Skip to content
Other or unknownPart report

2018 BMW X4 Other or unknown Problems

Complaints
2about this part
Share
18%of 11 total for the year
Median mileage
—not reported
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 2 complaints about the other or unknown of the 2018 BMW X4, 18% of the 11 complaints for this model year. 1 a fire, according to the filers.

Fewer than 15 complaints name this part, so treat the figures as a rough indication only.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“We heard a whining sound under the hood on November 1st, 2025. Prior to noticing this noise, there were no warming lamps or messages appearing. Following a short drive we smelled burning in the garage. We did not drive the vehicle the following day and intended to take it to our mechanic on Monday morning, the 3rd. Upon trying to start the car it was dead. We had to have it professionally jumped as standard jumping with our personal jumper cables would not start it. Our mechanic explained both the battery and the water pump would need to be replaced. …”

NHTSA complaint #11706580, filed 2025-12

“Water pump completely failed and no longer working. I had to pull off of road on a busy interstate. Firestone confirmed water pump no longer working. Vehicle is at BMW service center. No warning until vehicle overheated and warning came on.”

NHTSA complaint #11664164, filed 2025-06

Related service bulletins

Other or unknown: other model years

YearComplaintsShare of year
2023113%
2021117%
2020320%
2019218%
2018218%
2016110%
2015422%

Other parts of the 2018 BMW X4

Electrical system
7 complaints
Engine cooling
5 complaints
Engine
3 complaints
Brakes
1 complaints
Transmission and drivetrain
1 complaints

← All problems reported for the 2018 BMW X4

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 29, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology