RoadVitals

2018 BMW 540D Owner Complaints

Reports submitted to NHTSA by owners and drivers, shown in full

Data refreshed

Complaints on fileComplaints are reports submitted to NHTSA by owners and drivers. NHTSA does not verify most reports before publishing them, and a complaint does not establish that a defect exists. Volume is influenced by how many of a vehicle were sold, how long it has been on the road, and how much attention an issue has received.
3
Latest Jul 15, 2024
Crash or fire reportedComplaints whose submitter recorded that a crash or a fire occurred. These are the reporter's own answers on the NHTSA form, not verified findings.
0
Filed in the last 12 monthsReports filed with NHTSA in the trailing 365 days. Recent volume reflects attention and vehicle age as much as anything else.
0
Reports on file since Jul 20, 2022

What this page shows

Our database holds 3 NHTSA owner-reported complaints for the 2018 BMW 540D. Each one is a report filed by an owner or driver and published by NHTSA without most of them being verified. A complaint is not a confirmed defect, not a recall and not a manufacturer bulletin. Narratives are shown exactly as filed.

Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.

Complaints, most recent first

Showing 1–3 of 3

EngineFuel system
Filed Jul 15, 2024

The 540d has swirl flaps on the intake manifold to regulate air intake so it adjusts how much air the intake manifold feeds the engine. There's an actuator motor that connects to the swirl flap shaft that connects via a plastic linkage. When the linkage breaks, the flaps are no longer controlled by the actuator and stays in its semi closed state. The result is when you give it full throttle, it spews out plumes of black smoke that is thick and the equivalent to rolling coal on a deleted diesel truck. The car still runs, but this poses a danger to those behind you and not very environmentally friendly to spew out soot. BMW's solution is a $6,000 repair bill, because the entire intake manifold has to be replaced for that linkage. This will be a guaranteed fail again - considering I had a check engine light for swirl flap issues starting around 40K miles.

NHTSA ID
11602418
Incident
Jun 30, 2024
Airbags
Filed Mar 5, 2024

My passenger restraint system randomly faults. Problem with passenger seat mat. Many BMW owners have reported the issue. Should be recalled by BMW.

NHTSA ID
11575506
Incident
Sep 1, 2023
Engine
Filed Jul 20, 2022

There is an exhaust leak which has developed in the turbo. This causes untreated fumes and soot to be emitted in the engine compartment. This untreated exhaust makes its way into the passenger cabin, putting passengers at safety risk due to untreated exhaust fumes entering the cabin. The dealership has acknowledged the issue and describes it as follows: "The soot that you have seen and the smell is coming out of the wastegate shaft which by design there is a tolerance for it to move, but due to back pressure from the soot build up before the regen has occurred there is some soot that comes out." This problem happens every time I start and drive the car. The dealership is stating that this is not covered by the factory warranty. An exhaust leak like this is a serious passenger safety issue.

NHTSA ID
11474850
Incident
May 2, 2022

Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.

Data sources

Data on this page last refreshed .