Automatic & manual
Servicing and repairs for both automatic and manual Mercedes transmissions.
Engine & Transmission
Mercedes engine and transmission repairs
Gearbox servicing, diagnostics and repairs for Mercedes-Benz, plus timing chain and cambelt work — specialist care without main dealer prices, from technicians with decades of experience.
Engine & Transmission
Specialist engine and gearbox care for your Mercedes
Transmission problems need accurate diagnosis and experienced hands, not guesswork. Benza Autos handles automatic and manual gearbox servicing, fluid changes, fault diagnosis and repairs for Mercedes-Benz vehicles at our Birkenhead workshop.
Whether you're experiencing harsh shifts, slipping, warning lights, or simply due a transmission service, Tony and the team have the experience to investigate properly. We use STAR diagnostics to read transmission fault codes, inspect fluid condition, and identify the root cause before recommending a repair.
We also carry out engine timing chain and cambelt replacement, critical maintenance that protects your engine from catastrophic damage if left too long. Fixed costs are agreed before work begins, and we'll always explain what's involved in plain language.
Part of our Mercedes-Benz specialist work in Birkenhead — all models welcome.
Book transmission workWhy choose us
Why trust us with engine and gearbox work
STAR diagnostics
Transmission fault codes read accurately before any repair decisions are made.
Fluid services
Transmission fluid and filter changes to manufacturer recommendations.
Timing chain work
Engine timing chain and cambelt replacement for peace of mind.
What's included
Engine and transmission services we offer
Gearbox diagnostics
STAR fault code reading, road testing and fluid inspection for shift problems.
Transmission service
Fluid and filter changes for automatic and manual gearboxes to spec.
Automatic gearbox repair
Diagnosis and repair of harsh shifting, slipping, limp mode and related faults.
Manual clutch replacement
Clutch, flywheel and release bearing replacement for manual Mercedes models.
Timing chain replacement
Engine timing chain and tensioner work to prevent costly engine damage.
Cambelt replacement
Cambelt and water pump kits fitted on applicable Mercedes engines.
Our promise
What you can expect every visit
- Automatic and manual gearbox repairs
- Transmission servicing and fluid changes
- STAR diagnostics for gearbox faults
- Timing chain and cambelt replacement
- Fixed costs agreed before work begins
- Decades of Mercedes transmission experience
- Clear explanation of findings and options
- Serving Wirral, Liverpool and Chester
Gearbox issue?
Get a proper diagnosis first
Call with your symptoms or book an appointment. We'll diagnose with STAR equipment, explain what's wrong, and quote for the repair before any work starts.
Customer feedback
Trusted by local drivers
“Really glad I found this garage. Found it based on recommendations and they have not disappointed. I've been back twice and wouldn't go back to the main dealer again. Reasonably priced and the guys really know what they're doing.”
“Friendly, knowledgeable and far better value than the main dealer. Tony and the team take real care with every car.”
“Diagnosed the fault quickly and explained everything clearly. A specialist garage that knows Mercedes inside out.”
FAQ
Common questions
Can you repair Mercedes automatic gearboxes?
Yes. We diagnose and repair automatic transmission issues including harsh shifts, slipping and limp mode faults.
How often should transmission fluid be changed?
Intervals vary by model, typically every 40,000–60,000 miles for automatic gearboxes. We'll advise based on your Mercedes and mileage.
Do you replace timing chains?
Yes. Timing chain and cambelt replacement is available for applicable Mercedes engines, critical maintenance to prevent engine damage.
My gearbox is in limp mode. Can you help?
Yes. Limp mode usually indicates a fault the system has detected. STAR diagnostics will read the code and identify the cause.
Is a main dealer required for gearbox work?
No. We have the diagnostic equipment and experience to service and repair Mercedes transmissions at independent rates.
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Brake replacements using genuine or OE equivalent parts, with steering and suspension repairs you can trust.
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Serving Wirral, Liverpool & Chester
Unit 1, Langdale Court, Corporation Road, Birkenhead, Wirral, CH41 8DT
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