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Gearbox Maintenance & servicing

Trusted destination for exceptional Gearbox Servicing.

Gearbox Maintenance and servicing

Welcome to Onyx Performance, your trusted destination for exceptional Gearbox Servicing tailored to VAG Group cars (Audi, Volkswagen, Seat, Skoda, Porsche), Mercedes, and BMW in and around Slough. Our expert technicians are dedicated to enhancing the performance and longevity of your vehicle’s gearbox, ensuring a smooth and reliable driving experience.

Expert Gearbox Servicing and Remapping for VAG Group Cars, Mercedes, and BMW at Onyx Performance

At Onyx Performance, we understand the nuances of VAG Group cars, Mercedes, and BMW vehicles, particularly when it comes to gearboxes. Your gearbox is a vital component for overall performance, and our specialised gearbox servicing is designed to keep it in top-notch condition.

Specialised Gearbox Remapping for VAG Group Cars and BMW, including XHP Remaps up to Stage 3

In addition to our comprehensive gearbox servicing, Onyx Performance proudly offers specialised gearbox remapping for VAG Group cars and BMW, including XHP remaps up to Stage 3. Our expert remapping services are designed to optimise your vehicle’s performance, responsiveness, and overall driving experience.

Our Comprehensive Services Include

Thorough Diagnostics

Utilising cutting-edge diagnostic tools, we conduct in-depth assessments of your gearbox to identify any potential issues or concerns.

Fluid Replacement

Regular changes of gearbox fluid are crucial to maintain proper lubrication and prevent unnecessary wear. We use high-quality fluids recommended by manufacturers for optimal performance.

Filter Replacement

A clean and functional filter is essential for trapping debris and contaminants. We replace the gearbox filter to ensure optimal filtration and prevent damage to internal components.

Seal and Gasket Inspection

Our technicians inspect and replace seals and gaskets as needed to prevent leaks and preserve the integrity of the gearbox.

Software Updates

Staying current with the latest software updates ensures that your gearbox operates with the latest enhancements and improvements.

Customer Reviews

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Mark Wiltshire profile picture
Mark Wiltshire
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Professional yet friendly, very helpful would recommend 👍
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Paul Forrester profile picture
Paul Forrester
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Nice refurbishment of my alloys
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Noel Kerins profile picture
Noel Kerins
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Excellent service, great quality job on 2 of my black alloys. They also did my father & husbands cars too. Great value for money and a special thanks to Ben.
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Jamie Taylor profile picture
Jamie Taylor
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Had my golf R mapped and tuned to stage 2 very impressed with the work they done Ben and Sam great guys very friendly and very professional would recommend 👍🏻
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DSK profile picture
DSK
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Brought my Audi S3 in for a Stage 3 tune with a bigger turbo and full supporting mods. Things didn’t start smoothly — the Falcon turbo I had fitted from eBay turned out to be faulty and smoked heavily on the dyno.Instead of rushing the job or giving me attitude, they helped me swap it out for a proper Garrett PowerMax and carried on professionally. Then I ran into fueling problems caused by another low‑quality eBay part, and again they took their time, diagnosed the issue properly, fixed it, and made sure everything was right before continuing.After all the setbacks, they still mapped the car, spent a lot of time on it, and didn’t charge me anywhere near what the work was worth.They showed patience, honesty, and real skill. Very happy with the service and the way they looked after me.
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randip
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Highly recommended. Fitted my catless downpipe and full exhaust on my Audi RS7. The sound is amazing! The staff were very friendly and kept me updated at every step of the process
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Dan Simmonds profile picture
Dan Simmonds
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This is the second time I have used Onyx Performance first time for wheel refurbishment and last time for remap and i would use their services again in the future without a doubt. They are very knowledgeable about what they specialise in, they are polite and you can see they care not only about what their customers want to do but also about what they can offer the customer. Thanks to the OP team.
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Taranjit Lehal profile picture
Taranjit Lehal
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Took my Mercedes C200 to Onyx performance for a stage 1 remap, my car is much quicker and throttle response is much better than before the remap. They also advise you about power and gains and the maps are tailored for your specific car and model, no stress on engine or gearbox. Thank Onyx , Brilliant work.
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Carlos fernandez profile picture
Carlos fernandez
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Absolutely fantastic service friendly customer service will definitely be going back for further modifications 5 star service do not go anywhere else other than onyx😎🙏🏼
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Aurimas Gercas profile picture
Aurimas Gercas
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Great service, recommend.

Book Your Gearbox Service in Slough Today

or unparalleled Gearbox Servicing and Remapping in Slough for VAG Group cars, Mercedes, and BMW, trust Onyx Performance. Schedule your appointment today and experience the difference expertise makes in maintaining and optimising your vehicle’s gearbox. Your journey to optimal performance starts with us.
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Why Choose Onyx Performance for Gearbox Servicing and Remapping in Slough

Specialised Expertise

Our technicians are well-versed in the intricacies of VAG Group cars, Mercedes, and BMW gearboxes, ensuring precise and expert servicing.

Quality Parts

We use genuine and high-quality replacement parts to maintain the integrity of your vehicle’s gearbox.

Advanced Diagnostics

Our diagnostic tools allow us to pinpoint issues accurately, enabling efficient and effective gearbox servicing.

Transparent Service

At Onyx Performance, we believe in transparency. We provide clear explanations of the services performed and any recommendations for future maintenance.

Customer Satisfaction

Your satisfaction is our priority. We strive to exceed expectations in every gearbox servicing and remapping, ensuring your vehicle performs at its best.

Trusted in Slough

As a locally established specialist, we’ve built a reputation across Slough and the surrounding areas for reliability, professionalism, and consistent results.

We provide Gearbox Servicing & Maintenance for

Abarth, Alfa Romeo, Audi, Bentley, BMW, Chevrolet, Citroen, Ferrari, Ford, Honda, Hyundai, Infiniti, Jaguar, Kia, Lamborghini, Land Rover, Lexus, Lotus, Maserati, Mazda, McLaren, Mercedes Benz, Mini, Nissan, Peugeot, Porsche, SAAB, Seat, Skoda, Toyota, Vauxhall, Volkswagen, Volvo

Frequently Asked Questions

How do I know if my gearbox needs servicing?
Common signs include difficulty changing gears, slipping gears, unusual noises, or a burning smell. If you notice any of these issues while driving in or around Slough, it’s time to book a gearbox check with us.
How often should a gearbox be serviced?
Manual gearboxes typically require less frequent servicing than automatics, but as a general rule, we recommend a gearbox service every 30,000–60,000 miles, depending on your vehicle and driving style.
Do you service both manual and automatic gearboxes?
Yes – our Slough workshop is fully equipped to maintain and repair both manual and automatic gearboxes across a wide range of makes and models.
What does gearbox servicing involve?

A standard gearbox service includes draining and replacing old transmission fluid, checking seals and gaskets, inspecting for wear, and ensuring everything is running smoothly.

Can gearbox servicing prevent costly repairs?
Yes – regular maintenance helps identify issues early, reducing the risk of major faults and expensive replacements further down the line.

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