About us
We're STA Aylesbury – friendly transmission specialists with over five decades of real workshop experience. We diagnose, repair, rebuild and tune automatic gearboxes (and the vehicles around them) for daily drivers, performance builds and everything in between.
Combined specialist transmission experience.
Gearboxes repaired, rebuilt or tuned.
Dedicated workshop with modern tooling.
Warranty on rebuilds (terms apply).
Our commitment
We operate on clear principles so every customer gets the same consistent, honest and high‑quality service.
Honesty & transparency
Straight answers, clear pricing and plain language. No upsell, no surprises.
Precision workmanship
Measured tolerances, correct fluids and torque specs. Do it once, do it right.
Customer‑first
We prioritise safety, reliability and total cost of ownership over quick fixes.
Data‑driven decisions
Live data, adaptation values and hydraulic readings inform every repair plan.
Consistency
Documented processes ensure the same standard from inspection to hand‑back.
Sustainability
Reuse serviceable parts where safe to reduce waste and cost without compromising reliability.
Stories from the workshop
Back on the road for a big trip
A family came in days before a long‑planned holiday with a DSG in limp mode. We confirmed a mechatronic position sensor fault, fitted and coded a replacement, performed adaptations and road validated the car the same day. They made the trip – stress‑free.
Saving a customer from a needless rebuild
Another garage advised a full rebuild for harsh shifts. Our diagnostic showed adaptation drift and fluid breakdown, not internal clutch failure. A controlled exchange, seals and relearn restored shift quality at a fraction of the cost.
What we specialise in
Targeted skill, correct data and disciplined processes reduce cost and deliver long term shift quality. Below are core areas owners come to us for.
DSG & dual clutch
Clutch adaptation, mechatronic replacement, limp / emergency mode recovery (incl. VAG P1735 / P1736 position sensor faults).
ZF & Aisin units
Seal & sleeve leaks, torque converter judder, valve body wear, controlled fluid exchanges and full rebuilds.
Mechatronic coding
Supply, code, software level verification, clutch & shift adaptations, dynamic drive validation.
Performance builds
Strengthening, upgraded friction components, shift strategy refinement and DSG tuning for reliable power.
Preventative servicing
Gearbox fluid exchanges, adaptation review, leak correction and now full vehicle servicing & mechanical repairs.
Advanced diagnostics
Live data analysis, freeze frame capture, hydraulic value interpretation, avoiding unnecessary part spend.
Certifications & partnerships
We work with trusted brands and calibrated tools. Credibility you can see.
- Hydra‑Test certified hydraulic testing for valve bodies
- OE or OE‑quality parts used as standard
- Software coding, adaptations and road validation included where applicable
- All our tools are official Snap On
Proven process
- 1
Assess
Symptoms, codes, live values.
- 2
Plan
Transparent quote & priority list.
- 3
Repair / Rebuild
Targeted component work.
- 4
Validate
Adapt, road test, sign off.
Quality & assurance
Warranty you can rely on
Rebuilds backed by 12 month / 12,000 mile warranty (whichever first). Thorough cleaning, measured tolerances and controlled assembly reduce comebacks.
Trusted component sources
OE or OE‑quality brands (ZF, Sachs, TRW, Lemförder etc.) plus calibrated test equipment (incl. Hydra‑Test) to verify hydraulic performance.
Transparent & data driven
We show evidence not opinions: adaptation before/after values, wear indicators, replaced parts and validation results.
Sustainable mindset
We reuse serviceable components where safe, minimising waste and total cost without compromising reliability.
Proudly serving local drivers
From commuters to families and enthusiasts, we support Aylesbury and surrounding areas with rapid, reliable repairs and honest advice. Thousands of owners have trusted us to keep their cars driving right.
- Friendly and knowledageable technicians
- Same‑day diagnostics where possible
- Fast turnaround and clear communication
- Fair pricing focused on long‑term reliability
Need help with a gearbox or vehicle fault?
Call us now to speak with an experienced technician. Early intervention often prevents a full rebuild.