IsItAGoodCar
Reliability Guide

Common Problems with the
2012 Morgan 3-Wheeler (Modern)

The early Morgan 3-Wheeler was a charismatic re-imagining of the classic cycle-car, using an S&S V-twin engine and Mazda MX-5 gearbox. However, early cars suffered from significant design flaws including compensator failure and bump steer, making them a purchase for enthusiasts willing to address known issues.

What changed for 2012

  • •UK launch year—S&S V-twin with 115bhp
  • •Mazda MX-5 sourced 5-speed gearbox
  • •Fibreglass body over tubular steel chassis
  • •No electronic aids—no ABS, traction control, or airbags

Common MOT watch-outs

  • !Centa compensator failure causing severe vibration
  • !Bump steer on bumpy UK B-roads
  • !Cracked exhaust mounts from V-twin vibration
3
Known Issues
1
Serious
1
Moderate
1
Minor

All Known Issues

Drivetrain Compensator Failure

SeriousGearbox & Transmission

The compensator (between the engine and gearbox) is designed to smooth out V-twin pulses. Original units failed frequently.

Est. Repair Cost: £1,000–£1,800
Warning Signs:

Extreme vibration, Metallic clanging from the drivetrain, Loss of drive

What to Inspect:
  • Ask if the "Centa" upgrade has been performed.
  • Listen for rattling at idle.
Verified by IsItAGoodCar Research Team

Bump Steer / Steering Geometry

ModerateSteering

Early cars suffered from significant bump steer, making them nervous on bumpy UK B-roads.

Est. Repair Cost: £300–£600 (Upgrade kit)
Warning Signs:

Steering wheel jerks over bumps, Unstable feel at speed

What to Inspect:
  • Check if the steering rack has been repositioned or if a kit (e.g., Empire) is fitted.
Verified by IsItAGoodCar Research Team

Cracked Exhaust Mounts

MinorEngine

The high-vibration S&S engine often causes the exhaust headers or mounting brackets to crack.

Est. Repair Cost: £200–£500
Warning Signs:

Loud exhaust blow, Rattling from the side-pipes

What to Inspect:
  • Inspect the exhaust welds and mounting bobbins.
Verified by IsItAGoodCar Research Team

Buying Tips for 2012 Morgan 3-Wheeler (Modern)

  • ✓Check if the Centa compensator upgrade has been fitted
  • ✓Test for bump steer over rough surfaces
  • ✓Inspect exhaust welds and mounting points carefully
20112013–2014
Check a 2012 Morgan 3-Wheeler (Modern) by Registration