IsItAGoodCar
Reliability Guide

Common Problems with the
2016 BMW X4 (F26)

The M40i joined the X4 range in 2016 with a 355hp turbo straight-six, M Sport suspension and 19-inch wheels, giving the F26 a genuine performance flagship.

What changed for 2016

  • •3.0-litre turbocharged straight-six M40i with 355hp and 0-62mph in 4.7 seconds.
  • •Sports exhaust, stiffer suspension, M Sport styling and 19-inch alloy wheels.
  • •The M40i became the first M Performance X4, bridging the gap to the full X4 M that arrived in 2019.

Common MOT watch-outs

  • !Brake disc and pad wear on hard-used M40i cars, often felt as judder.
  • !Tyre sidewall damage and uneven wear on 19/20-inch run-flats, often hidden until MOT.
  • !DPF and EGR faults on 20d and 30d cars doing short UK journeys.
3
Known Issues
2
Serious
1
Moderate
0
Minor

All Known Issues

Transfer Case Judder

SeriousGearbox & Transmission

The ATC35L xDrive transfer case clutch pack is highly sensitive to rolling circumference differences between front and rear axles. Running non-star-marked or mismatched tyres causes shuddering and driveline snatch.

Est. Repair Cost: £1,000–£2,500
Warning Signs:

Hesitation or shudder under moderate acceleration between 20–40 mph, Stuttering or crabbing when turning tightly into parking bays, 4x4 and Drivetrain malfunction warnings

What to Inspect:
  • Check that all four tyres are identical brand and model with BMW star (*) marking
  • Measure tread depth differences across all four tyres (must be within 2mm)
  • Perform low-speed full-lock turns in both directions
Verified by IsItAGoodCar Research TeamUpdated

N47/B47 Timing Chain & EGR

SeriousEngine

Early 2014 models with N47 diesels carry rear timing chain stretch risks, while all diesel variants are affected by the critical BMW EGR cooler recall to prevent coolant leakage and intake fires.

Est. Repair Cost: £0–£2,500
Warning Signs:

Rattling metallic scraping sound from rear of engine on cold idle, Unexplained drop in coolant expansion tank level, Sweet burning smell through cabin air vents

What to Inspect:
  • Listen closely to rear engine bulkhead on cold start for chain slap
  • Verify BMW main dealer recall records for EGR cooler and intake replacement
Verified by IsItAGoodCar Research TeamUpdated
Official Recalls & Reference Documents:

Steering Rack Knock

ModerateSteering

The EPS steering rack develops internal mechanical play in the thrust piece bush, leading to a loose knocking sound transmitted directly through the steering column when driving over broken pavement.

Est. Repair Cost: £200–£1,200
Warning Signs:

Dull knocking felt in hands when negotiating low-speed potholes, Rattle when rocking steering wheel back and forth with engine off, Vague on-centre steering response

What to Inspect:
  • Rock steering wheel sharply left and right with engine idling to check for clunks
  • Ask if the official BMW steering rack thrust piece repair kit (part 32106891974) has been fitted
Verified by IsItAGoodCar Research TeamUpdated

Buying Tips for 2016 BMW X4 (F26)

  • Verify the M40i has had its running-in service and regular oil changes.
  • Check for aftermarket tuning or a remap, which stresses the transfer case.
  • Inspect the rear subframe and suspension bushes for corrosion and play.
20152017–2018
Check a 2016 BMW X4 (F26) by Registration