OFFERS NOW ON

MOBILE VAN AND CAR DIAGNOSTICS

We come to your home or work place across Swansea and surrounding areas 735 + jobs completed 290 5 star reviews Click Mechanic approved CALL/WHATSAPP

Popular services Diagnostics from £65

Engine carbon cleaning from £99

Pre Purchase Inspections from £99

DPF regens from £125 Servicing from £99

Why choose us?

Mobile service

Experienced Technician Dealer Level Equipment HUNDREDS of completed jobs HUNDREDS of 5 star reviews Marc

29th August 2026
Volkswagen Polo Diagnostic Inspection

Overall *****

Quality *****

Punctuality *****

Communication *****

Mark was dead on time and very quick to provide a diagnosis. Great service

Anthony
27th August 2026
Toyota RAV4 Plug-in Diagnostic Inspection

Overall *****

Quality *****

Punctuality *****

Communication *****

Mark was great, no messing around , he diagnosed the problem and sorted ot straight away.

Amy
19th August 2026
Vauxhall Mokka Diagnostic

Thanks to Mark. Found what the problem was, advised to take it to dealership to sort the problem. 👍

Overall *****

Quality *****

Punctuality *****

Communication *****

Dennis
9th August 2026
Nissan Micra Interim service

Overall *****

Quality *****

Punctuality *****

Communication *****

Very happy with the work Mark did. He was efficient and kept everything clean

Bridie
5th August 2026
Citroen C3 Picasso Diagnostic Inspection

Overall *****

Quality *****

Punctuality *****

Communication *****

He was very pleasant. And very informative. Was here on time, looked at the issue and explained what needed fixing and sent pictures for me to view

John
29th July 2026
Volkswagen Tiguan Diagnostic Inspection

Overall *****

Quality *****

Punctuality *****

Communication *****

Mark was great could not fault. Great service. Would recommend very knowledgeable and efficient

David
24th July 2026
Vauxhall Insignia Grand Sport Premium Pre-purchase Inspection

Overall *****

Quality *****

Punctuality *****

Communication *****

Mark was brilliant. Carried out a pre purchase inspection for me. Called me as soon as he found issues with the vehicle. Very detailed report and clear detailed pictures. Would highly reconsider

Sarah
18th July 2026
Ford Ka+ Car Won't Start Inspection

Overall *****

Quality *****

Punctuality *****

Communication *****

Brilliant work, diagnosed and fixed the problem. Would highly recommend.

We are sister company’s to

www.on-line-help.co.uk

www.enginecarboncleanswansea.co.uk

I Am a Click Mechanic approved mechanic with over 730 completed jobs on Click Mechanic website with over 285 5 star reviews over 430 Pre Purchase Inspections completed see click mechanic to book me.

https://www.clickmechanic.com/mechanics/3538/www-on-line-help-co-uk

A 50% deposit secures your appointment, As appointments slots are reserved specifically for each customer, booking deposits are non refundable

Other Services

We also offer Pre Purchase Inspections, if your thinking of buying a car or van and want it checked over first we offer 3 different inspections, a basic, standard and Premium inspection, Adblue resets and fault finding, Servicing, Brakes, Batterys, Carbon Cleaning, DPF regens,Lanogaurd underbody treatment etc etc

Engine Carbon Cleaning Experts

SwanseaDiagnostics is a leading provider of engine carbon cleaning and diagnostics in the Swansea area. Our team of experts is dedicated to providing top-quality services to the automotive industry, helping to improve engine performance and reduce carbon emissions. Trust us for accurate and efficient diagnostics to keep your vehicles running at their best.