Most common 2018 BMW X4 problems
Share of the 11 complaints; one complaint can involve more than one system. "~" is the median mileage when the problem started.
BMW X4 complaints by model year
Best X4 years: 2017. Years to avoid: 2020, 2015. Compare all years →
2018 BMW X4 recalls (1)
Electrical system › Wiring › Connectors/plugs/receptacles
BMW of North America, LLC. (BMW) is recalling certain 2012-2015 X1 sDrive28i, X1 xDrive28i, 2012-2016 Z4 sDrive28i, 528i, 528i xDrive, 328i, 328xi, 2016-2018 X5 xdrive 40e, 2014-2016 228i, 228xi, 428i, 428i xDrive, 328xi Gran Turismo, 2013-2017 X3 sDrive28i, X3 xDrive28i, 2015-2018 X4 xDrive28i, 2015-2016 428xi vehicles.
Remedy: Dealers will inspect and replace the water pump and plug connector as necessary, and install a protective shield, free of charge. Owner notification letters were mailed on March 28, 2025.
NHTSA defect investigations
Federal safety investigators have looked into a possible defect involving the 2018 BMW X4:
Desiccated Air Bag Inflator Rupture
From 2000 through 2017, Takata produced millions of air bag inflators using two types of phase-stabilized ammonium nitrate ("PSAN") propellant -- propellant 2004 and propellant 2004L. After prolonged exposure to high temperature cycles and humidity, inflators using propellant 2004 can degrade, causing the propellant to burn too quickly when ignited.
What 2018 BMW X4 owners say
Engine & cooling
The contact owns a 2018 BMW X4. The contact received notification of NHTSA Campaign Number: 24V608000 (ENGINE AND ENGINE COOLING, ELECTRICAL SYSTEM); however, the part to do the recall repair was unavailable. The local dealer was contacted, and it was confirmed that the part was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact stated that while operating the vehicle there was a burning odor coming from the engine compartment. The cause of the failure was not yet determined. The manufacturer and local dealer were notified of the failure. The failure mileage was 75,000. VIN tool confirms parts not available.
I got 2018 bmw x4 and 7year/80000km warranty from the bmw store in vancouver on jun 25,2019.I used to drive to seattle to shopping and eating. I and my husband drived this car from vancouver to edmonton on jun 1,2022. On jun 4,the engine sign and change oil sign all light up . on jun 6 we drived to the bmw edmonton to maintanance.on jun 7 they told me this car eccentric shaft faulty,the car mechanic show us the eccentric shaft already broken ,if i direct drived back to vancouver the engine maybe suddenly shut down or slower down on the highwat.and I must repair car in edmonton and pay total repair fee later back to vancouver to claim the warranty ,i called the bmw store vancouver rep he said ok.that time this car is 64500 km. …
Electrical system
The contact owns a 2018 BMW X4. The contact received notification of NHTSA Campaign Number: 24V608000 (ENGINE AND ENGINE COOLING, ELECTRICAL SYSTEM); however, the part to do the recall repair was unavailable. The local dealer was contacted, and it was confirmed that the part was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact stated that while operating the vehicle there was a burning odor coming from the engine compartment. The cause of the failure was not yet determined. The manufacturer and local dealer were notified of the failure. The failure mileage was 75,000. VIN tool confirms parts not available.
The water pump was found to have extreme corrosion after several other components on the car were damaged from the coolant leak into the electrical system. The car was suddenly losing power while driving and the DME was smoking, potentially causing an engine fire. So far the water pump, Digital Motor Electronics (DME) and throttle body were replaced over a 15 day period in service. The day the car was picked up, the chassis stabilization light came on and the dealership was receiving codes saying multiple additional electrical systems are now triggering the codes. The car was back at the dealer for service and now they are saying even more systems have been damaged by the leak. There is currently a recall on the water pump for this model and year, although this exact VIN is not included in the recall. …
2018 BMW X4 engines & fuel economy
| Engine | Transmission | Drive | MPG city / hwy / combined |
|---|---|---|---|
| 2.0L 4-cyl turbo | 8-speed automatic | AWD | 20 / 28 / 23 |
| 3.0L 6-cyl turbo | 8-speed automatic | AWD | 18 / 25 / 21 |
EPA ratings. Class: Small SUV.
Frequently asked questions
Is the 2018 BMW X4 a good car?
Based on 11 owner complaints filed with NHTSA, the 2018 X4 rates average: 1.6× as many complaints as a typical year of the X4 at the same age. Complaint counts don't account for sales volume or individual maintenance, so have any used car inspected before buying.
What is the most common problem with the 2018 BMW X4?
The engine & cooling — 8 complaints, 73% of all complaints for this model year. Next are the electrical system (7) and transmission & drivetrain (1).
How many recalls does the 2018 BMW X4 have?
There is 1 recall for the 2018 BMW X4, the most recent from August 13, 2024 (connectors/plugs/receptacles). Recall repairs are free at any authorized dealer — check whether yours has been done with the VIN recall check.
What are the best and worst years of the BMW X4?
The best years by complaints, compared at the same age, are 2017. Years to avoid or approach with caution: 2020 and 2015. See the full BMW X4 years comparison.
At what mileage do 2018 BMW X4 problems happen?
The median mileage reported in complaints is about 100,000 miles; 0% of problems with a recorded mileage started before 50,000 miles.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.