I had an S-reg gt tdi, and it was badged as that, but htne my friend has a T-reg one and his is just tdi on the back but the log book has gt tdi
Anyway mine had done 126k and was still going strong, but think the engine has a fault as my friends does the same thing, it kinda chugs when you roll up to a junction and clears it's self as soon as you touch the brakes

, annoyed the hell outa me
Here's mine before i sold it
miss it now