2021 BMW X3: What to check before buying

Owners have filed 79 complaints with NHTSA about this car, most about the electrical, body and structure, and acceleration and cruise control. The 10 checks below target those problems, in the order you would do them at the car.

2021

Owner complaints: 79
Recalls: 10; 1 urgent
Crashes reported: 3; 1 injury
Reliability: Good; 61/100 on Auto Reliability Index

One recall on this model year told owners to park outside until the repair was done.

Do not buy until you have dealer paperwork or a recall lookup showing it was completed for this VIN.

Which X3 is it?

EPA figures for each version of the 2021 BMW X3. Use them to confirm you are looking at the version that was advertised, and as a yardstick on the test drive.

Version	Drive	EPA rating
2.0L 4-cylGas	AWD, RWD	25–27 mpg
3.0L 6-cylGas	AWD	23 mpg
2.0L 4-cylPlug-in hybrid	AWD	340 mi range

The 2021 BMW X3 was sold in three versions. Confirm which one this is from the window sticker, the engine cover, or the VIN report before you compare prices.
On the plug-in hybrid, watch for the car moving off on electric power at low speed and for any hybrid system warning on the dash.
Reset the trip computer at the start of the drive. A X3 that averages well under the EPA 23 mpg combined on a mixed route may have an engine or tire problem.

Why these checks: what owners reported

NHTSA complaints for the 2021 BMW X3, grouped by the part owners named. Open a row to read what goes wrong.

Electrical19No crashes
Failure to start is the main pattern. Cars click and refuse to start, or fail to restart after auto start-stop shuts the engine off in traffic, sometimes leaving the car stuck in park. Many reports concern a starter-related electrical recall. Owners worry about fire, but dealers have no parts for the repair. Other reports describe melted daytime running light modules quoted at $4,200, a failed plug-in hybrid battery cell, module communication faults after a DME software update, and a satellite radio ad covering the speedometer.
Body and structure9No crashes
Most complaints here involve the recall for the interior rear cargo rails, whose attachment bolts can let the rails detach in a crash. Owners report that replacement parts are not available and say the wait has gone past a reasonable time. None of these owners report an actual failure. Separately, sunroof glass shatters while the car is moving, and a power tailgate closes on a person without its sensor stopping it.
Acceleration and cruise control72 crashes
Unintended acceleration while parking is the most serious pattern. Owners describe the car surging forward at low speed with the brake pedal pressed, and both crash reports involve hitting a tree or a wall while pulling into a space. In another report, cruise control set at 75 mph climbs past 90 mph on its own. Other complaints cover emergency braking with no vehicle nearby and an analog speedometer marked in 10 mph steps that makes exact speed hard to read.
Brakes3No crashes
Brakes lock up abruptly when backing up because parking distance control reacts to obstacles that are not there. Another report describes a brake pedal that stiffens while approaching a stop light, causing the driver to run the light, at about 50,500 miles. Owners also report loud screeching and a slipping feel under hard braking that gets worse in wet or snowy weather, and repeat dealer visits do not resolve it.
Exterior lights3No crashes
Screen dimming is the main complaint. The instrument cluster and center display set daytime brightness from a light sensor, and there is no manual daytime adjustment. Window tint, shade, or leaving a garage can make the backup camera, navigation, speed, and warnings hard to read. One report also describes headlights in the Auto setting switching on and off by themselves, which becomes a risk if it happens while driving in the dark.
Engine3No crashes
Persistent check engine lights are the most common complaint. Cars go back to dealers 2 or 3 times without a lasting fix, including the plug-in hybrid. Owners say not knowing the cause makes them hesitant to drive. A separate report on the B58 engine describes an oil level reading that will not rise above 20%. The owner links it to a failing oil pump and mentions low oil pressure warnings.
Steering3No crashes
The car wanders on the highway and needs steering corrections every 5 to 10 seconds to stay in its lane, even after a dealer alignment. Owners say repeated dealer visits do not fix it. One car needed both front tie rods replaced at 28,000 miles after loud popping over uneven pavement. Its bushings were worn, and the owner feared it could lead to a loss of steering control.

In owners' own words

Excerpts from complaints X3 owners filed with NHTSA, as written. Listen for the same symptoms on your test drive.

Electrical

The starter failed and car would not start, requiring replacement by the BMW dealership. Car is only 4 years old and had 29,699 miles at the time of replacement. Wondering whether noticed starter issues requiring replacement in 2021 BMW x3 m40i models in addition to other 2021 BMW x3 models that have been recalled and required starter/relay replacement.

Filed with NHTSA, January 2026

Electrical

While stopped in traffic the automatic start-stop system engaged. When traffic began moving again the vehicle failed to restart and automatically shifted to park. I was unable to shift into neutral to move off of the road. The "Engine cannot be started" control message appeared. After several attempts to manual start the vehicle it started.

