2020 BMW X3 Reliability Report

Three reports describe parked, unattended cars catching fire around the engine. All happened at low mileage and ended in total losses, and in one case a neighboring car burned too. Failed grille and lower radiator air shutters are a more common complaint. They bring on a check engine light, and owners link them to overheating. A failed heat management module or thermostat also causes overheating and drivetrain warnings. Other reports cite a variable oil pump with a plastic ring, plus hybrid models with recurring check engine lights and long shop stays after battery recalls.

Most of these complaints are about an open structure recall and missing parts, not actual failures. Owners say the recall was announced in July 2024 and months later dealers still had no remedy, and the online VIN tool confirmed parts were unavailable. None of these owners reported a failure. One separate report describes the sunroof glass blowing out at freeway speed with no impact or debris, which matches the sunroof complaints filed in other categories.

A passenger restraint malfunction warning keeps coming back. When it is active, the passenger side airbags may not deploy in a crash. Dealers have replaced the occupancy sensor, reseated connectors, or blamed the knee airbag wiring harness, and one owner reports a parts shortage. Warnings show up anywhere from the first few thousand miles to 70,000. Owners outside warranty report repair quotes as high as $3800. In one report, the seat sensor failed to detect a passenger.

The car brakes hard by itself with nothing in the road. One driver reports the opposite problem: while slowing for a red light at 35 mph, the brakes stopped working and the engine revved high on its own, and the car nearly hit the vehicle ahead. The collision prevention system did not step in, and the problem could not be reproduced afterward. Neither report mentions a crash.

The rearview camera shows a black screen or a distorted picture in reverse. Distortion shows up mostly at night or in bad weather, and no warning light comes on. Reported failures came at about 21,000 and 50,000 miles. Owners pointed to earlier camera recalls, but dealers and the manufacturer said these VINs were not included, and neither car was diagnosed or repaired.

Despite the category name, these complaints are about the screens inside the car. In daylight, the dashboard and infotainment display dim almost to black at random, which hides the speedometer and makes the radio and phone controls hard to use. Opening the driver window brightens them again. One owner says dealers have repeatedly said there is no fix. Another complaint says the white-on-black screens glare and are hard to read for drivers with some eye conditions.

Once the car warms up, especially in warm weather, the steering goes loose. The car drifts in its lane and will not hold a straight line even with steering assist on. A knock from underneath comes with returning the wheel to center at low speed. In another report, the dealer could not reproduce an abnormal noise while driving. Owners cited earlier steering recalls, but their VINs were not included.