving right next to the exhaust, which can easily catch fire to the car, myself, and other drivers on the road. I was getting a misfire on my car and realized the engine wasnt getting enough fuel, on my way home from filling gas I got a check engine light and a notification in my car saying -??drivetrain malfunction-??

- Orlando, FL, USA

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