Filed with NHTSA, December 2025

Body and structure

The sunroof glass spontaneously shattered while the vehicle was in motion. There were no weather events, debris, or damage to the sunroof prior to the incident. The panoramic moonroof behind the sunroof remained intact.

Filed with NHTSA, December 2025

How the 2021 compares with other X3 years

Complaints for this year next to the average for the other model years, area by area.

The 2021 ranks third for owner complaints among 8 X3 years, about 1.6 times the average of the others. Newer years have had less time to collect complaints, so compare like with like.

2021 Average of other years

Electrical1912
Body and structure96
Acceleration and cruise control70
Brakes32
Exterior lights31
Engine35

Where the 2021 fits in the X3's history

Redesigns and mid-cycle updates change what can go wrong.

The 2021 is the fourth model year of the X3's third generation (2018–2024).

BMW updated the X3 for 2022, so a 2021 does not have those changes.

What changed for 2022 (not on a 2021)

Updated headlights and taillights
New bumper designs
12.3-inch infotainment system available

Recalls to confirm (10)

Recall repairs are free at any BMW dealer, but the seller may never have had them done. Check each campaign number against the VIN.

25V636000ElectricalPark outsideSep 2025
BMW of North America, LLC (BMW) is recalling certain 2019-2021 BMW 330i, 2019-2022 BMW Z4, 2020-2022 BMW 530i, X3, X4, Toyota Supra, 2021-2022 BMW 430i, 430i Convertible, and 2022 BMW 230i vehicles. The engine starter relay may corrode, causing the relay to overheat and short circuit.
Risk: A short circuit in the starter relay may increase the risk of a fire.
Fix: Owners are advised to park their vehicles outside and away from structures until the remedy is complete. Dealers will replace the engine starter, free of charge. Owner notification letters were mailed February 6, 2026. Owners may contact BMW customer service at 1-800-525-7417. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on NHTSA.gov beginning November 14, 2025.
26V056000ElectricalJan 2026
BMW of North America, LLC (BMW) is recalling certain 2021-2023 Toyota Supra, 2022-2023 2 Series Coupe, 2021-2024 5 Series (xDrive), 2021-2022 Z4, 2022-2024 4 Series (Gran Coupe), 2021-2024 4 Series (Convertible and xDrive Convertible), 2021-2023 4 Series (Coupe), 2021-2024 3 Series, 2021-2023 X4, 2021-2024 X3 vehicles. Please see the recall report for a complete list of all models. The engine starter may overheat and catch fire due to wear on an internal component.
Risk: Fire increases the risk of injury.
Fix: Dealers will replace the engine starter, free of charge. Owner notification letters are expected to be mailed March 24, 2026. Owners may contact BMW customer service at 1-800-525-7417 or Toyota's customer service at 1-800-331-4331. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on NHTSA.gov beginning March 24, 2026.
24V764000Body and structureOct 2024
BMW of North America, LLC (BMW) is recalling certain 2018-2022 X3 sDrive30i, X3 xDrive30i, X3 M40i, and X3 M vehicles. The attachment for the rear cargo rail may become damaged in a rear crash and result in the cargo rail detaching.
Risk: Interior rear cargo rail detachment during a crash can increase the risk of injury.
Fix: Dealers will replace the rear cargo rail attachment bolts, free of charge. Owner notification letters were mailed December 12, 2024. Owners may contact BMW customer service at 1-800-525-7417. Vehicles in this recall were previously remedied for this issue under recall number 24V-534 and will need to have the new repair completed.
24V534000Body and structureJul 2024
BMW of North America, LLC (BMW) is recalling certain 2018-2023 X3 sDrive30i, X3 xDrive30i, X3 M40i, and X3 M vehicles. The attachment for the interior cargo rail may become damaged in a rear crash and result in the cargo rail detaching.
Risk: Interior cargo rail detachment during a rear crash can increase the risk of injury.
Fix: Dealers will replace the rear cargo rail attachment bolts, free of charge. Owner notification letters were mailed January 2, 2024. Owners may contact BMW customer service at 1-800-525-7417.
23V211000SeatsMar 2023
BMW of North America, LLC (BMW) is recalling certain 2019-2021 330i, 330i xDrive, M340i xDrive, 2020-2021 X3 sDrive30i, X3 xDrive30i, X3 M40i, X3M, 2021 X3 xDrive30e, X4 xDrive30i, and X4M vehicles. The seat frame may not have been welded properly to the seat rails.
Risk: An improperly welded seat frame may not properly restrain the occupant during a crash, increasing the risk of injury.
