Ive had my ST now for 4 months.

The warranty i had ran out on the 19th of January this year, and soon after, problems began.

The engine is quite tappy, and has been since ive owned it, is this an ST170 ' thing ' ? Its more of a tick tick tick tick than a tap really?

The speedo has packed up, everything else works, the mileage just reads - - - - and the engine management light is on.

It is really notchy and noisy going into gear, and when you rag it, sometimes the clutch pedal stays down after changing gear then pings back up with an unsatisfying clunk? Its only done this a couple of times though, but isn't good

There is also a rattling/tapping sound coming from the exhaust i think, engine bay or underneath drivers area?

Also when are these cars to be serviced? Last time the speedo worked, she had just sailed over 38,000 miles ?

I took the airfilter out the other day and it was grubby.. ? Im thinking service time?

When should the cambelt be done?
Thanks