IsItAGoodCar
Reliability Guide

Common Problems with the
2018 BMW M2

We've identified 3 known issues that can affect the 2018 BMW M2. 1 of these are serious faults that could be expensive to repair.

3
Known Issues
1
Serious
2
Moderate
0
Minor

All Known Issues

Rear Differential Noise / Mount Wear

SeriousGearbox & Transmission

A whining rear differential or a heavy clonk when taking up drive is common on cars that have seen repeated launches or track work. Diff oil neglect and worn rear mounts make the problem worse.

Est. Repair Cost: £350–£2,000
Warning Signs:

Whine that rises with road speed, Thump from the rear when engaging first or reverse

What to Inspect:
  • Check for evidence of recent differential oil changes
  • Drive slowly on full lock and listen for chatter or graunching
Verified by IsItAGoodCar Research Team

Front Suspension Arm / Top Mount Wear

ModerateSuspension & Chassis

The short wheelbase and stiff M chassis mean front tension struts, top mounts, and drop links take a beating on UK roads. Cars that have hit kerbs or potholes can feel nervous at motorway speed.

Est. Repair Cost: £250–£900
Warning Signs:

Knock over broken surfaces, Steering that feels darty or tramlines badly

What to Inspect:
  • Inspect inside-edge tyre wear
  • Look for uneven front ride height or non-matching alignment settings
Verified by IsItAGoodCar Research Team

Charge Pipe / Boost Leak Issues

ModerateEngine

N55 and S55-powered cars can develop boost leaks from cracked plastic charge pipes or split boost joints, especially on mapped cars. Power drops off sharply when this happens.

Est. Repair Cost: £150–£500
Warning Signs:

Sudden loss of boost, Hissing under hard acceleration, Check-engine light after a full-throttle pull

What to Inspect:
  • Ask whether the car has been tuned
  • Inspect boost pipe joints for oily residue
Verified by IsItAGoodCar Research Team

Buying Tips for 2018 BMW M2

  • ✓Check the service history meticulously; the crucial 1,200-mile running-in service (RIS) MUST have been completed on time.
  • ✓On the M2 Competition (S55 engine), listen for any signs of the dreaded 'crank hub' slip, particularly if the car has been tuned or heavily tracked.
  • ✓Inspect the massive brake discs for scoring or a prominent lip; replacing M compound brakes is a significant expense.
  • ✓Check the rear tyres for heavy wear; the M2 aggressively consumes rear rubber, and cheap replacement brands will ruin the handling.
  • ✓Look behind the front bumper grilles to ensure the low-slung oil coolers haven't been damaged by stones or debris.
  • ✓Verify the 7-speed DCT gearbox shifts crisply without juddering; manual cars should have a firm, slip-free clutch.
Check a 2018 BMW M2 by Registration