IsItAGoodCar
Reliability Guide

Common Problems with the
2001 MG ZT / ZT-T

The ZT launched in 2001, three years after the Rover 75 and on the same body, with firmer suspension and brakes. Early UK cars were the 160PS and 190PS 2.5-litre KV6 in saloon and ZT-T estate form.

What changed for 2001

  • •Detuned 2.5 KV6 ZT 160 and unique-camshaft ZT 190
  • •Uprated suspension, brakes and steering compared with the Rover 75
  • •Saloon and ZT-T estate bodies, one trim level with an optional Plus pack

Common MOT watch-outs

  • !Front coil spring breakage from corrosion
  • !Brake pipe corrosion along the rear axle
  • !Corroded rear subframe and suspension arms
5
Known Issues
3
Serious
1
Moderate
1
Minor

All Known Issues

ECU Flooding (Blocked Drains)

SeriousElectrics & Electronics

The plenum chamber drains block with leaves, causing water to rise and submerge the engine ECU.

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

Car cuts out, Refusal to start, Random electrical glitches

What to Inspect:
  • Reach into the plenum (below wipers) and feel for standing water or debris
  • Ensure the drain "rubbers" have been cleared or removed
Verified by IsItAGoodCar Research Team

K-Series Head Gasket Failure (1.8 Petrol)

SeriousEngine

The 1.8 K-Series petrol engine is prone to head gasket failure if the cooling system is neglected. Symptoms include overheating and oil/coolant mixing.

Est. Repair Cost: £500–£800
Warning Signs:

Overheating, Oil in coolant / Coolant in oil, Loss of heater performance

What to Inspect:
  • Check the oil filler cap and expansion tank for contamination
  • Verify the coolant level and condition
Verified by IsItAGoodCar Research Team

Brake Pipe Corrosion

SeriousBrakes

The brake pipes can corrode, particularly in areas where road salt is used. This is a serious safety concern and a common MOT failure point.

Est. Repair Cost: £100–£300
Warning Signs:

Spongy brake pedal, Brake fluid leak, MOT failure on corroded pipes

What to Inspect:
  • Inspect the brake pipes for rust and leaks
  • Check the MOT history for brake-related failures
Verified by IsItAGoodCar Research Team

Front Coil Spring Breakage

ModerateSuspension & Chassis

The front coil springs are prone to snapping due to fierce corrosion, particularly on UK roads with salt and potholes. 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
  • Check the MOT history for spring-related failures
Verified by IsItAGoodCar Research Team

Electric Seat Motor Failure

MinorInterior & Trim

The electric seat adjustment motor is not hugely reliable and can fail, leaving the seat stuck in one position.

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

Seat adjustment motor not responding, Seat stuck in one position, Grinding noise from seat motor

What to Inspect:
  • Test the electric seat adjustment through its full range
Verified by IsItAGoodCar Research Team

Buying Tips for 2001 MG ZT / ZT-T

  • Reach into the plenum below the windscreen and check for standing water
  • Check the front springs for corrosion and recent replacement
  • Confirm the VIS motors and thermostat have been attended to
2002
Check a 2001 MG ZT / ZT-T by Registration