IllustrationWHILE DRIVING THE CAR, THE REAR END FAIL AND BEGAN TO DRAG. AFTER GETTING THE CAR TOWED TO THE SHOP, IT WAS NOTED THE REAR END SUBFRAME WELDS CAME LOSE. AFTER CONTACTING THE INSURANCE COMPANY THEY TOTALED THE CAR OUT. I BOUGHT THE CAR BACK AND MADE REPAIRS TO THE CAR THAT COST ME $4000.00. *TR
1999 BMW M Roadster
Owner reports · Recalls · Investigations
Limited comparison data
There is not enough comparable history to draw a useful model-year comparison.
About this comparison →How this year compares
Owner complaints by model year
Compare all M Roadster years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
All reported categories
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
Limited mileage data: 17 of 18 reports include usable mileage. There isn’t enough coverage to show a useful chart.
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
- Structure. Review the 9 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Power Train. Review the 5 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Suspension. Review the 5 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
0 crash reports0 fire reports0 injury reports
Structure complaints
9 reportsTL* THE CONTACT OWNS A 1999 BMW M ROADSTER. THE CONTACT HEARD A NOISE COMING FROM THE REAR OF THE VEHICLE. THE VEHICLE WAS TOWED TO THE DEALER WHERE IT WAS INSPECTED AND THE CONTACT WAS INFORMED THAT THE SUBFRAME HAD FRACTURED. THE MANUFACTURER WAS AWARE OF THE FAILURE. NO REPAIRS WERE PERFORMED. THE CURRENT AND FAILURE MIL…
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TL* THE CONTACT OWNS A 1999 BMW M ROADSTER. THE CONTACT HEARD A NOISE COMING FROM THE REAR OF THE VEHICLE. THE VEHICLE WAS TOWED TO THE DEALER WHERE IT WAS INSPECTED AND THE CONTACT WAS INFORMED THAT THE SUBFRAME HAD FRACTURED. THE MANUFACTURER WAS AWARE OF THE FAILURE. NO REPAIRS WERE PERFORMED. THE CURRENT AND FAILURE MILEAGE WAS 135,000. UPDATED 09/19/11 *BF THE MECHANIC INFORMED THE CONSUMER THE PROBLEM WAS DUE TO FATIGUE. THE SHEET METAL WAS TOO THIN AND THE BOX BEAM WAS TOO SMALL. UPDATED 11/04/11
THE DIFFERENTIAL MOUNT FOR THE CAR HAS TORN LOOSE FROM THE TRUNK FLOOR IT IS WELDED TO. THERE WAS NO ACCIDENT BECAUSE I FOUND THIS DEFECT BEFORE ONE OCCURRED. HAD I NOT FOUND THIS DEFECT, THE ENTIRE REAR AXLE COULD HAVE COME LOOSE FROM THE VEHICLE WHILE DRIVING IT. *TR
NOISE DEVELOPING UNDER REAR UNDERCARRIAGE. *TR
DIFFERENTIAL SUBFRAME CAUSES WELD FAILURES APPEARING IN TRUNK AND OTHER BODY LOCATIONS. I BELIEVE THAT THIS IS CAUSED BY A DEFECT THAT GENERATES A SIGNIFICANT SAFETY HAZARD. THIS DEFECT IS BEING REPORTED BY AN INCREASING NUMBER OF Z3 OWNERS OVER TIME. *TR
REAR SUBFRAME SEPARATION ON 1999 M ROADSTER (Z3). *TR
I AM HAVING A SUBFRAME FAILURE ISSUE WITH MY 1999 BMW M ROADSTER. IT HAS 70,000 K OR ABOUT 43,000 MILES ON IT. NEVER BEEN WINTER DRIVEN. I HEARD A KNOCKING AND SQUEAKING SOUND FROM THE REAR, IT LOOKS LIKE THE SUBFRAME IS CRACKING ALSO ON ME. *JB
1) FAILURE OCCURRED SUDDENLY DURING ACCELERATION 2) THE DIFFERENTIAL MOUNTS AND SUBFRAME ON MY 1999 BMW M ROADSTER (MZ3) GAVE WAY, ALLOWING THE DIFFERENTIAL TO DROP TO THE ROAD MOMENTARILY AND CRACK THE HEAT SINK. THE DIFFERENTIAL THEN RESTED ON THE EXHAUST PIPES. THIS CAUSED THE CV JOINT BOLTS TO IMPACT THE EXHAUST PIPE UPON…
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1) FAILURE OCCURRED SUDDENLY DURING ACCELERATION 2) THE DIFFERENTIAL MOUNTS AND SUBFRAME ON MY 1999 BMW M ROADSTER (MZ3) GAVE WAY, ALLOWING THE DIFFERENTIAL TO DROP TO THE ROAD MOMENTARILY AND CRACK THE HEAT SINK. THE DIFFERENTIAL THEN RESTED ON THE EXHAUST PIPES. THIS CAUSED THE CV JOINT BOLTS TO IMPACT THE EXHAUST PIPE UPON ROTATION, CREATING NOISE AND VIBRATION. 3) A TEMPORARY WELD WAS MADE ON DEC 19, 2005, UNTIL PERMANENT BODY WORK CAN BE COMPLETED. *JB
AFTER OTHERS TOLD ME OF THE DEFECTS IN THEIR Z3 CARS, I DECIDED TO CHECK MY OWN CAR. AFTER REMOVING THE CARPET IN THE TRUNK AND IT REVEALED MULTIPLE BROKEN SPOTWELDS OF THE CROSSMEMBER THAT SUPPORTS THE DIFFERENTIAL AND CONNECTS TO THE TRUNK FLOOR PAN. ALSO THE LEFT SIDE OF THE FLOOR PAN IS PULLING LOOSE FROM THE BODY AND EXTEND…
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AFTER OTHERS TOLD ME OF THE DEFECTS IN THEIR Z3 CARS, I DECIDED TO CHECK MY OWN CAR. AFTER REMOVING THE CARPET IN THE TRUNK AND IT REVEALED MULTIPLE BROKEN SPOTWELDS OF THE CROSSMEMBER THAT SUPPORTS THE DIFFERENTIAL AND CONNECTS TO THE TRUNK FLOOR PAN. ALSO THE LEFT SIDE OF THE FLOOR PAN IS PULLING LOOSE FROM THE BODY AND EXTENDS ALONG THE ENTIRE LEFT SIDE OF THE FLOOR PAN. THE LEFT SIDE OF THE TRUNK HAS RECESSED BY ABOUT A HALF INCH. THE DIFFERENTIAL MOUNT THAT CONNECTS THE CROSSMEMBER TO THE DIFFERETIAL HAS A CRACK IN IT.
Official recalls
0No recalls in this snapshot.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
0No exact-year investigations in this snapshot.