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2018 BMW M4 problems

The most common problem on the 2018 BMW M4 is fuel and propulsion system. It has 3.0 times the complaints of a typical M4 model year.

Typical year3.0x the typical complaints
Owner complaints
6
Recalls
1
Service bulletins
1351 warranty
Worst area
Fuel system

The worst 2018 BMW M4 problems

Ranked by number of owner complaints. Mileage and cost come from what owners wrote.

  • Fuel system
    4
  • Driver assistance
    1
  • Engine
    1

Problems by type

Tap a problem to see which part fails, at what mileage and in which other years.

  • Fuel system
    4
  • Driver assistance
    1
  • Engine
    1

Recalls 1

Seat belts: frontReported August 16, 2017 · 67 vehicles affected
What is wrong
BMW of North America, LLC (BMW) is recalling certain 2018 430i, 430i xDrive, 440i, 440i xDrive, and M4 convertible vehicles. The Emergency Locking Retractors (ELR) within the front seat belt assemblies may have been produced with incompatible vehicle-sensitive locking mechanism housings.
Risk
If the vehicle has an incompatible vehicle-sensitive locking mechanism, the seat belt may not restrain the seat occupant in the event of a crash, increasing the risk of injury.
Remedy
BMW will notify owners, and dealers will inspect and, if necessary replace, the front seat belt assemblies, free of charge. The recall began October 13, 2017. Owners may contact BMW customer service at 1‑800‑525‑7417.

Recall number 17V507000 · Recall details

See all 1 recalls for the 2018 BMW M4

Technical service bulletins for the 2018 BMW M4 135

Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.

See all 135 bulletins for the 2018 BMW M4

What 2018 BMW M4 owners say

Most recent owner complaints, unedited.

Filed Aug 17, 2026 · Driver assistance · 61,000 miles · SC

The contact owns a 2018 BMW M4. The contact stated that while reversing, the rear-view camera became inoperable, preventing the contact from safely reversing the vehicle. The contact referenced the federal safety agency Campaign Number: 19V684000 (Back Over Prevention) as a possible cause for the failure; however, the VIN was not included in the recall repair. The dealer was notified of the failure. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 61,000.

Filed Aug 29, 2024 · Fuel system · FL

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.

Filed Aug 26, 2024 · Fuel system · TX

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. I could've easily caught fire and cause harm to myself and so many others. Has the problem been reproduced or confirmed by a dealer or independent service center? I had it towed immediately the next day to a BMW dealership, and they stated the seams of the fuel tank are leaking. How is that possible, that's a manufacturing issue. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? Only the BMW dealership, they won't have anyone else look at it. Slapped me with a $3,489 repair estimate, and that's it. Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? There were literally no lamps, alerts, lights or indicator to tell me something was wrong. The car could've exploded on me. I still have the federal emissions warranty active and they are saying it doesn't cover a fuel tank.

Filed Aug 31, 2023 · Fuel system · TX

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 the federal safety agency 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.

Filed Jul 14, 2023 · Fuel system · FL

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”

Filed Dec 18, 2019 · Engine · MD

Crank hub issue

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Questions about the 2018 BMW M4

Is the 2018 BMW M4 reliable?

Owners have filed 6 complaints about the 2018 BMW M4, 3.0 times a typical M4 model year.

What is the most common problem with the 2018 BMW M4?

Fuel and propulsion system, with 4 complaints. Next is driver assistance (1).

How many recalls does the 2018 BMW M4 have?

1 recall, covering seat belts.

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