Mercedes 7G-Tronic automatic transmission undergoing specialist diagnostics and repair

Mercedes Gearbox Repairs – Specialist Solutions for A-Class, C-Class, E-Class, GLC and More

Mercedes gearbox repair and reconditioning specialists. Expert fixes for 7G-Tronic, 7G-DCT and 9G-Tronic gearboxes across A-Class, C-Class, E-Class and more.

Mercedes Gearbox Repair Specialists

Mercedes-Benz is known for combining luxury with engineering excellence. Models like the A-Class, C-Class, E-Class and GLC are fitted with advanced transmissions such as the 7G-Tronic, 7G-DCT and 9G-Tronic gearboxes. These provide smooth power delivery and efficiency — but when faults arise, they demand specialist expertise to repair correctly.

At Gearbox Gurus, we provide nationwide Mercedes gearbox repairs, diagnostics and reconditioning. Using dealer-level diagnostic software, OEM-quality parts and specialist repair methods, we deliver dealership-standard service at a fraction of the cost.

Ready to get your gearbox diagnosed and repaired by specialists?

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Mercedes 7G-Tronic automatic transmission undergoing specialist diagnostics and repair

Common Mercedes Gearbox Problems

Harsh or delayed gear changes across all forward gears.

Juddering or hesitation during acceleration.

Failure to select reverse or other specific gears.

Slipping under heavy load or total loss of drive.

Whining, humming or clunking noises coming from the transmission tunnel.

Overheating or limp mode activation restricting performance.

Error codes such as P0715, P0720, P0730, P2767, P17E8.

Faults are regularly repaired across Mercedes gearboxes, including the 7G-Tronic, 7G-DCT and 9G-Tronic. These symptoms often start small but can quickly escalate into serious gearbox damage if not diagnosed early. Whether it’s a Mercedes A-Class with 7G-DCT clutch wear, a C-Class with 7G-Tronic shifting issues, or an E-Class 9G-Tronic fault, experienced gearbox specialists have the knowledge and tools to get your Mercedes back to peak performance. If your Mercedes is showing gearbox problems, don’t wait for them to worsen. At Gearbox Gurus, we make repairs simple, professional and nationwide.

Why Choose Us

Why Drivers Nationwide Rely On
Gearbox Gurus

Comprehensive Warranty

01

Comprehensive Warranty

Every repair is backed by our minimum 12-month Guru Guarantee for complete peace of mind.

Expert Craftsmanship

02

Expert Craftsmanship

Over 20 years of combined experience delivering high-quality gearbox repairs with precision, reliability and fast turnaround times.

Nationwide Vehicle Recovery

03

Nationwide Vehicle Recovery

Safe and reliable collection and delivery services, transporting your vehicle securely across the UK.

Quick Turnaround

04

Quick Turnaround

We minimise downtime with a streamlined repair process. Most vehicles are completed within 5 to 7 working days, ensuring you're back on the road quickly and safely.

Higher Standards, Lower Cost

05

Higher Standards, Lower Cost

Enjoy main dealer quality at a fraction of the cost. Our expert repairs deliver outstanding value with no compromise on standards.

5000+
Gearboxes Rebuilt
20+
Years Experience
99%
Customer Satisfaction

FAQ

Frequently Asked Questions

We offer straightforward and comprehensive responses to the most frequently asked questions about our gearbox solutions.

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Which automatic gearboxes do you work on?

We work on all major types of automatic transmissions, including DSG, DCT, CVT, ZF, Powershift, and more. Whether it's an Audi with DSG, a Mercedes with 7G-DCT, a Ford Powershift, or a BMW with a ZF gearbox, our gearbox specialists have the expertise and dealer-level diagnostics to handle it.

Do I need to bring my vehicle to you?

No — we offer a fully managed nationwide collection and delivery service. Our team will arrange a convenient time to collect your vehicle, complete the repair with our gearbox specialists, and return it directly to your door. You'll receive regular updates throughout the process.

Do you repair manual gearboxes too?

