IsItAGoodCar
Reliability Guide

Common Problems with the
2002–2003 MG Rover Rover 75 / MG ZT

We've identified 5 known issues that can affect the 2002–2003 MG Rover Rover 75 / MG ZT. 2 of these are serious faults that could be expensive to repair.

5
Known Issues
2
Serious
3
Moderate
0
Minor

All Known Issues

ECU Flooding

SeriousElectrics & Electronics

Water enters the engine ECU due to blocked plenum drains.

Est. Repair Cost: £400–£800
Warning Signs:

No-start condition, Engine cutting out, Multiple dash warnings

What to Inspect:
  • Drain holes in the plenum chamber
Verified by IsItAGoodCar Research Team

Clutch Slave Cylinder

SeriousGearbox & Transmission

Concentric slave cylinder inside the gearbox can leak, requiring gearbox removal.

Est. Repair Cost: £600–£900
Warning Signs:

Loss of clutch pressure, Leaking fluid from bellhousing

Verified by IsItAGoodCar Research Team

KV6 VIS Motor Failure

ModerateEngine

The Variable Intake System motors on the 2.0 and 2.5 V6 engines fail, causing loss of power and a rattling manifold.

Est. Repair Cost: £150–£400
Warning Signs:

Lack of power at high revs, Rattling "bag of marbles" sound, Poor fuel economy

What to Inspect:
  • Listen for rattling from the plastic intake manifold
Verified by IsItAGoodCar Research Team

Front Coil Spring Breakage

ModerateSuspension & Chassis

The front coil springs are prone to snapping due to corrosion, particularly on UK roads. This is a common MOT failure.

Est. Repair Cost: £100–£250
Warning Signs:

Clunking from the front end, Car sitting lower on one side, MOT failure on broken spring

What to Inspect:
  • Inspect the front springs for corrosion and cracks
Verified by IsItAGoodCar Research Team

Diesel Fuel Pump and MAF Failure

ModerateEngine

On the 2.0 CDTi diesel, the in-tank fuel pump and mass air flow sensor are known failure points, causing poor running and loss of power.

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

Loss of power, Poor fuel economy, Engine management light

What to Inspect:
  • Test drive for smooth power delivery
  • Check for stored fault codes
Verified by IsItAGoodCar Research Team

Buying Tips for 2002–2003 MG Rover Rover 75 / MG ZT

  • Check the plenum chamber (below the wipers) for standing water; blocked drains will flood the engine ECU, destroying it.
  • On 1.8-litre models, verify if the head gasket has been upgraded to a multi-layer steel (MLS) version.
  • On KV6 models, listen for a rattle from the intake manifold, indicating failing VIS (Variable Intake System) motors.
  • On diesels, check for smooth power delivery; failing low-pressure fuel pumps or MAF sensors are common.
  • Inspect the rear tubular subframe carefully; they are highly prone to severe structural rust and are expensive to replace.
  • Test all interior electronics, including the instrument cluster display, which frequently suffers from dead pixels.
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Check a 2002–2003 MG Rover Rover 75 / MG ZT by Registration