IsItAGoodCar
Reliability Guide

Common Problems with the
1999 Rover 25

The Rover 25 launched as a facelifted evolution of the popular 200 Series, sharing its mechanicals with the MG ZR. Available with K-Series engines from 1.1 to 1.8 litres, it offered a budget-friendly hatchback experience but inherited the K-Series head gasket vulnerability that would define its ownership story.

What changed for 1999

  • •UK launch as successor to the Rover 200 Series
  • •K-Series engines from 1.1 to 1.8 litres
  • •Shared mechanicals with MG ZR
  • •Conventional steel chassis with independent rear suspension

Common MOT watch-outs

  • !K-Series head gasket failure—check oil cap and expansion tank
  • !Rusting rear arches from trapped moisture
2
Known Issues
1
Serious
1
Moderate
0
Minor

All Known Issues

K-Series Head Gasket Failure (HGF)

SeriousEngine

The 1.1, 1.4, 1.6, and 1.8 engines are all prone to gasket failure due to plastic dowels and a small coolant capacity.

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

"Mayonnaise" under the oil cap, Overheating, Oil in the coolant expansion tank

What to Inspect:
  • Check the oil filler cap and expansion tank
  • Verify the radiator is in good condition
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.

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

Bubbling paint on the rear arch edges

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

Buying Tips for 1999 Rover 25

  • ✓Check the oil filler cap and coolant expansion tank for contamination
  • ✓Inspect the rear arch inner lips for rust
  • ✓Ensure the timing belt and water pump have been changed every 4 years
2000–2002
Check a 1999 Rover 25 by Registration