Most common 1999 BMW Z3 problems
Share of the 39 complaints; one complaint can involve more than one system. "~" is the median mileage when the problem started.
BMW Z3 complaints by model year
Best Z3 years: 2002, 2001. Years to avoid: 1997. Compare all years →
1999 BMW Z3 recalls (2)
Power train › Driveline › Differential unit
Vehicle description: passenger vehicles. The rear axle differential May contain ring gear bolts that were incorrectly torqued during assembly. The bolt or bolts could loosen leading to noise from the differential.
Remedy: Dealers will inspect the vehicle's differential and if involved, will replace it.
Electrical system › 12V/24V/48V battery › Cables
Vehicle description: passenger vehicles. The nut that secures the main positive cable to the positive battery terminal clamp was not tightened properly, allowing the cable to loosen over time. If this occurred, the cable could ultimately loosen to the point where electrical continuity could be interrupted.
Remedy: Dealers will tighten the nut to the proper specifications.
What 1999 BMW Z3 owners say
Body & structure
Very well known failure, just search for "BMW Z3 subframe failure". It is a design flaw by BMW that affects a lot of Z3's through all model years. Mine started to pop one weld at 88K miles. It can cause the rear alignment to be off, in worst case the trunk floor is torn out and the differential falls to the ground. Clunking from the back while shifting in the first two gears is one indicator this damage is not far away. This is one forum thread that describes the issue well: https://www.bimmerforums.com/forum/showthread.php?1979601-subframe-trunk-floor-differential-mount-failure
Dt*: the contact stated while driving 70 MPH during clear conditions, the front driver side air bag deployed without warning or impact to the vehicle. There was no debris or potholes present. The contact suffered cuts, bruising and scaring to the left arm. The contact drove to the hospital. The service dealer and manufacturer were notified and photos were taken of the vehicle and injuries. Updated 11/16/2006 -the gas gauge and odometer were inoperative. The dealer replaced the instrument cluster. The driver's door grab handle was replaced. The rear shocks and mounts were replaced. There was a power steering leak. The dealer replaced the power steering hose res to pump. The dealer replaced the flex coupler on the drive shaft.
Air bags
Hello, NHTSA released a recall warning for BMWs made from 2000 to 2006, regarding Takata airbags. "The risk to vehicle occupants is dire," it said. My 1999 BMW Z3 was made one year before this, and is not included in the recall. I have been trying to determine whether my '99 BMW has Takata airbags as well, thus far with no success. As of today, BMW will only tell me that there are no outstanding recalls for my car - they have not been willing to tell me what type of airbags they originally installed in it. Do your records indicate what type of airbags I have?
Dt*: the contact stated while driving 70 MPH during clear conditions, the front driver side air bag deployed without warning or impact to the vehicle. There was no debris or potholes present. The contact suffered cuts, bruising and scaring to the left arm. The contact drove to the hospital. The service dealer and manufacturer were notified and photos were taken of the vehicle and injuries. Updated 11/16/2006 -the gas gauge and odometer were inoperative. The dealer replaced the instrument cluster. The driver's door grab handle was replaced. The rear shocks and mounts were replaced. There was a power steering leak. The dealer replaced the power steering hose res to pump. The dealer replaced the flex coupler on the drive shaft.
Transmission & drivetrain
The rear differential housing is separating from the subframe of the car, under or near the trunk area. This is a well documented issue with the Z3 series of vehicles. This could be a safety hazard while operating the vehicle if the read differential separates from the subframe, and could cause a hazard to other motorist. This appears to be due to a design flaw. The frame was designed for a 1.9l engine, and BMW did not redesign the subframe to allow for the larger engines it later sold in the Z3 series of cars. BMW also had this same issue on 3xx series of vehicles, and agreed to repair those cars due to a class action law suite settlement. BMW should be held accountable for the design issue, and acknowledge the safety hazard.
Very well known failure, just search for "BMW Z3 subframe failure". It is a design flaw by BMW that affects a lot of Z3's through all model years. Mine started to pop one weld at 88K miles. It can cause the rear alignment to be off, in worst case the trunk floor is torn out and the differential falls to the ground. Clunking from the back while shifting in the first two gears is one indicator this damage is not far away. This is one forum thread that describes the issue well: https://www.bimmerforums.com/forum/showthread.php?1979601-subframe-trunk-floor-differential-mount-failure
1999 BMW Z3 engines & fuel economy
| Engine | Transmission | Drive | MPG city / hwy / combined |
|---|---|---|---|
| 2.5L 6-cyl | 5-speed manual | RWD | 17 / 25 / 20 |
| 2.8L 6-cyl | 4-speed automatic | RWD | 17 / 24 / 19 |
| 2.8L 6-cyl | 5-speed manual | RWD | 17 / 24 / 19 |
| 2.5L 6-cyl | 4-speed automatic | RWD | 17 / 24 / 19 |
EPA ratings. Class: Sports car.
Frequently asked questions
Is the 1999 BMW Z3 a good car?
Based on 39 owner complaints filed with NHTSA, the 1999 Z3 rates average: about as many complaints as a typical year of the Z3 at the same age. Complaint counts don't account for sales volume or individual maintenance, so have any used car inspected before buying.
What is the most common problem with the 1999 BMW Z3?
The body & structure — 11 complaints, 28% of all complaints for this model year, most often about frame and members. Next are the air bags (10) and transmission & drivetrain (9).
How many recalls does the 1999 BMW Z3 have?
There are 2 recalls for the 1999 BMW Z3, the most recent from October 7, 1999 (differential unit). Recall repairs are free at any authorized dealer — check whether yours has been done with the VIN recall check.
What are the best and worst years of the BMW Z3?
The best years by complaints, compared at the same age, are 2002 and 2001. Years to avoid or approach with caution: 1997. See the full BMW Z3 years comparison.
At what mileage do 1999 BMW Z3 problems happen?
The median mileage reported in complaints is about 88,000 miles; 16% of problems with a recorded mileage started before 50,000 miles.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.