DSG Gearbox Servicing Specialists in Langley, Slough

Direct-Shift Gearboxes (DSG) require specialist knowledge and precision care to maintain their smooth, rapid gear changes. At Onyx Performance in Langley, Slough, we provide expert DSG gearbox servicing, ensuring your dual-clutch transmission performs flawlessly and avoids costly repairs.

Our technicians carry out complete fluid replacements, check mechatronics, inspect clutches and seals, and use manufacturer-approved DSG lubricants to protect your gearbox. Regular servicing prevents wear, overheating, and sluggish shifting, keeping your vehicle driving smoothly and reliably.

Drivers from Slough, Langley, and nearby areas trust Onyx Performance for our specialist DSG expertise, advanced equipment, and fast, efficient service. Whether it’s routine maintenance or addressing specific transmission concerns, we ensure your DSG gearbox remains in peak condition.

Why Choose Onyx Performance?

As Seen on Carwow

We’ve been proudly featured on Carwow – a testament to the quality, professionalism, and performance-focused results that set us apart. Watch our feature here to see us in action.

Expertise You Can Trust

With years of experience and deep technical knowledge, our team understands performance vehicles inside and out – from custom remaps to high-end servicing.

Advanced Workshop & Tools

We operate from a state-of-the-art facility in Slough, equipped with cutting-edge diagnostics, dyno testing, and industry-leading tools for accurate, high-quality work.

Tailored Solutions for Every Vehicle

We don’t believe in one-size-fits-all. Every car gets a bespoke approach, ensuring the best results whether it’s a remap, upgrade, or routine service.

Trusted Nationwide

Performance enthusiasts from across the UK come to Onyx because they know they’ll receive premium-quality workmanship, careful attention to detail, and honest advice.

Complete Care, All in One Place

From tuning and servicing to tyres, trackers, and immobilisers – we offer a full suite of services under one roof, all with a strong focus on safety, reliability, and top-tier customer support.

Customer Reviews

    
 
 
       Posted on Google  
   
   Anil Soni 
 
 
 
 Trustindex verifies that the original source of the review is Google. Thank you guys for your professional, dedicated and honest opinion. You made my day by fixing my son's car so he could use it for DoE at very short notice. Max and Kay were brilliant and I would definitely recommend this garage as a organised and trustworthy business. Keep up the good work.
  
 
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   subin pradhan 
 
 
 
 Trustindex verifies that the original source of the review is Google. Took my BMW 440i to install downpipe and mid pipe. Top guys with good service and reasonable price. Will be going back for more work done.
  
 
      Posted on Google  
   
   J JareCki 
 
 
 
 Trustindex verifies that the original source of the review is Google. I just done Stage1 in my audi s3, car drive superb, excelent service, thanks Ben,Sam and Onyx team! Brilliant work
  
 
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   Dan May 
 
 
 
 Trustindex verifies that the original source of the review is Google. Honest and knowledgable! Rare these days - saves me hundreds by checking my Golf R properly. Will only use these guys from now on
  
 
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   Darren Dawes 
 
 
 
 Trustindex verifies that the original source of the review is Google. I took my jaguar xfr to these guys for a re map . Excellent service. They could not have been more helpful. Very knowledgeable they definitely know what they are doing. If your looking for a re map I would highly recommend you speak to them.
  
 
      Posted on Google  
   
   Hana 
 
 
 
 Trustindex verifies that the original source of the review is Google. I was recommended Onyx to get my diamond-cut alloys refurbished. I am located an hour away but the recommendation was important so decided to leave my car with these guys. First impressions, the team were very polite, friendly (Essan, Ben and the guys that actually did the refurb in the intense heat) The prices were competitive. And the quality of work was super. There was slight miscommunication post the sale (which happens) but I was pleased they resolved this to my satisfaction. One idea I would suggest is advising the customer 'before' the work starts that the TPF valves may need replacing so we have the option to decide whether to do it whilst the wheels are off anyway rather than post refurb to avoid scratching the newly done alloys. Otherwise happy with my overall experience.
  
 
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   Mark 
 
 
 
 Trustindex verifies that the original source of the review is Google. Amazing service
  
 
      Posted on Google  
   
   pavan khangura 
 
 
 
 Trustindex verifies that the original source of the review is Google. The best experience ever well organised clean friendly team and the experience was amazing A big up to the whole staff.

Book Your DSG Gearbox Service in Langley, Slough

Maintain the precision and reliability of your DSG gearbox with a professional service at Onyx Performance in Langley, Slough. We provide fluid replacement, clutch inspection, and full transmission checks using manufacturer-approved products. Book today to protect your dual-clutch gearbox and enjoy smooth, consistent gear changes.

5-Star Google Reviews

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Why Choose Onyx Performance for Servicing?

Experts in Performance Cars

We know how to properly care for performance, modified, and luxury vehicles. Our team has the skills and experience to handle specialist requirements confidently.

Correct Service Schedules

Every service follows the exact schedule recommended by your vehicle’s manufacturer, helping maintain performance and protect your warranty.

Quality or OEM Parts

We only use high-quality aftermarket or original manufacturer parts, ensuring long-lasting reliability and top-level performance.

Full Vehicle Inspection

Our service goes beyond just changing oil. We inspect all key systems to keep your car safe, smooth, and road-ready.

Honest Advice, No Surprises

With transparent pricing and expert recommendations, you’ll always know what your car needs – no upselling, no hidden fees.

Fast, Trusted & Tracked

We offer quick turnaround, maintain service records, and send reminders – that’s why customers travel to us from across the UK.

Frequently Asked Questions

How often should a DSG gearbox be serviced?

Typically every 40,000–60,000 miles, depending on manufacturer recommendations and driving conditions, to prevent wear and maintain smooth operation.

Can DSG servicing prevent gear slipping or hesitation?

Yes – worn fluid or faulty components are common causes of slipping. Regular servicing keeps shifting smooth and responsive.

Do you service all DSG-equipped vehicles?

Absolutely – we work on a wide range of vehicles equipped with dual-clutch transmissions, from everyday cars to performance models.

What does a DSG service include?

We replace the DSG fluid, inspect clutches, seals, and mechatronics, and top up or replace lubricants with manufacturer-approved products.

Can servicing improve DSG longevity?

Yes – regular servicing reduces wear, prevents overheating, and extends the overall lifespan of your DSG transmission.

Is your DSG service warranty-friendly?

Yes – all work uses approved fluids and follows recommended procedures, ensuring your warranty remains intact.

Get a quick quote

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