• 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.

Services

ABS Repairs

ABS Repairs

Anti-Lock Breaking System (ABS) can be a costly repair to your car

A1 Diagnostics & ECU Repairs repair ABS Control Units and Pumps. We are ABS specialists in Cardiff and we can fault find and test faulty Anti-Lock Breaking Systems (ABS).

Contact A1 Diagnostics

Read More About ABS Repairs

Air Conditioning

Air Conditioning

Having the state of the art air conditioning unit, we offer Air Conditioning Servicing which includes:

  • Tracer pumped throughout the system to check for leaks
  • Freshener and antibacterial killer to remove and any bacterial from the system
  • Gas Refill

ALL FOR £99.00 INC VAT

Chargeable

  • Oil to re-seal and lubricate the pipes and pump

Contact A1 Diagnostics

Read More About Air Conditioning

ECU Repairs

With over 30 years’ experience in the motor trade, we have serviced cars and commercial vehicles with some of the very first engine control units (ECUs). In that time, we have become an industry leader and specialist in ECU testing and repairs, offering the highest standard of work backed by excellent customer service from our garage workshop pictured below.

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We have the latest state-of-the-art technology that allows us to test ECUs and identify persistent faults, as well as finding the intermittent faults you may not be aware of.

We are able to test and repair all engine control units, including:

• ABS ECUs

• Air bag ECUs

• Engine ECUs

• Dashboard ECUs

A fraction of the price of a new unit


ECU repairs at A1 Diagnostics are a fraction of the price of a new unit, and can help you make a big saving on the cost of going to the main dealer. We perform ECU testing and repairs on all major vehicle types, from family cars to vans and commercial vehicles.

We also hold a large number of ECU units and replacement parts in stock, and constantly update our range to meet our customers’ needs. That means in many cases, our ECU specialists can get you back on the road quickly without having to order parts in.

Book your car in with the ECU specialists


With years of experience, our professional technicians have the expertise to work on any ECU job, from small repairs to complete overhauls. Importantly, our pricing is completely transparent, so no hidden charges are added after the work is done. If we do identify any further faults when testing your ECU, you will be advised of the cost of the repair before we start the work.

Contact us to book your vehicle in with Cardiff’s best ECU repair specialists, please use the contact details below.

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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
Sat: 9:00am – 1:00pm

Electrical Fault Findings

Electrical Fault Findings

Electrical fault service is offered, having all dealer level diagnostic tools and diagrams to hand, we are confident to face any fault finding job

Engine Control Units – vehicles are fitted with electronic management control units (ECU) and a multitude of sensors and wiring located throughout the engine.

We have the latest diagnostic equipment and circuit wiring schematics to pin point your fault with a quick and accurate diagnosis.

Contact A1 Diagnostics

Read More About Electrical Fault Findings

Engines & Gearboxes

Engines & Gearboxes

We can provide engines and gearboxes for many makes of cars and vans, from our sister company Major Motor Services Ltd

We offer a full supply and fit service on low mileage imported engines, gearboxes and turbos with full 3, 6 or 12 month warranty on all parts.

WE ARE KNOWN AS WALES PREMIUM ENGINE AND GEARBOX STOCKISTS AND SPECIALISTS

Contact A1 Diagnostics

Read More About Engines & Gearboxes

Immobiliser Repairs

Immobiliser Repairs

A1 Diagnostics and ECU repairs can fix your immobiliser repair problems quickly

When it comes to immobiliser bypass modules & immobiliser repair; this includes key coding and re-programming / cloning of remote controls. 99% of our business is carried out by post and we do not have to see your vehicle.

Contact A1 Diagnostics

Read More About Immobiliser Repairs

MOT

MOT

A1 Diagnostics and ECU Repairs offer MOT packages for your family cars and light vehicles

We are a fully approved MOT Test Centre.

In addition to servicing & repairs we can also MOT your vehicle to approved VOSA standards.

Contact A1 Diagnostics

Read More About MOT services In Cardiff

*MOT RETEST FEES APPLY

Servicing

Servicing

Regular car servicing, according to manufacturer’s recommendations, prolongs the life of your vehicle or fleet, and helps you plan maintenance before it becomes a necessity

A1 DIAGNOSTICS OFFER:

  • Value for money
  • Quality workmanship
  • Free collection & delivery service
  • Air-conditioning service
  • Tyre and exhaust fitting centre
  • MOT

Contact A1 Diagnostics

Read More About Car Servicing