Hi everyone - i have recently updated my MK1 to a MK2.5 and wondered if anyone knows the service intervals? I have very little history with the car - just MOT no service book or manual 
Hope you can help…
G’day mate, Welcome to the Forum
Some info here http://mx5oc.co.uk/forum/files/folders/service_sheets/default.aspx
It’s filed under downloads at the top of the forum---------------------
9000 miles or 12 months (whichever is sooner)
Cambelt gets done at 54000 miles (and arguably 6 years - it depends who you talk to)
The book only says 54000 miles, but a few places say six years, but more so, the main dealer I bought the car from took the car back off me after I had taken it off their hands a week prior, because “the cambelt was missed in the prep”, and did it FOC for me - so they must think it is needed.
But- To add to the story, I was pressuring them to tell me what the advisory on the MOT was, and they could not tell me, so it might have been a bit of a bribe to shut me up, but since they could find out so easily I doubt it (Dealer was Arnold Clark & the MOT station was the Arnold Clark literally next door). (I’ve since found out online it was “slight juddering” of the two off side brakes - and I was told it had new brakes fitted by the salesman, and more importantly, I have never noticed an issue!)