You are in a better position to judge than anyone on here, as you have seen the car and the place where it was serviced. You should have a look at its history on the Gov website for MoT results, which will give a flavour for its trustworthiness. A 15-year-old car doing 8K miles a year may well be in decent running order - or not. If you haven't taken it for a long run yet, double-check the fluid levels (which the servicing garage should have done) and the tyre pressures, and then keep an eye on the dashboard gauges in case the engine starts to overheat.

Is its cambelt recent, or not ? Or can't you tell ?

Hi all,

I have just bought a Ford Fiesta (2006 model) it has done approx 120k miles on the clock has passed its MOT and been serviced - will it make a a 350 mile round trip?

it has done approx 120k miles on the clock

After another mere 350 miles it will probably still have 120k, or possibly 121k miles on the clock

has passed its MOT and been serviced - will it make a a 350 mile round trip?

There is a small risk that being 'serviced' by a forgetful/cackhanded mechanic might have introduced a problem, e.g. spark plugs not tightened up, oil not been replaced, or some other thing which necessitates a return to the garage sort out a problem which did not exist beforehand.