RTEC Garage
German-car specialist offering servicing, repairs and diagnostics. Its public website identifies Volkswagen, Porsche, Audi, BMW and Mercedes as makes it specialises in, and discusses servicing performance vehicles.
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Lewis Motors in Cardiff publishes Audi servicing information that explicitly lists RS3, RS4, RS5, RS6, RS7, RSQ3 and TTRS models. Other German-car and performance workshops may be relevant for selected jobs; confirm exact RS model support directly.
Potentially relevant providers
The businesses below describe relevant makes or services in their public information. Contact them directly to confirm the exact vehicle and job.
German-car specialist offering servicing, repairs and diagnostics. Its public website identifies Volkswagen, Porsche, Audi, BMW and Mercedes as makes it specialises in, and discusses servicing performance vehicles.
Cardiff vehicle-protection specialist offering wrapping, paint protection film and window tinting. Its website showcases projects involving cars including a Lamborghini Urus, BMW M240i, Audi R8 and Bentley.
North Wales workshop offering ECU remapping, vehicle diagnostics, servicing, repairs and DPF cleaning. Its website describes a performance-focused approach to vehicle care.
Mobile tuning provider based in Corwen, advertising performance and economy remapping for a wide range of makes and models across North Wales and nearby areas.
Cardiff independent garage offering Audi servicing; its public model list explicitly includes several Audi RS and TTRS variants. Confirm the exact year, engine and requested work.

Specialist service
Specialist maintenance, diagnostics and repairs
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Specialist service
Calibration, rolling-road testing and performance upgrades
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Specialist service
Colour-change wraps and paint protection film
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