Our primary specialisation is automatic transmissions, however we do assess manual gearbox issues on a case-by-case basis. Contact our team to discuss your specific vehicle and we'll advise whether we can help.

How often should I service my automatic gearbox?

We recommend an automatic gearbox service every 30,000–40,000 miles or every 3–4 years, whichever comes first. Regular servicing — including fluid changes and filter replacements — is the single most effective way to prevent costly faults and extend your gearbox's life.

Can I still drive if my gearbox is faulty?

We strongly advise against it. Continuing to drive with a faulty gearbox risks accelerating internal damage, potentially turning a manageable repair into a complete rebuild. If you notice slipping, jerking, warning lights, or unusual noises, contact us immediately and consider arranging collection.

What's the difference between gearbox replacement and reconditioning?

Replacement involves fitting a new or second-hand gearbox unit, which can be costly and doesn't guarantee the replacement unit is fault-free. Reconditioning means our gearbox specialists completely dismantle your existing gearbox, replace every worn component, and reassemble it to manufacturer standards — often at a significantly lower cost and backed by our Guru Guarantee.

How do I know if my gearbox needs repairing?

Common signs include: delayed or rough gear changes, slipping between gears, warning lights on your dashboard, unusual noises when changing gear, or fluid leaks beneath your vehicle. If you're experiencing any of these symptoms, we recommend booking a diagnostic assessment as early as possible.

How long does gearbox reconditioning take?

Most reconditioning jobs are completed within 5–10 working days, depending on the complexity of the repair and parts availability. We'll provide you with a clear estimate at the diagnostic stage and keep you updated throughout.

How much does gearbox repair or reconditioning cost?

Costs vary depending on the vehicle, gearbox type, and extent of the fault. We quote full reconditioning case by case, and we always provide a detailed quote before any work begins.

Is gearbox reconditioning better than replacement?

In most cases, yes. Reconditioning restores your original gearbox to manufacturer standards using quality OEM or equivalent parts, and is typically more cost-effective than a new replacement unit. It also comes with our minimum 12-month Guru Guarantee, giving you full peace of mind.

How can I prevent gearbox problems in the future?

The best prevention is regular servicing — ensuring your transmission fluid is changed at the recommended intervals. Avoid aggressive driving habits such as holding the car on a hill using drive, and if you notice any early warning signs, don't delay seeking a diagnosis. Early intervention almost always means a simpler, cheaper repair.

Testimonials

What Our Customers Say

Discover why drivers up and down the country recommend Gearbox Gurus for gearbox repairs and reconditioning.

J

Jack Wall

A year ago

Very happy with the service I received. Gearbox Gurus had the car delivered back to me in 8 days. Payment after completion as well. A1 service very pleased.

K

Kayla Wright

A year ago

I was recommended them by a friend, they didn't disappoint. My car was fixed and back on my drive within in days. Thank you so much!!

C

Charlotte

A year ago

We had a brilliant service from start to finish. Excellent customer service and communication. Ross was very professional and kept us up to date through the service - the car was delivered back like new. We would highly recommend them.

L

Leon

5 months ago

Great service. Gearbox was a mess. Car was picked up promptly, great communication of the problems and solutions and the whole thing was sorted in 3 days. Car delivered back and drives better than new.

Y

Yus Uf

2 weeks ago

Had a really great experience with these guys. Ross's technical knowledge shines through. It turns out the problem was coming from the ABS module and not the gearbox. They wouldn't accept any payment. Honest mechanics would use again.

W

Waqar Ali Khan

2 months ago

Really nice and professional. I talked to Josh. He had the patience to listen to me and fix my problem. I'll highly recommend them.

HELP

Get a Quote

Contact us today to get a quote and schedule your repairs or learn more about how we can assist you. Trust us to deliver expert care and a long-term solution you can count on.

Got gearbox questions?

Speak directly with one of our specialists today. Whether you're after expert advice, a personalised quote, or ready to book your repair, our team is here to guide you every step of the way — with clarity, confidence, and peace of mind.

Call our team:

020 4584 3589

Send us an email:

info@gearboxgurus.co.uk

Free, No-Obligation

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