SevereAffected: 2004-201160,000–120,000 miles

Ford Focus Mk2 1.8 TDCi — Suspension Coil Spring Snapping

A very common MOT failure in the UK. Suspension coil springs corrode and snap, usually near the bottom pigtail.

Severity

Severe

DIY Difficulty

Hard

Est. Cost

£150–£300

OBD Codes

None

Component Diagram

Suspension

Typical layout and location for the Suspension assembly.

Reference Illustration

Symptoms

Loud 'twang' or bang when turning the steering wheel at low speeds
Car sits noticeably lower on one side
Grating noise over bumps

Root Cause

The protective coating on the steel spring chips from stone impacts. Salt water corrodes the exposed steel, weakening the spring until it fractures under load.

How To Fix

Visually inspect all four springs for fractures at the very bottom coil.
Always replace coil springs in pairs across an axle to maintain handling balance.
Cost: £150-300 per pair at an independent garage.

Estimated Repair Costs

Repair Option	Est. Cost (GBP)
DIY (parts only)	£60–£120
Independent Garage	£150–£300
Main Dealership	£240–£480

Other Faults on This Variant

Electric Window Regulator Cable Failure

Minor

2004-201150,000–120,000 miles£100–£200

The cables inside the electric window regulator mechanism fray and snap, causing the window glass to drop into the door frame.

Engine Thermostat Sticking Open

Minor

2004-201160,000–120,000 miles£100–£250

The engine coolant thermostat fails in the 'open' position. The engine never reaches its optimal operating temperature, killing fuel economy.

Starter Motor Solenoid / Brush Wear

Severe

2004-201170,000–130,000 miles£150–£350

The starter motor wears out internally. This is particularly common on vehicles equipped with Stop/Start systems.

Disclaimer: Repair cost estimates are indicative and based on community data. Always get a quote from a qualified mechanic before proceeding with any repair.