Fix: Dealers will replace the seat frame and back rest, free of charge. Owner notification letters were mailed May 22, 2023. Owners may contact BMW customer service at 1-800-525-7417.
21V199000Fuel systemMar 2021
BMW of North America, LLC (BMW) is recalling certain 2021 X3 sDrive30i, X3 xDrive30i, X3 M40i, X3M, and X4, and 2021 X4 xDrive30i vehicles. The inlet check valve weld may fail, allowing the filling pipe to separate from the fuel tank.
Risk: Fuel may leak through the failed weld, increasing the risk of a fire.
Fix: BMW will notify owners, and dealers will replace the fuel tank, free of charge. The recall is scheduled to begin May 17, 2021. Owners were also contacted by telephone. To date, all repairs have been done. No further owner notification letters will be sent. Owners may contact BMW customer service at 1-800-525-7417.
21V096000Backup cameraFeb 2021
BMW of North America, LLC (BMW) is recalling certain 2019-2021 X3 sDrive30i, X3 xDrive30i, X3 M40i, X3M, X4 xDrive30i, X4 M40i, M550i, X4M, X5 sDrive40i, X5 xDrive40i, X5 xDrive50i, X5M, X5 M50i, X7 xDrive40i, X7 xDrive50i, X7 M50i, Alpina XB7, 330i, 330i xDrive, M340i, M340i xDrive, and 8 Series Coupe, Convertible and Grand Coupe, 840i, 840i xDrive, M850i xDrive, M8, 2020-2021 530e, 530e xDrive, 330e, 330e xDrive, 745Le, 745Le xDrive, X5 xDrive45e, X3 xDrive30e, X6 sDrive40i, X6 xDrive40i, X6 xDrive50i, X6 M50i, X6M, 530i, 530i xDrive, 540i, 540i xDrive, M550i xDrive, M5, 740i, 740Li, 740Li xDrive, M760i Drive, M760Li xDrive, 750Li xDrive Alpina, Alpina B7 xDrive, and 2021 4 Series Coupe 430i, 430i xDrive, M440i xDrive vehicles. When shifting into Reverse, a small portion of the rearview image may be obscured, or the screen may not illuminate. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 111, "Rear Visibility.".
Risk: If the driver relies on only the rearview camera image, the missing or reduced rearview image view can increase the risk of a crash or injury.
Fix: BMW will notify owners, and dealers will inspect the rearview camera software and update it if necessary, free of charge. The recall began April 16, 2021. Owners may contact BMW customer service at 1-800-525-7417.
20V601000ElectricalSep 2020
BMW of North America, LLC (BMW) is recalling certain 2020-2021 530e, 530e xDrive, 530e iPerformance and X3 xDrive30e and MINI Cooper Countryman All4 SE, 2020 BMW i8, and 2021 330e, 330e xDrive, 745Le xDrive and X5 xDrive45e vehicles. Debris may have entered one or more of the hybrid battery cells during their production.
Risk: The debris could result in a short-circuit, increasing the risk of fire or injury.
Fix: BMW will inspect and, if necessary, replace the battery module free of charge. The remedy is currently being developed. Until the remedy is completed, drivers are instructed to not charge their vehicles. Drivers are instructed to not drive in manual mode, sport mode, and to not use the shift paddles. Owners were notified of the safety risk October 23, 2020. The recall began November 24, 2020. Owners may contact BMW customer service at 1-800-525-7417.
20V598000Backup cameraSep 2020
BMW of North America, LLC (BMW) is recalling certain 2020-2021 X3 sDrive 30i, X3 xDrive 30i, X3M 40i, X3 xDrive 30e, X4 xDrive 30i, X4M 40i, 530i, 540i, 540i xDrive, M550i xDrive, M5, 550e, 550e xDrive, and 550e iPerformance vehicles. A small portion of the rearview image may be slightly obscured. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 111, "Rear Visibility.".
Risk: If the driver relies on only the rearview camera image, the reduced rearview image view can increase the risk of a crash or injury.
Fix: BMW will notify owners, and dealers will inspect and, if necessary, program the rearview camera with updated software. The recall began November 18, 2020. Owners may contact BMW customer service at 1-800-525-7417.
20V490000ElectricalAug 2020
BMW of North America, LLC (BMW) is recalling certain 2021 330e and X5 xDrive45e, 2020-2021 X3 xDrive30e, and 2020 MINI Countryman SE ALL4 vehicles. Loose welding beads may form a conductive path between the hybrid battery cells which could lead to a short-circuit.
Risk: A short-circuited hybrid battery may increase the risk of a fire.
Fix: BMW will notify owners, and dealers will inspect and, if necessary, replace the battery modules, free of charge. BMW issued owners an interim notification on October 16, 2020. Although potentially affected BMW owners received interim owner notification letters, all potentially affected BMW owner vehicles have been remedied; therefore, BMW Final owner notification letters will not be necessary. Owners may contact BMW customer service at 1-800-525-7417.