CoolingHigh
Coolant leaks from the expansion tank / hoses.
- Typically appears
- 70,000+ miles
- What to inspect
- Check for coolant loss and residue; test the cooling system.
2018 BMW X5 problems
A 2018 BMW X5 is now 8 years old, so an average example has covered around 108,000 miles. The final model year of the generation · generally the most sorted build, so mileage, servicing and condition matter more than build-year faults. Check the state safety inspection and service history alongside the documented faults below, which are sorted by whether a 2018 car has usually reached the mileage where they appear.
Compiled & reviewed by the VehicleFaults Research Team
Quick answer
The 2018 BMW X5 is 8 years old, so an average example has covered roughly 108,000 miles. At that mileage 7 of the documented faults are already due, so check those first.
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Build the inspection planFaults a 2018 example has usually reached
Documented onset mileage is at or below the ~108k miles an average 2018 car has covered.
EngineMedium
Oil-filter-housing gasket leak.
- Typically appears
- 70,000+ miles
- What to inspect
- Look for oil around the filter housing.
EngineHigh
N63 V8 oil consumption on 50i models.
- Typically appears
- 60,000+ miles
- What to inspect
- Check oil level and consumption history on V8 cars.
SuspensionMedium
Optional air suspension wear / leaks.
- Typically appears
- 80,000+ miles
- What to inspect
- Check ride height and listen for the compressor cycling.
Engine / ExhaustHigh
Internal coolant loss and potential fire risk due to EGR cooler cracking, triggering a drivetrain warning.
- Typically appears
- 40,000-80,000 miles
- What to inspect
- Remove the acoustic engine cover and inspect the EGR cooler for white, chalky residue. Check the iDrive 'Vehicle Status' for low coolant warnings.
DrivetrainHigh
Judder, hesitation, or binding sensation during low-speed manoeuvres or moderate acceleration due to worn transfer box clutches.
- Typically appears
- 60,000-100,000 miles
- What to inspect
- Perform a tight figure-of-eight manoeuvre on the forecourt at low speed on full lock. Feel for any skipping, binding, or juddering through the floorpan.
Suspension / SteeringMedium
Knocking noises over rough surfaces and a vague steering feel caused by split fluid-filled lower tension strut bushes.
- Typically appears
- 50,000-70,000 miles
- What to inspect
- Drive at 5-10 mph and apply the footbrake sharply. Listen for a distinct metallic clunk from the front axle and observe if the front wheels shift backwards.
Faults that appear at any mileage
Age, electronics and build-related issues that are not mileage-driven.
Body / ElectricsMedium
The upper section of the split tailgate groans, fails to lift fully, or drops unexpectedly due to failing spindle drives.
- Typically appears
- 5-7 years
- What to inspect
- Operate the power tailgate via the key fob and the boot lid button. Ensure it opens fully without grinding noises and that the soft-close latch pulls it shut securely.
Inspecting a 2018 BMW X5?
Turn this car's known weak points into a step-by-step viewing plan · what to inspect, what a bad result means and what to ask the seller.
Build my inspection planBMW X5 · frequently asked questions
Is the F15 X5 reliable?
Comfortable but costly to maintain; cooling and oil leaks are common.
Does the V8 X5 burn oil?
The N63 can consume oil; monitor closely on 50i models.
Is the air suspension a worry?
It can leak with age; check ride height and compressor operation.
What should I check on the xDrive system before retailing?
Ensure all four tyres are BMW star-marked and have even tread depth. Tread depth differences greater than 2mm between axles can cause the xDrive transfer box to overheat and fail, leading to costly warranty claims. Always check for low-speed binding during the test drive.
Are there any specific DPF issues on the 30d and 40d models?
The F15 diesels are generally robust, but the DPF will block if the thermostat fails or if the vehicle is used exclusively for short urban trips. Check the iDrive for DPF warnings and verify the engine reaches optimal operating temperature, as a cold engine prevents active regeneration.
How can I verify the condition of the ZF 8-speed gearbox?
The ZF 8HP transmission should shift seamlessly. On the forecourt, shift between Drive and Reverse multiple times; there should be no delay or harsh clunk. While BMW claims it is sealed for life, specialists recommend a fluid and filter change at 60,000 miles to prevent mechatronic wear.
Other X5 model years
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