Z4 (E85)
Engine Reliability Comparison
Ford
4.6L 8-cyl / 224 hpView details
Complaint Breakdown
Known Issues
1AZ-FE
2.0L 4-cylView details
Complaint Breakdown
Known Issues
B6324S
3.2L 6-cyl / 235 hpView details
Complaint Breakdown
Known Issues
M54B25
2.5L 6-cyl / 184 hpView details
Complaint Breakdown
Known Issues
M54B30
3.0L 6-cyl / 225 hpView details
Complaint Breakdown
Known Issues
Vehicle-Level Issues
These issues affect the BMW Z4 regardless of engine variant.
Recalls (7)
BMW of North America, LLC (BMW) is recalling certain 2008-2013 1 Series Coupe (128i); 2007-2013 3 Series Coupe (328i, 328xi, 328i xDrive); 2007-2010 X3 SAV (X3 3.0si, X3 xDrive30i); 2008-2013 1 Series Convertible (128i); 2006-2011 3 Series Sedan (325i, 325xi, 328i, 328xi, 328i xDrive, 330i, 330xi); 2006-2012 3 Series Wagon (328i, 328i xDrive); 2007-2013 3 Series Convertible (328i); 2006-2010 5 Series Sedan (525i, 525xi, 528i, 528xi, 530i, 530xi); 2006-2007 5 Series Wagon (530xi); 2007-2010 X5 SAV (X5 3.0si, X5 xDrive30i); 2006-2008 Z4 Coupe (Z4 3.0si); and 2006-2011 Z4 Roadster (Z4 3.0i, Z4 3.0si, Z4 sDrive30i) vehicles. The heater for the positive crankcase ventilation (PCV) valve may short circuit.
BMW of North America, LLC (BMW) is recalling certain 2006 525i, 525xi, 530i, 530xi, 530xi Sports Wagon, 325i, 325xi, 325xi Sports Wagon, 330i, 330xi, Z4 3.0i and Z4 3.0si vehicles. The heater for the positive crankcase ventilation (PCV) valve may short circuit.
BMW of North America, LLC (BMW) is recalling certain 2008-2011 128i and 2007-2011 328i, 328xi, 328i xDrive, 525i, 525xi, 528i, 528xi, 530i, 530xi, X3 3.0si, X3 xDrive30i, X5 xDrive30i, Z4 3.0i, Z4 3.0si and Z4 sDrive30i vehicles. The heater for the positive crankcase ventilation (PCV) valve may short circuit.
ON CERTAIN PASSENGER VEHICLES, INCOMPATIBLE ELECTRONIC AIR BAG SYSTEM PROCESSORS MAY HAVE BEEN INSTALLED.
ON CERTAIN PASSENGER VEHICLES, UNDER CERTAIN ENVIRONMENTAL CONDITIONS, A VAPOR LOCK IN THE FUEL PUMP COULD OCCUR CAUSING THE ENGINE TO STALL. IF THIS WERE TO HAPPEN, THE ENGINE WOULD NOT BE ABLE TO BE RESTARTED FOR APPROXIMATELY 15 TO 20 MINUTES.
ON CERTAIN VEHICLES EQUIPPED WITH 18" TIRES, IT IS POSSIBLE THAT THE TIRE HAS BEEN DAMAGED DURING THE MOUNTING PROCESS TO THE RIM.
ON CERTAIN PASSENGER VEHICLES, THE CONNECTION OF THE SAFETY BELT BUCKLE TO THE STEEL ROPE OF THE TENSIONER DOES NOT MEET BMW SPECIFICATIONS. IN SEVERE FRONTAL CRASHES, THIS CONNECTION CAN DETACH.
All Generations
Alternatives in Sports Car
Frequently Asked Questions
What are the most common 2003-2008 BMW Z4 problems?
The 2003-2008 BMW Z4 has accumulated 1,157 NHTSA complaints. The most frequently reported problem areas are Steering, Safety Systems, Electrical System. As with any used vehicle, a pre-purchase inspection and vehicle history report are recommended.
Which BMW Z4 engine is most reliable?
The 2003-2008 BMW Z4 was offered with 5 engine options. Based on NHTSA complaint data, the 2.5L 6-cyl has the lowest complaint density and is considered the most reliable choice for buyers.
Is the 2003-2008 BMW Z4 a good used car?
The 2003-2008 BMW Z4 can be a solid used car purchase depending on trim, mileage, and maintenance history. With 1,157 total NHTSA complaints on record, prospective buyers should review the known problem areas and check for open recalls before buying.
How many NHTSA complaints does the 2003-2008 BMW Z4 have?
The 2003-2008 BMW Z4 has 1,157 complaints filed with NHTSA as of our latest data pull. Complaint counts reflect owner-reported issues and do not necessarily indicate defects or safety risks on their own.
What recalls affect the 2003-2008 BMW Z4?
There are 7 NHTSA recalls affecting some 2003-2008 BMW Z4 vehicles. Recall status varies by VIN — check the NHTSA recall database at recalls.nhtsa.dot.gov with your specific VIN to confirm which campaigns apply.
What should I check before buying a used BMW Z4?
Before buying a used BMW Z4, verify all open recalls are completed via the NHTSA VIN lookup tool. Pay particular attention to Steering, Safety Systems, Electrical System, which are the most commonly reported problem areas. Request maintenance records, have an independent mechanic inspect the vehicle, and run a vehicle history report to check for prior accidents or title issues.
Data from NHTSA federal complaints database. 1,157 complaints analyzed. Data confidence: high. Last updated: 2026-04-06.