SevereAffected: 2009-201370,000–130,000 miles

Volkswagen Golf Mk6 1.6 TDI 105bhp — Starter Motor Solenoid / Brush Wear

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

Severity

Severe

DIY Difficulty

Moderate

Est. Cost

£150–£350

OBD Codes

None

Symptoms

A single loud 'click' when turning the key, but engine doesn't crank
Engine cranks very slowly despite a fully charged battery
Whirring or grinding noise after the engine starts

Root Cause

The carbon brushes inside the motor wear down to the copper wiring, or the contacts inside the solenoid burn out from repeated arcing.

How To Fix

Confirm battery voltage is strong under load (to rule out a dead battery).
Replace the starter motor unit.
Ensure main earth straps from engine block to chassis are clean and tight.
Cost: £150-350

Estimated Repair Costs

Repair Option	Est. Cost (GBP)
DIY (parts only)	£60–£140
Independent Garage	£150–£350
Main Dealership	£240–£560

Other Faults on This Variant

EGR Cooler Failure and Soot Ingestion

Severe

2009-201360,000–120,000 miles£400–£800

The 1.6 TDI common-rail engine has a well-documented EGR cooler failure. Coolant can leak into the intake causing rough running or, in severe cases, catastrophic engine failure from hydro-lock.

Piezo Injector Failure (Siemens/Continental)

Critical

2009-201360,000–120,000 miles£300–£1500

The 1.6 TDI uses Siemens/Continental piezo injectors which are incredibly prone to sudden electrical failure, causing immediate engine shutdown.

EGR Valve and Cooler Blockage

Severe

2009-201370,000–130,000 miles£500–£800

The EGR valve and cooler unit is buried at the back of the engine and frequently blocks with carbon or fails electrically. Replacement is labour-intensive.

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