hi can anyone tell me when i need to take the car for a service,its mk2.5, is it every 12,000 miles? And how much cost if I take it to Fiat

12k or 12 months will be fine, you dont have to take it to fiat as they wont be cheap, you could do some of it yourself and keep the cost down but that all depends on if you know what you are doing.

it should say in your handbook when a service is due and what is involved at that mileage/age.

I would do a petrol model every 9k, diesel maybe 12k.

if you drive in the city (stop start), think about 6k petrol, and 9k diesel