Peugeot 108
Peugeot 108 Semi-Automatic Problems? We’re the UK’s #1 Experts in Fixing Them.
️ Common Peugeot 108 2-tronic Gearbox Faults
- P0900 fault code won’t clear
- Gearbox won’t calibrate
- Car stuck in gear or won’t engage
- Replaced actuator but issue remains
- Drivability problems or total breakdown
- Clutch slipping feels like no power
- Strange bleeping noise going up hills
- Flashing "N" whilst slowing down
Why Replacing Just the Actuator Isn’t Enough
Most garages just change the actuator — but that’s not a complete fix. These systems wear as a unit. A proper repair includes:
✔️ New OE clutch + Release bearing
✔️ Full clutch actuator rebuild
✔️ Gear shift motor check
✔️ Diagnostics, gearbox oil, calibration
✔️ Final test drive and optimisation
✔️ A visual inspection and cleaning of known troublesome connectors pins and earths, including the tcm relay.
Mk1 vs Mk2 Peugeot 107 v 108: Key Differences
Peugeot 107 Gearbox 1: TT02
107 MMT Gearbox Mk1 (2005–2014)
- Prone to gearbox ECU failures
- Original clutch design
- Most failures trace back to electronics or actuator
Peugeot 108 Gearbox 2: TT56
108 MMT Gearbox Mk2 (2014–2025)
- Stronger clutch
- ECU is more sensitive
- Can suffer gearbox synchro failure after heavy braking/crash
✅ Services We Offer for the Peugeot 107 2-tronic:
Full Repairs
From £795
✔️ Price includes labour
✔️ OE Clutch Kit (Aisin)
✔️ Nut & bolt clutch actuator rebuild
✔️ Gear shift motors cleaned/checked
✔️ Gearbox Oil Replaced
✔️ Diagnostics & Calibration
✔️ Road Test Gear Optimisation
✔️ Nationwide collection & delivery available
Clutch Actuator Refurbishment
£225
✔️ Send in your original OE unit
✔️ Rebuilt by experts
✔️ Next day tracked return
✔️ Full nut & bolt strip down
✔️ High quality replacement parts
✔️ Fitting advice available
✔️ Your unit arrives back to you as shown in image
Buy Parts
Call the store
✔️ New! 108 Gearshift motors
✔️ New! Clutch actuator motors
✔️ Transmission ECU's
✔️ Stroke sensors
✔️ Gearboxes
✔️ Fitting advice available
✅ Thinking of selling your car? We pay more for cars with transmission issues — running or not.
⚠️ Warning About Chinese Actuators
Many aftermarket actuators (especially from China) don’t work — or fail again quickly. They can cause more problems and confuse diagnosis. If you’ve fitted one, do not throw away your old original unit. We only refurbish genuine OE parts.
Why Choose MMT Experts for your 108?
✅ Over 30 years experience
✅ Thousands of cars repaired
✅ Cheapest full repair price in the UK
✅ Fastest actuator refurb turnaround
✅ Friendly advice anytime
✅ Nationwide recovery service available
✅ Only specialists in the UK
✅ Trusted by main dealer & workshops
Not Sure What to Do Next?
Speak to a real 108 expert today. No pressure, just honest advice from people who actually understand your car.
07702 795962
Peugeot 108 2-Tronic Gearbox Problems & Repairs | MMT Experts
Understanding the MMT (Multi-Mode Transmission) System in the Peugeot 108
At MMT Experts, we specialize in diagnosing, repairing, and reconditioning semi-automatic gearbox systems found in the Peugeot 108 2-Tronic. The term MMT (Multi-Mode Transmission) refers to an advanced electro-hydraulic system that blends the fuel efficiency of a manual gearbox with the convenience of an automatic. While Peugeot refers to it as the "2-Tronic," it operates using the same MMT principles found in other manufacturers’ systems.
Our company name, MMT Experts, reflects our deep technical knowledge and hands-on experience with these exact transmission systems — and the Peugeot 108 2-Tronic is one of the most common models we repair.
How the 2-Tronic (MMT) System Works
The Peugeot 108 2-Tronic transmission is built on a manual gearbox platform but uses electronic actuators to handle gear shifts and clutch operation automatically.
Key Components:
Manual transmission foundation with a traditional clutch and gear system.
Electro-hydraulic actuators manage gear changes and clutch engagement.
Transmission Control Unit (TCU) coordinates all operations for smooth driving.
Operating Modes:
Automatic Mode: Gear changes happen automatically based on throttle, speed, and load.
Manual Mode: The driver can shift gears manually using the gear lever, while the clutch remains fully automated.
Creep Function:
Allows slight forward movement without throttle input — ideal for parking and traffic queues.
Why Drivers Choose the Peugeot 108 2-Tronic
Fuel Efficiency: Maintains the economy of a manual gearbox.
Urban Convenience: Automatic functionality is perfect for stop-start city driving.
Driver Control: Offers the option to switch between automatic and manual operation.
Common 2-Tronic (MMT) Faults in the Peugeot 108
Despite its advantages, the 2-Tronic system can develop faults over time. At MMT Experts, we've repaired hundreds of Peugeot 108s suffering from these issues.
Typical Symptoms:
Stuck in Neutral: Gearbox won’t engage any gears.
Loss of Drive: The car drops into neutral unexpectedly.
Flashing "N" Light: A key sign of gearbox communication faults.
Inconsistent Gear Shifts: Jerky or delayed gear changes.
Common Fault Codes (Diagnostic Trouble Codes):
P0900: Clutch Actuator Circuit Fault
P0810: Clutch Position Control Error
P0909: Gear Select Control Fault
P0919: Gear Shift Position Control Error
These issues are usually caused by worn clutch actuators, faulty gear selectors, or electrical faults within the system.
How the Actuators Work
Clutch Actuator:
Manages the clutch engagement automatically.
Worn actuators lead to poor gear engagement and slippage.
Gear Shift Actuator:
Selects gears based on signals from the TCU.
Precision is key — any delay or fault disrupts driving performance.
TCU Synchronization:
The Transmission Control Unit coordinates both actuators.
If it fails or gets incorrect signals, gear changes become erratic.
Our Peugeot 108 MMT Repair Solutions
MMT Experts is a trusted name for 2-Tronic gearbox repairs, offering:
Expert Diagnostics: Full fault-code analysis and system testing.
Actuator Reconditioning: Using OEM-grade parts for long-lasting performance.
Clutch Replacement: Fitted and calibrated for the 2-Tronic system.
Software Updates: Ensures your system runs the latest logic for smoother shifting.
Electrical Repairs: Fixing TCU wiring faults and sensor issues.
Why Choose MMT Experts?
Lifetime Warranty on all reconditioned actuators and selector units.
Nationwide Collection and delivery available.
Fast Turnaround times — most repairs completed within days.
15+ Years of Experience with MMT/2-tronic systems just like the Peugeot 107 2-Tronic.
We don't just fix gearbox faults — we restore your car to 100% working condition, using genuine parts, precise calibration, and deep knowledge of Peugeot’s MMT system.
Book Your Peugeot 108 Gearbox Repair Today!
If your Peugeot 108 2-Tronic is showing fault lights, stuck in gear, or struggling to drive — don’t wait. These issues can worsen over time.
Call: 07702 795962
Email: support@mmtexperts.com
Workshop: Windsor, Berkshire, UK
Let MMT Experts bring your Peugeot 108 back to life with a smooth, reliable gearbox that feels factory-fresh.
