2006 BMW Z4

No clear pattern

0% of complaints about the 2006 BMW Z4 arrived in its first year of service. That is an unusual figure for a 2006 vehicle, but with only 107 complaints on record the sample is too small to call it a pattern — the margin of error covers the range where ordinary vehicles sit. The figures below are reported without a verdict. The most-reported system is steering (55 complaints), typically at 8.8 yr or about 52,488 miles.

Complaints: 107
Median age at failure: 8.8 yr
Median mileage: 54,901 n=91
Crash / fire / tow: 4.7% of reports
Safety recalls: 2

Safety recalls — NHTSA campaigns

22V119000 2022-03-02

Engine and engine cooling:exhaust system:emission control:crankcase (pcv)

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.

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.

19V273000 2019-04-04

Engine and engine cooling:exhaust system:emission control:crankcase (pcv)

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.

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.

In owners’ own words

Steering 18,000 mi 3.7 yr in service

THIS CONCERNS MANY BMW Z4 EPS (ELECTRONIC POWER STEERING) WHEN THE CAR SET IN HOT WEATHER AND THEN I GO TO DRIVE IT, THE STEERING BECOMES VERY TIGHT AND DOES NOT ALWAYS RETURN TO CENTER. ALSO THERE IS A LAG IN STEERING TURNING OR NULL SPOT OF ALMOST NO RESPONSE FOR UP TO ONE INCH OF STEERING WHEEL TURN. THIS TIGHT SLUG EST RESPONSE TO IS TOTALLY OPPOSITE IN COOL WEATHER WHEN THERE IS NO PROBLEM IN STEERING RESPONSE. *TR

Steering 32,000 mi 4.4 yr in service

BMW 2006 Z-4 3.0 SI POWER STEERING UNIT FAILED TO OPERATE AT VEHICLE START UP. THE CAR WAS TAKEN TO THE LOCAL BMW DEALER (BMW LONG BEACH CA) WHERE THE FAILURE OF THE POWER STEERING UNIT WAS CONFIRMED BY THE MECHANIC. AFTER INSPECTION OF THE UNIT BY THE DEALER THE UNIT BEGAN TO OPERATE WITH NO FURTHER FAULTS FOUND, AN ADDITIONAL THREE DAYS OF TESTING AND TROUBLESHOOTING BY THE DEALER FAILED TO IDENTIFY OR REPEAT THE ORIGINAL FAULT WITH THE UNIT-- NO PARTS WERE REPLACED. *TR

Steering 4,800 mi 4.6 yr in service

I HAVE HAD A RECURRING SERIOUS PROBLEM WITH THE STEERING INPUT EFFORT, ESPECIALLY WHEN HOT OUTSIDE. THE STEERING SEEMS VERY HEAVY AND STICKS WHEN CLOSE TO THE ON-CENTER POSITION, AND IS VERY HEAVY AND DIFFICULT TO RETURN BACK TO THE ON-CENTER POSITION. IT IS A PROBLEM THAT HAS BEEN A CONCERN FOR MY WIFE AND I NOW FOR SEVERAL MONTHS. THE VEHICLE HAS BEEN IN AND OUT OF SERVICE VERY FREQUENTLY SINCE APRIL OF 2010. IT IS IN SERVICE FOR THE FORTH TIME NOW REGARDING THE PROBLEM WITH THE STEERING. THE VEHICLE THIS TIME HAS BEEN IN NOW FOR ALMOST A MONTH AND HAS NOT BEEN REPAIRED YET. *TR

Other Z4 model years

How to read this

This is what owners reported, not a reliability rating. People file with NHTSA about alarming failures, not routine ones, and complaint volume tracks how many cars were sold.
Failure ages come from the incident date on each complaint, populated on about 83% of records. Mileage is shown where reported — NHTSA’s 2021 system change cut mileage capture to roughly 15%, so it thins out sharply after MY2020.
Every rank compares this vehicle only against others of the same model year. A 2025 car has not had time to accumulate five-year failures, so comparing early-failure share across years is meaningless.
Fourteen make-months distorted by media storms and mass recalls — Toyota in February 2010 ran 11× normal volume across 33 models — are excluded.
Recalls are manufacturer actions and authoritative; complaints are not. A recall listed here may already have been performed on any individual car. Check a specific VIN at nhtsa.gov/recalls.

2006 BMW Z4

When each system is reported — middle 50% of complaints

Safety recalls — NHTSA campaigns

In owners’ own words

Other Z4 model years

How to read this