Emission control: crankcase (pcv)
Risk. An electrical short can cause the PCV valve heater to overheat, increasing the risk of a fire while driving or, soon after driving when parked.
NHTSA has logged 33 owner complaints about the 2007 BMW Z4, most often about the steering. It is covered by 2 safety recalls, and for recall 22V-119 the manufacturer reports only 27% of affected cars repaired.

Source: NHTSA complaints, recalls, investigations and manufacturer recall reports, through December 15, 2022. Updated daily. Photo: Mr.choppers, CC BY-SA 3.0.
33 complaints grouped by the system owners reported.
| System | Complaints | Crash, fire or injury |
|---|---|---|
| Steering | 11 | 2 |
| Air bags | 6 | 1 |
| Engine and engine cooling | 6 | 0 |
| Electrical system | 4 | 1 |
| Engine | 4 | 0 |
| Suspension | 2 | 0 |
| Exterior lighting | 2 | 0 |
| Wheels | 1 | 1 |
| Electronic stability control (ESC) | 1 | 0 |
| 5 other systems | 5 | 1 |
Source: NHTSA Office of Defects Investigation. Complaints are submitted by the public and are not verified by NHTSA.
Each ring shows the share of affected cars repaired, from the manufacturer’s latest quarterly report to NHTSA. Recall repairs are free at authorized dealers.
Risk. An electrical short can cause the PCV valve heater to overheat, increasing the risk of a fire while driving or, soon after driving when parked.
Risk. An electrical short can cause the parts within the PCV valve to melt, increasing the risk of a fire, even when the vehicle is not in use.
Recalls apply to specific cars. To see whether a recall is still open on yours, enter the 17-character VIN at nhtsa.gov/recalls or with BMW.
Bars show complaints per model year. Colors show the CarFlaw verdict: complaints weighted for crashes, fires and injuries, adjusted for years on the road and compared with the Z4 median. How we score
2007 BMW Z4 2-DR w/SAB in NHTSA's New Car Assessment Program. Photos are from NHTSA's crash tests.
Recent steering complaints filed with NHTSA, shortened. Personal details are removed.
CASE NUMBER [XXX] FROM FARS 2012 DATABASE. CAR RAN OFF RIGHT SIDE OF ROADWAY WHILE NEGOTIATING CURVE IN ROAD AND HIT A TREE. SOLE-OCCUPANT DRIVER PERISHED IN SUBSEQUENT FIRE. SIX MONTHS BEFORE ACCIDENT, VICTIM REPORTED THAT CAR "OCCASIONALLY POPS AND/OR SQUEAKS WHEN CORNERING" IN REQUEST FOR…
POWER STEERING IS RIGID AT ROAD SPEEDS. DEALER SAYS IT NEEDS A $4400 STEERING ESP UNIT. CAR DAD 3700 MILES NOT IT. THIS IS DEFINITELY A SAFETY ISSUE SINCE CAR IS DIFFICULT TO CONTROL.
STEERING IS DANGEROUSLY DEFECTIVE WITH CAR MOVING LEFT AND RIGHT RAPIDLY CREATING SCARY AND UNCOMFORTABLY DRIVING EXPERIENCING. FEELS LIKE INTERMITTENT GRABBING RESISTANCE ON THE STEERING WHEEL WHEN TURNING AT NORMAL HIGHWAY SPEEDS, ALMOST LIKE THE BRAKES ARE BEING APPLIED INTERMITTENTLY IN THE…
Decode your VIN to see the recalls for your exact car, then confirm open recalls with NHTSA.