• Independent German Car Specialists

    Independent German Car Specialists

    Welcome to A1 Diagnostics. We are a BOSCH vehicle service garage based in the heart of Cardiff offering professional vehicle servicing from our garage workshop.
  • MOT Service Cardiff

    MOT Service Cardiff

    A1 Diagnostics provide MOTs In Cardiff to the Public and Private Sectors. With our highly qualified MOT team your car is in safe hands
  • About A1 Diagnostsics

    About A1 Diagnostsics

    Read more about the services we offer here at A1 Diagnostics.
  • We service all brands of vehicles

    We service all brands of vehicles

    We specialise and service all makes of vehicles especially German manufactured vehicles.
  • Professional Mechanics

    Professional Mechanics

    Our mechanics are trained on the latest technologies and have the most up-to-date diagnostic equipment to pinpoint any faults. Our mechanics work together as a team and have years of combined experience in the motor trade.
  • Car Servicing Cardiff

    Car Servicing Cardiff

    Get your car serviced efficiently and quickly at A1 Diagnostics in Cardiff
  • ABS Repairs Cardiff

    ABS Repairs Cardiff

    Anti-Lock Breaking System (ABS) can also be a costly repair to your car in Cardiff
  • Air Conditioning Servicing Cardiff

    Air Conditioning Servicing Cardiff

    Having the state of the art air conditioning unit means looking after it and having it checked once a year
  • ECU Repairs Cardiff

    ECU Repairs Cardiff

    ECU Repairs Cardiff are able to rebuild, test and remanufacture ECU units on our test bench in Cardiff
  • Electrical fault service Cardiff

    Electrical fault service Cardiff

    Electrical fault service Cardiff can help diagnose your electrical fault problems in Cardiff
  • Engines and Gearboxes Cardiff

    Engines and Gearboxes Cardiff

    We can repair, rebuild and offer many engine and gearbox services from our Cardiff based vehicle service garage. Contact us for any advice needed we are happy to help.
  • Immobiliser Repairs Cardiff

    Immobiliser Repairs Cardiff

    A1 Diagnostics and ECU repairs can fix your immobiliser repair problems quickly
  • Key Coding Cardiff

    Key Coding Cardiff

    Key Coding Cardiff can be done at A1 Diagnostics Cardiff
  • Car Recovery Cardiff

    Car Recovery Cardiff

    Broken down in the Cardiff, South Wales area? Choose Car Recovery Cardiff at A1Diagnostics
  • We have a state of the art vehicle electronics bay

    We have a state of the art vehicle electronics bay

    We have our own electronics bay to diagnose electronic related vehicle problems. From electrical engine faults to ECU repairs we have all the equipment needed to repair electrical faults in your vehicle.
  • Cosmetics vehicle service

    Cosmetics vehicle service

    If you have scrapes and scratches in the interior we can repair them for you leaving your vehicle looking as good as new.
  • We are experts in gearbox rebuilds and repairs

    We are experts in gearbox rebuilds and repairs

    We have extensive experience in gearbox rebuilds, reconditioning and repairs at competitive prices.
  • We are experts in engine rebuilding and repairs

    We are experts in engine rebuilding and repairs

    We rebuild and repair hundreds of engines every year. Contact us if you have any engine issues we can help.
  • MOT vehicle testing

    MOT vehicle testing

    We have two MOT test lanes and offer affordable MOT servicing. Contact us if you have any queries.
  • Brake servicing at affordable prices

    Brake servicing at affordable prices

    We service brakes of many vehicle brands and types. Contact us for any advice on brake problems you may be having.
  • We do breakdown recovery

    We do breakdown recovery

    If you do not have breakdown cover don't worry we can pick your vehicle up repair it and return it to you. Contact us for any advice needed.
  • Air conditioning vehicle servicing

    Air conditioning vehicle servicing

    We can help you stay cool and ensure your vehicles air conditioning is working perfectly. Contact us for any advice needed.

We can supply, fit, recondition and repair your Renault engine

We are an independent garage specialising in Renault engine repairs, reconditioning, fittings and supply


In the title above we have mentioned four main Renault engine services we carry out from our garage workshop shown below here in Cardiff.

Our Renault engine repair and reconditioning garage

Each service is highlighted below giving you a little bit more information.

We are experts in Renault engine fittings – Service 1


If you own a Renault vehicle or Renault car and are experiencing problems with your Renault engine we can either repair and fit the existing engine or replace it with a new low mileage Renault engine.

Our Renault engine mechanics fitting a recent engine

Our engine mechanics checking over a recently fitted Renault engine

We have access to huge ranges of Renault engine stock. If your Renault engine is beyond repair we can fit your Renault vehicle with a quality low mileage Renault engine from stock.

Because we have good access to Renault engine stock we don’t have to wait long delivery times waiting for Renault engines to be delivered. We want you back out on the road as quickly as possible instead of having to wait 3 to 4 weeks for stock to arrive. We can pull Renault engines straight from stock getting you serviced quickly.

We can repair or recondition Renault engines from our garage – Service 2


If you are an independent garage and are experiencing problems with a particular Renault engine we can help. We have years of experience repairing Renault engines and have serviced hundreds. Get the Renault engine to us and we will repair it and deliver it back to you in no time.

Here is a photo of our mechanics working on repairing and reconditioning a recent engine from our garage workshop.

Our Renault mechanics working on an engine at the garage workshop

If you are having any kind of problems with your Renault engine then get in touch with us we can help and have mechanics with years of Renault knowledge to help repair your Renault engine.

We can supply you with low mileage Renault engines – Service 3


We have access to large amounts of Renault engine stock. Because we are able to source Renault engines from wholesale suppliers far and wide and buy direct enables us to offer price advantages to our customers.

Check out the Renault engine stock we have access to shown in the photo below. Having access to big stock levels enables us to deliver quickly to our customers.

Renault engine stock

Here are photos of four Renault engines leaving our workshop delivered within 4 working days of the enquiry being made.

Renault engines ready to be delivered

Contact A1 Diagnostics

Get in touch today for expert advice on Renault engine fittings, repairs or supply we are happy to help.

Our Renault engine garage where service hundreds of Renault engines 

A1-Diagnostics and ECU Repairs
 64 Sloper Road
Leckwith,
Cardiff
CF11 8AB

Tel: (029 20) 220380
Fax: (029 20) 223172

Opening Times

Mon – Fri: 9:00am – 6:00pm

Email: info@a1-diagnsotics.com