2018 Bmw M4 problems, complaints & recalls
Most-reported problem areas: Fuel/Propulsion System (4) · Engine (1) · Back Over Prevention: Sensing System: Camera (1)
Safety recalls (1)
Seat Belts:front 2017-08-16 · campaign 17V507000 · 67 vehicles
Defect: 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.
Fix: 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.
Service bulletins (135)
Technical service bulletins are repair instructions manufacturers send dealers for known issues. Unlike recalls, the fix is not automatically free — but naming the bulletin at the service desk can save diagnosis time and support goodwill repairs.
Structure:body 2026-09-03 · B010826 · Warranty Program/Extension
the coverage period for qualifying lower rear side panel water drain repair that addresses the issues described in the service information bulletin has been extended to 15 years / 150,000 miles, as determined from the original first in-service / delivery date.
Service Brakes 2025-09-09 · B064725 · Other
protection plate return
Service Brakes 2025-01-14 · B340921 · Service Bulletin/Repair Instructions
a turbine-like noise can be heard from the rear axle while deceleration during the first 300 miles of operation when braking from low speed.
Electrical System 2024-01-11 · B611305 · Service Bulletin/Repair Instructions
the electrical system of bmw vehicles has been subject to an ongoing development process over the last few years. this has led to increased demands being placed on the battery. this document covers important information for the dealer on how to handle ã¢ââdischarged batteryã¢ââ complaints.
Suspension 2024-01-09 · B310124 · Service Bulletin/Repair Instructions
with the vehicle is on a lift and the front struts are in the extended position, there may be a cracking and orclicking type noise when turning the steering wheel left/right. see attached video v31 01 24. the sound can reoccur when the vehicle is lowered, and the wheels are once again under load. t
Service Brakes, Hydraulic 2023-10-13 · B340714 · Service Bulletin/Repair Instructions
functional noises (squealing/honking) when braking shortly before the vehicle comes to a stop. cause material-
Showing the 6 most recent of 135 bulletins. Search all of them free at nhtsa.gov.
What owners report
2026-08-17 · Back Over Prevention: Sensing System: Camera · 61,000 mi“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 nhtsa campaign number: 19v684000 (back over prevention) as a possible cause for the failure; however, the vin was not included in the recall repair. the dea…”
2024-08-29 · Fuel/Propulsion System“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 b…”
2024-08-26 · 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 …”
2023-08-31 · Fuel/Propulsion System“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 …”
2023-07-14 · Fuel/Propulsion System“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. …”
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.