Skip to content
Engine coolingPart report

2006 BMW Z4 Engine cooling Problems

Complaints
4about this part
Share
4%of 91 total for the year
Median mileage
52,000miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 4 complaints about the engine cooling of the 2006 BMW Z4, 4% of the 91 complaints for this model year. Where a mileage was given, the median is 52,000 miles. 2 recall campaigns on record are 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.

“The contact owns a 2006 BMW Z4. The contact stated that while at a complete stop at the traffic light, the vehicle overheated and stalled. The coolant temperature warning light illuminated. The contact waited for the vehicle to cool down and then restarted the vehicle and continued driving. The contact stated that the failure reoccurred several times. The vehicle was towed to the dealer several times. The dealer completed the engine lifters replacement and other unknown repairs however, the failure persisted. …”

NHTSA complaint #11464958, filed 2022-05, 52,000 miles

“The contact owns a 2006 BMW Z4. The contact received notification of NHTSA Campaign Number: 22V119000 (Engine and Engine Cooling) however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The contact stated that while driving at an undisclosed speed, the check engine warning light illuminated. The vehicle was taken to an independent mechanic who diagnosed that the PCV valve heater needed to be replaced. The vehicle was not repaired. The manufacturer was not made aware of the failure. …”

NHTSA complaint #11484865, filed 2022-09, 50,000 miles

“The contact owns a 2006 Bmw roadster Z4. The contact stated while driving 40 to 70 MPH the steering wheel pulled to the right which made it difficult for the contact to continue moving in a straight line. The vehicle was taken to the dealer who inspected the failure and confirmed that the vehicle was functioning normally. The vehicle was also taken to another mechanic who stated the vehicle needed an oil separator to avoid a yellow liquid from forming within the oil. The manufacturer was not contacted. The failure mileage was 54,000.”

NHTSA complaint #10405714, filed 2011-06, 54,000 miles

“The contact owns a 2006 BMW Z4. The contact received a notification for NHTSA Campaign Number: 22V119000 (Engine and Engine Cooling) however, the part to do the recall repair was unavailable. The dealer was made aware of the issue and confirmed that parts were not yet available. The manufacturer had been notified of the issue. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The contact had not experienced a failure. VIN tool confirms parts not available.”

NHTSA complaint #11480747, filed 2022-08

Related recalls

Related service bulletins

Engine cooling: other model years

YearComplaintsShare of year
2015240%
2014229%
2013114%
2012360%
2011715%
2010330%
200915%
2008211%
2007618%
200644%
2003113%

Other parts of the 2006 BMW Z4

Steering
55 complaintsAir bags
14 complaintsElectrical system
13 complaintsEngine
5 complaintsExterior lighting
4 complaintsSeats
3 complaintsOther or unknown
2 complaintsVehicle speed control
2 complaintsFuel system
1 complaintsBody and structure
1 complaintsTires
1 complaintsTransmission and drivetrain
1 complaints

← All problems reported for the 2006 BMW Z4

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 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