2018 Bmw 440i problems, complaints & recalls
Most-reported problem areas: Structure:body (1) · Seat Belts (1) · Electrical System (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 (190)
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.
Engine 2026-05-05 · B010224 · Warranty Program/Extension
the evap systems purge (vent) valve limited warranty for defects in materials or workmanship has been extended to 15 years / 150,000 miles as determined from the original in-service date.
Visibility:power Window Devices And Controls 2024-01-16 · B510819 · Service Bulletin/Repair Instructions
the basic conditions for initializing the power windows are not met.
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.
Engine And Engine Cooling 2023-11-13 · B011423 · Service Bulletin/Repair Instructions
pressure control valve (pcv) extended ltd wty 15 years/150,000 miles
Structure 2023-11-08 · B513218 · Service Bulletin/Repair Instructions
the paint finish on the door jamb (above the door striker) is scratched due to the inner door cavity window seal.
Showing the 6 most recent of 190 bulletins. Search all of them free at nhtsa.gov.
What owners report
2026-05-02 · Unknown Or Other“there is already an sib 513316 out on similar defects. sloshing noises/water in pax compartment due to rain water intrusion that has caused damage in electronic modules in the trunk due to a defective drainage system--holes are not large enough. failure of control units located in damaged area--which are no longer functioning such as convertible …”
2023-12-01 · Electrical System“- my car started having intermittent electrical issues. the first warning something was wrong was always the cars instrument cluster would start flashing, and the audio system would also drop in and out. then later other malfunctions would start to show up on the center nav screen, some of the warnings are listed here : ○ audio/speakers would cut o…”
2022-04-26 · Air Bags · 36,900 mi · 💥 crash“the contact owned a 2018 bmw 440i. the contact stated that while driving at 65 mph, the vehicle crashed into a donkey. there were no airbags deployed upon impact. the windshield glass shattered and hit the contact's face. her boyfriend's knees hit and cracked the passenger's side dashboard, and her daughter sustained bruises on her right side from …”
2022-04-23 · Unknown Or Other“my husband bought a bmw through the military sales program, had it delivered to the united states, and we took it with us to germany where we currently live. the car is made to u.s. specifications and i had been driving the car weekly in germany to keep the battery running while he is away on a deployment. on april 11, 2022, as soon as i pressed t…”
2021-11-16 · Seat Belts · 💥 crash“i was rear ended. my airbag did not deploy. i do not think my seatbelt restrained me because i was not sore in that area, but do not remember. my head hit the stearing wheel. i spent 3 months in a neuro-recovery program and still deal with post-concussive syndrome. the car is available for whomever would like to see it. i incurred a closed head…”
2020-11-09 · Structure:body · 52,300 mi“while driving on a local parkway, our sunroof spontaneously exploded. we were not passing under anything and nothing of any noticeable size struck the car or the sunroof. there was a very loud bang, and when we pulled over, we discovered a large hole in the sunroof. there were shards of glass sitting atop the sunroof cover, which had we not had clo…”
2018-06-05 · Unknown Or Other · 900 mi“i have driven the car now about 900 miles. at no time has the front end collision/pedestrian warning system given me any warning even though i have nearly rear-ended the car ahead and even though i have it set for the earliest warning possible. bmw n.a. assist customer care states that i should receive both visible and audible warnings but also st…”
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.