1994 BMW 540I Engine cooling Problems
- Complaints
- 4about this part
- Share
- 50%of 8 total for the year
- Median mileage
- 84,500miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 4 complaints about the engine cooling of the 1994 BMW 540I, 50% of the 8 complaints for this model year. Where a mileage was given, the median is 84,500 miles. 1 recall campaign on record is filed under a similar system.
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.
“To whom it might concern. My Bmw 540I was diagnosed for compression loss by the local Bmw authorized dealer. According to the dealer, the cause is extended sulfur content used in the us gasoline. The sulfur causes a chemical reaction with the used engine block alloy (nikasil) and erodes prematurely. Current mileage is 99'000 miles. This is far below any service life expectancy standard for a quality make/brand car (engine). Bmw wants to hold their customers responsible for damage caused by a design flaw. …”
NHTSA complaint #10000531, filed 2003-01, 87,000 miles“When shifting into reverse, there is a hesitation before transmission shifts in. Hesitation time is increasing. Also, when stepping on pedal for aggressive acceleration or passing, vehicle hesitates, then clunks violently into gear. Mechanics have stated that it is a common problem that they see with this vehicle and transmission. Solution is to replace with a brand new transmission(parts cost $5000.00).nothing done yet to remedy problem due to incredible cost. Also, shift lever safety button no longer works, allowing vehicle to be accidentally shifted out of driving gear into other gears. …”
NHTSA complaint #10155238, filed 2006-04, 82,000 miles“Bmw with m60b30 and m60b40 v'8 from 93-95 engines have been known to suffer damage to the cylinder bores from excessive amounts of sulpher in us fuels. The blocks were made of nikasil. The problem represents itself as an excessively high idle which my car has. Bmw initiated an engine warranty, covering all internal lubricated parts, which includes the short block for 100,000, or 6 years. I took my car to be checked and this is when I discovered( based on a compression test) it has the problem Bmw knew about. …”
NHTSA complaint #746883, filed 2001-06Related recalls
- 98V178000Aug 4, 1998Vehicle description: passenger vehicles. A malfunction or failure of a coolant system component, such as a thermostat, water pump, or fan belt, can result in…Covers: BMW 540I 1989–1995, 735I 1988–1995, 735ILA 1988–1995 +28 more
Engine cooling: other model years
Other parts of the 1994 BMW 540I
4 complaintsSeats
2 complaintsInterior lighting
1 complaintsVehicle speed control
1 complaints
← All problems reported for the 1994 BMW 540I
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.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology