Found T4 diagnostics garage that is not on usual list by Ed3



Ed3
In case it is of use I saw a post that was placed years ago on a classic car forum that said the Three Arches Garage in Cardiff had T4 (Testbook version 4.Computer Diagnostic System) diagnostics. I rang the Three Arches and the lady said that they still have the T4 equipment but it has not been switched on for a long time so they will need to switch it on. They charge £60 all in and need 2 weeks notice.
https://www.threearchesservices.co.uk/

Posted 24 Apr 2026, 23:06 #1 

User avatar
takestock
Nice to know, thankyou
Welcome to all who have managed to migrate ;)

Dave....

Posted 28 Apr 2026, 16:15 #2 

User avatar
Duncan
Always good to know. But what is 'the usual list'?
Image

Posted 28 Apr 2026, 18:26 #3 


Ed3
Regards the usual list - On various Rover or MG forums there are maps like this one.
https://rover200.org.uk/forums/topic?p=86276

https://www.google.com/maps/d/viewer?mi ... 083303&z=6

Posted 29 Apr 2026, 16:17 #4 

User avatar
Duncan
Ah, OK but wasn't aware of that. TBF though it looks quite out of date. And being 'the OC' would never have been inclusive.
Image

Posted 29 Apr 2026, 17:01 #5 


Top