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BMW 540IModel year report

2018 BMW 540I Problems

Complaints
31filed with NHTSA
Median mileage
8,150miles, 4 complaints with mileage
Recalls
2campaigns on record
Trend
RisingComplaints filed in the last 3 full calendar years are at least 25% higher than in the 3 years before.
NHTSA crash rating
—no overall rating published
EPA fuel economy
24 mpgcombined, 3.0L 6-cyl RWD · 21 city / 30 hwy

Sources: NHTSA records for the 2018 BMW 540I (complaints, recalls, investigations), EPA fuel economy. Report an error

NHTSA recorded 31 consumer complaints for the 2018 BMW 540I. The part named most often is air bags, with 14 complaints (45% of the total), followed by seat belts (11) and seats (10). 4 of the complaints include a mileage, and 100% of those were filed for vehicles with under 50,000 miles; the median is 8,150 miles. Of all complaints, 3 involved a crash, 2 an injury, according to the filers. NHTSA lists 2 recall campaigns and 286 technical service bulletins for this model year. Air bags complaints overlap with 9 technical service bulletins filed under the same part. Seat belts complaints overlap with 2 technical service bulletins filed under the same part.

Not compared (fewer than 3 comparable model years). Model years 2008–2023 of the same vehicle that have at least 25 complaints are compared, and a model needs at least 3 of them.

Which parts are reported most

Complaints can name more than one part, so the counts add up to more than the total. Select a part to see its complaints, recalls and bulletins.

Also reported: Suspension (1), Tires (1), Visibility (wipers, defrost, mirrors) (1), Wheels (1).

Example complaints

Air bags: “For a few months now, my car has been throwing a passenger restraint system malfunction error. It happens sporadically and only stays up for between 1 and 5 minutes at a time. It will happen whether the car is moving or not, and even sometimes as soon as I turn the car on. I have been submitting the telecommunications since it started. I tried to have it fixed by thompson Bmw, only to be told, like the other user who has this problem on here, that they think moisture is the culprit. …”

NHTSA complaint #11110925, filed 2018-07, 6,500 miles

Seat belts: “Constantly pops up a message for passenger restraint system malfunction. I had an accident where I swerved off the road into a ditch at about 60 mph. I the driver was not hurt and the passenger wouldn’t have been hurt either if it was for the passenger seat belt not locking correctly at first and then repeatedly locking and unlocking the entire time hurting his chest.”

NHTSA complaint #11641549, filed 2025-02

Seats: “i was just driving my bmw and a airbag light and a malfunction error popped up on my dashboard, that read that the Passenger restraint system has malfunctioned. and i was doing some research on what was wrong with my car, and all the forums are indicating that this is a very common issue on these cars due to a bad seat occupancy sensor mat. to fix this you either still have to have an extended warranty if you don’t have one you have to pay upwards of 3,000$ to get this part replaced at a dealer. …”

NHTSA complaint #11648020, filed 2025-03

Electrical system: “On and off system notification of Passenger Restraint System Malfunction with and without a passenger in the seat. Also, the Airbag off/disabled light on the instrument cluster illuminated. Can't seem to declare if it is an electrical shortage, seatbelt buckle related or passenger pressure sensor sensor in the seat. Find this to be a major safety concern should there be an accident, and unsure whether the airbags will deploy or not. BMW should investigate this concern.”

NHTSA complaint #11729268, filed 2026-04

Mileage when problems were reported

100% of the 4 complaints with a mileage were filed for vehicles with under 50,000 miles; the middle half falls between 6,500 and 9,800 miles.

75%0–100%10–2525%25–500%50–750%75–1000%100–1500%150+
Share of complaints by mileage when the problem was reported, in thousands of miles (4 complaints with mileage). Red bars: under 50,000 miles. Bucket widths differ. Median: 8,150 miles.

Complaints by year filed

Trend: rising. Complaints filed in the last 3 full calendar years are at least 25% higher than in the 3 years before.

20182020202220232024202582026
Complaints by year the complaint was filed with NHTSA. Red bars: the last 3 full calendar years used for the trend. The current year (2026) is partial.

Fuel economy and running cost

EPA ratings for each 2018 BMW 540I version. Annual fuel cost is the EPA's estimate at its current fuel prices for 15,000 miles a year (55% city driving).

VersionEngineTransmissionCityHwyComb.Fuel / yr
540i RWD3.0L 6-cyl8-speed automatic213024$3,400
540i xDrive AWD3.0L 6-cyl8-speed automatic202923$3,550

Source: U.S. EPA and Department of Energy, fueleconomy.gov. Ratings are for comparing vehicles; real-world mileage varies with driving and conditions.

Recalls and investigations

Recall details for the 2018 BMW 540I → · Check a VIN at nhtsa.gov/recalls

Technical service bulletins

TSBs are manufacturer notes to dealers about known repair procedures. They are not recalls and do not by themselves mean a vehicle has a fault. 286 on record; the latest 10 are shown.

See all 286 bulletins →

Other model years of the BMW 540I

YearComplaintsMedian miRecallsCrash ★MPGScore (50 = typical)Trend
20245—3—28—Too new
20236—1—27—Too new
20226—1—27—Not enough data
2021938,3506—26—Not enough data
20191216,6001—24—Not enough data
2018318,1502—24Not compared (fewer than 3 comparable model years)Rising
20172020,5001—24—Rising
2003792,0002—17—Not enough data
20021298,0002—16—Not enough data
20011589,0004—16—Stable
20003191,0002—16Not compared (before 2008)Rising
19992270,0001—16—Stable
19982650,9141—18Not compared (before 2008)Falling
19972776,3500—18Not compared (before 2008)Stable
19951080,2502—18—Not enough data
1994887,0004—17—Not enough data

All BMW 540I model years · Best and worst years by complaints

Frequently asked questions

How many NHTSA complaints does the 2018 BMW 540I have?

NHTSA recorded 31 consumer complaints for the 2018 BMW 540I as of Oct 28, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

What part of the 2018 BMW 540I is reported most often?

Air bags is named most often, in 14 complaints (45% of the total), followed by seat belts with 11.

Has the 2018 BMW 540I been recalled?

NHTSA lists 2 recall campaigns for this model year. To check a specific vehicle, enter its VIN at nhtsa.gov/recalls.

What gas mileage does the 2018 BMW 540I get?

The EPA rates the 2018 BMW 540I (540i, 3.0L 6-cyl) at 24 mpg combined, 21 city and 30 highway, with an estimated annual fuel cost of $3,400 at 15,000 miles a year. Other engine and drive versions are rated differently.

At what mileage are problems with the 2018 BMW 540I reported?

Among the 4 complaints that include a mileage, the median is 8,150 miles and the middle half falls between 6,500 and 9,800 miles; 100% were filed for vehicles with under 50,000 miles.

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 28, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate. Fuel economy is from the EPA and DOE (fueleconomy.gov).

Complaint counts come from NHTSA’s public complaint database; we count each complaint once. The source records for this vehicle are on nhtsa.gov. Scores and trends are our own summaries of that data, described in the methodology. This page is not legal, safety or repair advice: for a specific vehicle, check its VIN at nhtsa.gov/recalls and ask a qualified mechanic. See an error? Tell us.