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What 18 owners told NHTSA about the 2015 BMW X4 Xdrive28i

These are the actual owner complaints behind this car’s reliability verdict, filed with the federal government, unedited. They’re unverified reports, not confirmed defects: read them as leads for your pre-purchase inspection, not a diagnosis.

All (18)Crash / fire / injury (3)Electrical system (5)Brakes (4)Engine (4)Engine & cooling (3)Transmission & drivetrain (3)Airbags (2)Fuel system (2)Lights (1)Seats (1)Speed control (1)

4 of 18 complaints match · Brakes · clear filters

Feb 13, 2024Brakes

WHEN DRIVING THE BMW X4 THE VEHICLE WOULD BREAK ON ITS OWN, CAUSING A MAJOR SAFETY ISSUE WHEN DRIVING ON THE ROAD AND FREEWAY. THIS CAUSED ME TO GET OFF THE ROAD IMMEDIATELY WITH THE RISK OF BEING HIT FROM THE REAR. WHEN I TOOK THE VEHICLE TO THE DEALER FOR REPAIR THEY SAID IT WAS THE CALIPERS AND BRAKE PADS THAT NEEDED REPLACED. WHEN THIS REPAIR TOOK PLACE, I TOOK THE VEHICLE HOME AND THE NEXT MORNING THE SAME THING HAPPENED WITHIN 1 MILE OF DIVING THE VEHICLE. THE CAR STARTED BRAKING ON ITS OWN. I IMMEDIATELY TOOK THE VEHICLE TO THE DEALER, THEY KEPT THE CAR AND WERE ABLE TO RECREATE THE ISSUE. THE ISSUE WAS THE HYDRAULIC SYSTEM FOR THE BRAKES ABS SYSTEM NEEDED TO BE REPLACED. THIS REPAIR TOOK PLACE AFTER THE VEHICLE WAS AT THE DEALER FOR 6 WEEKS. (THERE WERE NO PARTS AVAILABLE IN THE U.S. OR GERMANY AND IT TOOK 6 WEEKS TO GET THE PART.) TODAY I RECEIVED MY VEHICLE BACK AND IT DROVE WITH NO BRAKING ISSUES. THERE WERE NO WARNING LAMPS, MESSAGES OR OTHER SYMPTOMS OF THE PROBLEM PRIOR TO THE FAILURE IN DECEMBER 2023.

NHTSA ODI 11571770

Oct 21, 2018Transmission & drivetrainBrakes

BRAKES WERE UNRESPONSIVE WHEN TRYING TO SLOW FROM 35 MPH FOR STOP SIGN. COULD ONLY DEPRESS BRAKE PEDAL ABOUT A HALF-INCH, CAR ESSENTIALLY COASTED TO A STOP IN THE MIDDLE OF AN INTERSECTION CAUSING A NEAR MISS. CAR STARTED TO SHUDDER VIOLENTLY BEFORE COMING TO A STOP. THIS WAS THE FIRST OF 2 SERIOUS BRAKE FAILURES FOR THIS CAR.

NHTSA ODI 11141669

Oct 20, 2018Transmission & drivetrainBrakes

AFTER EXITING HIGHWAY ONTO OFFRAMP, I APPLIED BRAKES WHICH DID NOT SLOW CAR SIGNIFICANTLY, REAPPLIED BRAKE HARD AND AGAIN CAR CAR WOULD NOT SLOW ADEQUATELY. BRAKING POWER SEEM TO BE APPROX 10% OF NORMAL. CAR BEGAN TO SHAKE AND ENGINE REVVED AS CAR FINALLY STOPPED IN MIDDLE OF INTERSECTION, NEAR MISS VS ONCOMING TRAFFIC.

NHTSA ODI 11141623

Jun 8, 2015Electrical systemAirbagsBrakesCrash

THIS IS WAS ON HIGHWAY, NO TRUFFICK. ONE ACCIDENT HAPPENED BEFORE ME, WAS NO FLASH LIGHTS OR STOP LIGHTS, WHEN I FIND OUT WHAT THIS VEHICLE NOT MOVING, PRESSED FOOL BRAKE. IN 150 FEET OF FOOL BRAKE CAR DIDN'T STOP. I HIT THE CAR IN FRONT OF ME, THE ABS DIDN'T WORK DURING THE BRAKING, THE AIR BAGS DIDN'T PUMP OUT. THANKS GOD, NO BODY DIDN'T GET ANY SERIOUS INJURIES. THAT'S WAS SO SCARED.

NHTSA ODI 10724140

Working with the data? Download all 18 complaints as CSV · fetched from NHTSA July 28, 2026

How to use these: a complaint is one owner’s report, filed voluntarily and published unverified. Patterns matter more than any single story. If several owners describe the same failure at similar mileage, put that system at the top of your pre-purchase inspection list. Back to the full 2015 BMW X4 Xdrive28i verdict →