Showing the 2018 X3 M40i: EPA's X3 M40i (3.0 L, AWD). Recalls and complaints cover the whole model year. Every version
Owner complaints, recalls, fuel economy and safety ratings from public NHTSA and EPA data, updated Oct 17, 2026.
Fuel economy
23 mpgcombined; city 20, highway 27; the M40i
Five years of fuel
$17,500U.S. average; Ohio $16,490 at local prices; the M40i; fuel only, not other costs of owning it; 15,000 miles a year, at EIA fuel prices for the week of Oct 12, 2026
NHTSA overall safety rating
Not ratedNHTSA has no overall rating for this year
NHTSA's VIN data lists these trims for the 2018 X3. A trim's engine and numbers are shown as its own only where EPA names versions after the trim and no other version could be it; "seen with" means a source shows that engine on the trim, not that it was the only one. Recalls and complaints cover the whole model year: whether a recall applies to a car depends on its VIN, on NHTSA's recall lookup.
Owners have filed 76 complaints with NHTSA about the 2018 X3. These are unverified owner reports, counted by the part of the car they name; one complaint can name several parts. Counts aren't adjusted for how many were sold, so they don't show how reliable a car is.
Complaints by part of the car
Part
Complaints
Crashes
Fires
Injuries
Electrical system
22
0
0
0
Engine
16
0
0
0
Unknown or other
12
2
2
2
Structure
9
0
0
0
Steering
7
2
0
0
Exterior lighting
6
0
0
0
Air bags
5
0
0
0
Suspension
5
0
0
0
Engine and engine cooling
4
0
0
0
Service brakes
4
3
0
2
Back over prevention
3
0
0
0
Power train
2
0
0
0
8 more parts
Seat belts
2
0
0
0
Seats
2
0
0
0
Visibility/wiper
2
0
0
0
Forward collision avoidance
1
0
0
0
Lane departure
1
0
0
0
Latches/locks/linkages
1
0
0
0
Service brakes, hydraulic
1
0
0
0
Vehicle speed control
1
0
0
0
Complaints by model year
Newer years have had less time to collect complaints, and counts aren't adjusted for sales, so a shorter bar doesn't mean a more reliable year.
NHTSA lists 11 recall campaigns for the 2018 X3 over its history. Campaigns are matched by model and year, so each one may apply to a given car, and its repair may already be done: check a VIN on NHTSA's recall lookup for the open recalls on that exact car.
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.
Remedy: 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.
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.
Remedy: 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.
BMW of North America, LLC (BMW) is recalling certain 2018-2019 X3 sDrive30i, X3 xDrive30i, X3 M40i and 2019 X4 xDrive30i, and X4 M40i vehicles. The front passenger seat occupant classification system may have been improperly assembled, which could result in the misclassification of the seat as unoccupied, and deactivate the front air bag.
Risk: A deactivated front air bag will not deploy in the event of a crash, increasing the risk of injury.
Remedy: Dealers will replace the seat foam, which includes the occupant classification system, free of charge. Owner notification letters were mailed on September 3, 2021. Owners may contact BMW customer service at 1-800-525-7417.
BMW of North America, LLC (BMW) is recalling certain 2019-2020 X4 xDrive30i and X4 M40i, and 2018-2020 X3 sDrive30i, X3 xDrive30i, X3 M40i, and X3M vehicles. The instrument panel casing may not have been tightened properly to the passenger air bag.
Risk: In the event of a crash necessitating air bag deployment, the air bag could damage the instrument panel and cause small pieces of the panel to strike the driver or other occupants, increasing the risk of injury.
Remedy: BMW will notify owners, and dealers will replace the instrument panel casing, free of charge. The recall began May 15, 2020. Owners may contact BMW customer service at 1-800-525-7417.
BMW of North America, LLC (BMW) is recalling certain 2018 540d, 2018-2020 530i, 530i xDrive, 540i, 540i xDrive, M550i xDrive, M5, 530e, 530e xDrive, X3 sDrive, X3 xDrive, X3 M40i, X3 M, and 2019-2020 X4 xDrive, X4 M40i, X4 M, X7 xDrive, X7 M50i, 740Li, 740Li xDrive, 750Li, 750Li xDrive, 8 Series Convertible and Coupe 840i, 840i xDrive, M850i xDrive, X5 sDrive, X5 xDrive, X5 M50i, X6 xDrive, X6 M50i, 330i, 330i xDrive, M340i, M340i xDrive, Z4 sDrive, Z4 M40i, 740Le xDrive and 745Le xDrive, 2018-2019 640i xDrive Gran Turismo and Rolls-Royce Phantom, 2019 M850i xDrive Gran Coupe and Rolls-Royce Cullinan and 2020 Toyota Supra vehicles. The back-up camera and display settings can be adjusted such that the rear view image is no longer visible and the system will retain that setting the next time the vehicle is placed in reverse. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 111, "Rearview Mirrors."
Risk: The lack of an image in the back-up camera display increases the risk of a crash.
Remedy: BMW will notify owners, and dealers will update the back-up camera software, free of charge. The recall began November 8, 2019. Owners may contact BMW customer service at 1-800-525-7417 or Rolls-Royce at 1-877-877-3735. Toyota owners may contact Toyota customer service at 1-888-270-9371.
