IsItAGoodCar
Reliability Guide

Common Problems with the
2001 MG Rover Rover 25 / MG ZR

In summer 2001, MG Rover launched the MG ZR hot hatch, delivering stiffened sports suspension, bold spoilers and the flagship 160PS 1.8 VVC to become one of the UK's top-selling performance hatchbacks.

What changed for 2001

  • •Launch of MG ZR performance derivative in three-door and five-door bodies with lowered sports suspension
  • •Flagship ZR 160 introduced featuring the 160PS 1.8-litre K-Series VVC engine and close-ratio PG1 gearbox
  • •Distinctive styling with deep aerodynamic body skirts, large tailgate spoiler, and 17-inch Straights alloy wheels
  • •ZR 105 (1.4), ZR 120 (1.8) and ZR TD (2.0 L-series diesel) variants broadening budget hot hatch appeal

Common MOT watch-outs

  • !Broken front coil springs caused by firm sports damping over potholed UK tarmac
  • !Corroded metal brake pipes running above the rear beam axle and underfloor fuel tank
  • !Seized rear brake caliper handbrake mechanisms on rear disc-equipped ZR 120 and ZR 160 variants
  • !Severely worn front lower wishbone ball joints and steering track rod ends from hard cornering
3
Known Issues
1
Serious
2
Moderate
0
Minor

All Known Issues

K-Series Head Gasket Failure

SeriousEngine

The standard gasket can fail due to plastic dowels and overheating.

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

Oil/Coolant mixing, Overheating

What to Inspect:
  • Expansion tank and oil cap
Verified by IsItAGoodCar Research Team

Rusting Rear Arches

ModerateBodywork & Rust

Water gets trapped behind the lip of the rear wheel arches, causing rust to rot through from the inside. This is a common MOT advisory.

Est. Repair Cost: £300–£600
Warning Signs:

Bubbling paint on the rear arch edges, Visible corrosion, MOT advisory on arches

What to Inspect:
  • Feel the inner lip of the rear arches for crusty rust
Verified by IsItAGoodCar Research Team

Sunroof and Tailgate Leaks

ModerateBodywork & Rust

The sunroof drains and tailgate seals are known to leak, causing damp carpets and a musty smell in the cabin. Water can also affect electrical components.

Est. Repair Cost: £50–£200
Warning Signs:

Wet carpets, Damp smell in the cabin, Water pooling in the boot

What to Inspect:
  • Check the carpets for dampness
  • Inspect the sunroof drains and tailgate seals
Verified by IsItAGoodCar Research Team

Buying Tips for 2001 MG Rover Rover 25 / MG ZR

  • On ZR 160 models, confirm the VVC mechanism pulls cleanly past 4,000rpm without mechanical rattling
  • Check underbody sills and rear wheel arch lips for structural rust and signs of poor accident repairs
  • Ensure an uprated multi-layer steel (MLS) head gasket and steel locating dowels have been documented
20002002
Check a 2001 MG Rover Rover 25 / MG ZR by Registration