Toyota Auris Mk1 1.6 V-Matic — MMT Actuator and Clutch Failure
The Multi-Mode Transmission (MMT) used on the Auris is an automated manual gearbox. It suffers from premature clutch wear and catastrophic electric actuator failure.
Severity
CriticalDIY Difficulty
Professional Only
Est. Cost
£800–£1500
OBD Codes
P0810P0900Clutch
Typical layout and location for the Clutch assembly.
Symptoms
- Red 'cog' warning light on the dashboard
- Car drops into Neutral while driving
- Jerky, aggressive gear changes
- Car refuses to engage gears from a standstill
Root Cause
The electric clutch actuator motor burns out from constantly slipping the clutch in urban driving. The physical clutch plate also wears out much faster than on a manual car.
How To Fix
- Replace clutch actuator assembly (£600-800).
- Replace clutch and pressure plate (£400-600).
- Requires Toyota Techstream software to calibrate the new clutch bite point and actuator strokes.
- Total repair cost often writes off older vehicles.
Estimated Repair Costs
| Repair Option | Est. Cost (GBP) |
|---|---|
| DIY (parts only) | £320–£600 |
| Independent Garage | £800–£1500 |
| Main Dealership | £1280–£2400 |
Other Faults on This Variant
Air Conditioning Condenser Leak (Stone Damage)
MinorThe air conditioning condenser is mounted at the very front of the cooling pack, making it highly susceptible to stone damage from the road, leading to refrigerant loss.
Front Anti-Roll Bar Drop Link Wear
MinorThe front anti-roll bar drop links wear out on heavily potholed UK roads, causing an annoying knocking sound at low speeds.
Alternator / Smart Charge System Failure
SevereModern vehicles use smart charging systems to reduce engine load, but the complex regulators on the alternators frequently fail.
Disclaimer: Repair cost estimates are indicative and based on community data. Always get a quote from a qualified mechanic before proceeding with any repair.