BMW of North America, LLC (BMW) is recalling certain 2018-2019 X3 sDrive30i, xDrive30i and M40i and 2019 X4 xDrive30i and M40i vehicles. The front seatback frames may have been improperly welded, allowing the seatback to unexpectedly fold forward or rearward.
Risk: In the event of a crash, there is an increased risk of injury if the seatback folds forward or rearward.
Remedy: BMW will notify owners, and dealers will replace the front seats, free of charge. The recall began September 27, 2019. Owners may contact BMW customer service 1-800-525-7417.
BMW of North America, LLC (BMW) is recalling certain 2018-2019 BMW X3 sDrive30i, X3 xDrive30i, X3 M40i and certain 2019 X4 xDrive30i and X4 M40i vehicles. The rear brake caliper pistons on these vehicles may have an insufficient coating, potentially reducing rear brake performance.
Risk: A reduction of braking performance can increase the risk of a crash.
Remedy: BMW will notify owners, and dealers will bleed the rear brake circuit, free of charge. The recall began August 31, 2018. Owners may contact BMW customer service at 1-800-525-7417.
BMW of North America, LLC (BMW) is recalling certain 2018 BMW X3 xDrive30i and X3 M40i vehicles. The rear turn signals on the outboard side panel will illuminate red, while the inboard turn signals simultaneously illuminate amber. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 108, "Lamps, Reflective Devices, and Associated Equipment."
Risk: Turn signals that flash multiple colors may confuse other drivers, increasing the risk of a crash.
Remedy: BMW will notify owners, and dealers will inspect the rear turn signal lights, and replace if necessary, free of charge. The recall began August 20, 2018. Owners may contact BMW customer service at 1-800-525-7417.
BMW of North America, LLC (BMW) is recalling certain 2018-2019 BMW X3 xDrive30i, X3 sDrive30i, and X3 M40i vehicles equipped with the "Active Lane Keeping Assistant" option. The steering wheel may be incompatible with the lane keeping assistant function and may not detect if the driver's hands are off the wheel.
Risk: If the sensors do not properly detect the driver's hands are off the wheel, the driver may not be alerted by one or more warning signals, increasing the risk of a crash.
Remedy: BMW will notify owners, and dealers will inspect the steering wheel, replacing it if necessary, free of charge. The recall began on July 19, 2018. Owners may contact BMW customer service at 1-800-525-7417.
BMW of North America, LLC (BMW) is recalling certain 2018 BMW X3 xDrive30i and X3 M40i vehicles. The rear spoiler may not have been properly attached during assembly, or may be missing screws, possibly causing the spoiler to detach while driving.
Risk: If the spoiler detaches while driving, it can become a road hazard, increasing the risk of a crash.
Remedy: BMW will notify owners, and dealers will inspect the spoiler, correcting its attachment as necessary, free of charge. The recall is expected to begin May 1, 2018. Owners may contact BMW customer service at 1-800-525-7417.
BMW of North America, LLC (BMW) is recalling certain 2018 230i, 230i xDrive, M240i, M240i xDrive, M2, and X3 xDrive 30i SAV vehicles. These vehicles may have an error in the software for the instrument panel, causing the display to not properly illuminate. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 101, "Control and Displays."
Risk: If the display does not illuminate during start up or does not illuminate various control and warning symbols while driving, it can increase the risk of a crash.
Remedy: BMW will notify owners, and dealers will update the instrument cluster display software, free of charge. The recall is expected to begin January 8, 2018. Owners may contact BMW customer service at 1-800-525-7417.
Carmakers sent NHTSA 389 service bulletins and notices that cover the 2018 X3, the latest on Aug 3, 2026. They tell dealers how to fix known issues.
The parts they mention most: electrical system (140), equipment (125), visibility (35), structure (32), engine and engine cooling (30).
NHTSA hasn't opened a defect investigation that covers this model year.
Maintenance
Oil
The owner's manual gives the oil and how often to change it. We show oil facts only once we've checked them against the manual, and we haven't yet for the 2018 X3.
EPA class: small sport utility vehicle. EPA greenhouse gas score: 5 out of 10. Each version EPA tested:
Swipe the table sideways for more columns.
Version
Engine
Transmission
Fuel
City / hwy / comb
X3 M40i All-Wheel Drive
3.0 L, 6 cyl, turbo
Automatic (S8)
Premium Gasoline
20 / 27 / 23
X3 xDrive30i All-Wheel Drive
2.0 L, 4 cyl, turbo
Automatic (S8)
Premium Gasoline
22 / 29 / 25
Sources and dates
U.S. EPA fuel economy data, file of Sep 29, 2026
NHTSA owner complaints, file of Oct 17, 2026
NHTSA recalls, file of Oct 17, 2026
NHTSA manufacturer communications, file of Oct 17, 2026
NHTSA defect investigations, file of Oct 17, 2026
NHTSA 5-Star Safety Ratings, file of Aug 7, 2026
U.S. Energy Information Administration, file of Oct 12, 2026
Fuel cost: EPA mpg with fuel prices for the week of Oct 12, 2026 and electricity prices for Jul 2026. Source: U.S. Energy Information Administration (Oct 2026). Complaints are unverified reports owners filed with NHTSA. About the data