Most common 2018 BMW M4 problems
Share of the 6 complaints; one complaint can involve more than one system. "~" is the median mileage when the problem started.
BMW M4 complaints by model year
Best M4 years: 2014, 2017, 2020. Years to avoid: 2016. Compare all years →
2018 BMW M4 recalls (1)
Seat belts › Front
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.
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.
What 2018 BMW M4 owners say
Fuel & propulsion system
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. …
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 …
2018 BMW M4 engines & fuel economy
| Engine | Transmission | Drive | MPG city / hwy / combined |
|---|---|---|---|
| 3.0L 6-cyl turbo | 6-speed manual | RWD | 17 / 25 / 20 |
| 3.0L 6-cyl turbo | 7-speed dual-clutch | RWD | 17 / 24 / 20 |
EPA ratings. Class: Subcompact car.
Frequently asked questions
Is the 2018 BMW M4 a good car?
Based on 6 owner complaints filed with NHTSA, the 2018 M4 rates average: about as many complaints as a typical year of the M4 at the same age. Complaint counts don't account for sales volume or individual maintenance, so have any used car inspected before buying.
What is the most common problem with the 2018 BMW M4?
The fuel & propulsion system — 4 complaints, 67% of all complaints for this model year. Next are the engine & cooling (1) and driver assistance (1).
How many recalls does the 2018 BMW M4 have?
There is 1 recall for the 2018 BMW M4, the most recent from August 16, 2017 (front). Recall repairs are free at any authorized dealer — check whether yours has been done with the VIN recall check.
What are the best and worst years of the BMW M4?
The best years by complaints, compared at the same age, are 2014, 2017 and 2020. Years to avoid or approach with caution: 2016. See the full BMW M4 years comparison.
At what mileage do 2018 BMW M4 problems happen?
The median mileage reported in complaints is about 61,000 miles; 0% of problems with a recorded mileage started before 50,000 miles.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.