IsItAGoodCar
Reliability Guide

Common Problems with the
2005 Ford Focus Mk2 (C307)

The C307 Focus arrived for the 2005 model year with a stiffer bodyshell and the Control Blade rear suspension carried over. UK buyers chose 1.4/1.6 Duratec petrols, 1.6-2.0 TDCi diesels or the 225PS five-cylinder ST.

What changed for 2005

  • •New C307 body in three-door, five-door, saloon and estate forms
  • •1.6 Ti-VCT petrol and 1.6/1.8/2.0 TDCi diesels added to the range
  • •Focus ST launched with a 225PS 2.5-litre five-cylinder turbo
  • •Control Blade independent rear suspension carried over from the Mk1

Common MOT watch-outs

  • !Rear wheel arch and sill corrosion, especially on pre-facelift cars
  • !Worn rear trailing-arm bushes causing vague handling and uneven tyre wear
  • !Diesel smoke-test failures from clogged EGR valves and DPF issues
3
Known Issues
1
Serious
2
Moderate
0
Minor

All Known Issues

1.6 TDCI Turbo Failure

SeriousEngine

Carbon buildup in the oil feed pipe starves the turbo of oil. Repeated failures occur if the system isn’t flushed properly.

Est. Repair Cost: £600–£1,200
Warning Signs:

Whining/Sirening noise from turbo, Loss of power, Black smoke

What to Inspect:
  • Check service intervals (should be 10k miles max)
  • Inspect turbo for play
Verified by IsItAGoodCar Research Team

Instrument Cluster Solder Failure

ModerateElectrics & Electronics

Dry solder joints on the cluster PCB cause various errors, including "Engine Systems Fault" and immobiliser issues.

Est. Repair Cost: £100–£200
Warning Signs:

Gauges dropping to zero while driving, Car refusing to start, Dashboard lights flickering

What to Inspect:
  • Tap the dashboard to see if symptoms change
  • Check for U-series fault codes
Verified by IsItAGoodCar Research Team

Alternator Failure

ModerateElectrics & Electronics

Alternators frequently fail on the 1.6 and 2.0 diesel models, often without warning.

Est. Repair Cost: £200–£400
Warning Signs:

Battery warning light, Burning smell, Whining noise from engine bay

What to Inspect:
  • Test battery voltage with engine running
Verified by IsItAGoodCar Research Team

Buying Tips for 2005 Ford Focus Mk2 (C307)

  • Check the rear arches behind the plastic liners and the boot floor for rust
  • On the ST, confirm the cam belt and water pump were done and listen for turbo whine
  • Drive over speed humps to hear rear bush clonks before buying
20042006–2007
Check a 2005 Ford Focus Mk2 (C307) by Registration