ModerateAffected: 2012-201770,000–120,000 miles

Ford Fiesta Mk7 1.0 EcoBoost 100bhp — Shock Absorber Oil Leak and Failure

Shock absorbers lose their damping efficiency over time, and eventually blow their seals, leaking hydraulic fluid.

Severity

Moderate

DIY Difficulty

Moderate

Est. Cost

£200–£400

OBD Codes

None

Component Diagram

Suspension

Typical layout and location for the Suspension assembly.

Reference Illustration

Symptoms

Car bounces multiple times after hitting a bump
Visibly wet, oily residue running down the outside of the shock absorber body
Increased body roll in corners and longer braking distances

Root Cause

The internal rubber seals wear out from millions of oscillations. Grit on the damper shaft accelerates the wear, tearing the seal.

How To Fix

Perform a 'bounce test' on each corner of the car — it should settle immediately after one rebound.
Replace dampers in axle pairs.
Consider replacing top mounts and bump stops simultaneously to save on future labour.
Cost: £200-400 per pair.

Estimated Repair Costs

Repair Option	Est. Cost (GBP)
DIY (parts only)	£80–£160
Independent Garage	£200–£400
Main Dealership	£320–£640

Other Faults on This Variant

Timing Chain Stretch and Tensioner Failure

Critical

2012-201540,000–100,000 miles£600–£1200

Pre-2016 Ford 1.0 EcoBoost engines suffer from premature timing chain stretch. The plastic tensioner can fail, causing catastrophic engine damage with little warning.

Coolant Loss from Cylinder Head

Severe

2012-201860,000–120,000 miles£500–£900

The 1.0 EcoBoost has an integrated exhaust manifold cast into the cylinder head. This design causes head gasket stress and coolant loss, sometimes causing overheating.

Thermostat Failure and Overheating Risk

Moderate

2012-201850,000–100,000 miles£80–£180

The plastic thermostat housing on the 1.0 EcoBoost is prone to cracking. A stuck-open thermostat causes the engine to run cold and burn more fuel; a stuck-closed thermostat causes rapid overheating.

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