2018 BMW 640Xi

Routine

Owners filed 6 complaints about this vehicle with federal regulators, most often about the unknown or other. No safety recall has been issued.

What fails
ComponentReportsCrashesFiresInjuries
Unknown or Other2
000
Air Bags2
000
Visibility/Wiper1
000
Vehicle Speed Control1
000

What owners reported

Newest filings
Vehicle Speed Control
Filed Jun 22, 202660,448 milesCA

The contact owns a 2018 BMW 640XI. The contact stated that while pulling up to a red traffic light, the brake pedal was depressed; however, the engine revved unexpectedly, and the vehicle unintendedly accelerated and drove forward approximately 3-feet. The contact turned the vehicle off and restarted the engine and the engine continued to rev very high. The vehicle was restarted a second time and the unintended revving ceased and the vehicle operated normally. The following morning the vehicle was driven to the local dealer. The cause of the failure was not determined. The contact stated that the failure had occurred on one previous occasion. The manufacturer was notified of the failure. The failure mileage was 60,448.

Unknown or Other
Filed Mar 19, 2026CT

I hear a crackling or a popping sound coming from the windshield area as I’m driving. It is irregular and going over bumps seems to trigger it but yesterday as I was driving on a smooth highway with no vehicles nearby I heard a deafeningly loud crack sound. Then I noticed a tiny crack in the windshield. The sound was so loud that I considered it a potential accident inducing distraction as it really frightened me for a few seconds. Again it couldn’t have come from an outside projectile as there were no vehicles nearby and the highway surface was perfectly free of pebbles or debris.

Air Bags
Filed Aug 26, 2024MD

My BMW's passenger side airbag malfunction light randomly came on and will not turn off. When I went to the dealer, BMW quoted apprx. $3000 to replace the seat sensor mat which they said probably got wet? No water was ever on the seat and no passenger sits there - just my purse. I feel this is a safety related defect after seeing numerous reports and complaints online and trying to fix the issue. The warning message also blocks other important information on my dashboard.

Air Bags
Filed Mar 31, 2024MD

Consistent passenger restraint / passenger airbag failure warning. Took vehicle to BMW dealership and was told that the passenger seat must have moisture damage, causing the issue. There have been no spills or leaks in the vehicle. Quoted $2600 to fix. See attached. Vehicle’s safety in question.

Unknown or Other
Filed Dec 7, 2023CA

When opening the Panoramic Sunroof while driving, the curtain would not retract and sagged. It totally blocks the rear view and there is no way to fix it while driving. also if you have a car seat facing the rear, the curtain would falls onto baby's face and potentially cause suffocation

Visibility/Wiper
Filed Sep 21, 2023FL

Moonroof shade failure. Droops, blocking rear window visibility while driving. Happened with no warning. Will bring to service center for inspection.

6 of 6 complaints, reproduced as filed.

Across model years

Worst on record: 2018
YearComplaintsRecallsFiresDeathsAssessment
20192000Routine
2018 — this page6000Routine

Compare every 640Xi year →

Reading this record

No unusual pattern of severe incidents in the complaint record.

Complaint counts track how many cars were sold and how long they have been on the road as much as they track quality. A common model from 2013 has had a decade to accumulate reports; a rare one from last year has not. The signal worth weighing is in the severity columns, in whether the same component keeps appearing, and in whether the manufacturer eventually opened a recall for it.

Most recent recall on file: none. Source: NHTSA Office of Defects Investigation.