BMW xDrive30d

EGR cooler can fail and allow coolant into the intake tract. Documented cases of engine damage shortly after EGR cooler replacement.

Symptoms: Coolant loss, white smoke, engine check light, overheating

Early B57 models (from about 2015/16) show chain elongation with rattling noises on startup. Timing chain replacement requires engine removal. Repair costs comparable to the N57. Significantly rarer from 2018 models.

Symptoms: Metallic rattling on cold start, especially at low temperatures; subsides after warm-up; in extreme cases engine stumble

Bearing damage occurs in the bi-turbo system at higher mileage. Turbine blades can break off and cause engine damage. Frequently encouraged by insufficient oil change intervals.

Symptoms: Whistling or howling under load; blue exhaust smoke; power loss; MIL; in extreme cases sudden power loss from turbo failure

The EGR valve cokes up with frequent short-trip driving and becomes stiff. Stumbling on cold start is characteristic. BMW carried out a voluntary service action.

Symptoms: Stumbling and hesitation on cold start until the engine warms up; power loss; 'Drivetrain malfunction' message; black smoke; EGR valve fault

NOx sensors and SCR dosing unit fail after about 100,000 km or through AdBlue crystallisation. Fault code 26F500 is typical. BMW repairs often cost 2,000–4,000 EUR as entire systems are replaced.

Symptoms: MIL with message 'AdBlue system faulty' or 'Emission system fault'; fault code 26F500; engine runs normally but warning persists

The optional air suspension on the X5 G05 shows air spring and compressor failures from around 80,000 km. The car loses ride height overnight and the compressor runs continuously — expensive but well-documented.

Shortly after the G05 launch (2018), BMW recalled vehicles with production dates 12–16 July 2018 because wheel nuts were over-torqued and can break under high load.

The BMW X5 G05 LCI (production from June 2022) is part of the worldwide IBS recall (Continental MK-C2): signal faults in the brake control system can deactivate ABS and DSC and require significantly higher pedal force.

BMW recalled 2019–2020 X5 G05 vehicles because the starter motor can overheat under electrical overload and ignite combustible material in the engine bay. Software update as the fix.

The over 2.1-tonne X5 G05 wears brake pads and discs significantly faster than more compact vehicles. Especially in city traffic and with spirited driving, short service intervals must be planned.

On the G05 with optional air suspension, compressor and air springs fail from 80,000–120,000 km based on current experience. Expensive to rectify once out of warranty.

As with the F15, the xDrive transfer case on the G05 is sensitive to mismatched tyre rolling circumferences and neglected oil changes. Individual cases of transfer case damage are reported.