I am finding the comments regarding low mileage and lack of servicing very apt at the minute.
I am looking for a low mileage (I know!) Fiesta for my daughter. The Fiestas have the 1 litre ecoboost which have a 'wet cambelt'. According to everybody, it is imperative that the oil is changed regularly to prevent the belt disintegrating and bits clogging up the oil pump and lunching the engine. Oil in good condition is the key to preventing problems, apparently.
I cannot find a single Fiesta that has had Ford's schedule of servicing, purely down to low miles and the 'it's only done a few thousand in the last 2 years so why pay to have a service?' attitude.
This is probably a direct result of main dealers (and most garages) charging so much for a simple oil and filter change.
I had a Focus with the 125bhp 1.0 "ecoboom" engine. Bought it at 25k miles and had it until about 85k miles, sold it to my ex when we separated. It's now on about 100k miles, and I don't think she's had the belt done yet.
I definitely missed at least a couple of services and never had any problems from the engine. I'm not sure £1k to replace a belt every 100k miles is really the end of the world anyway, is it? Just stick a tenner in a savings pot every time you do 1,000 miles. My Skoda belt needs doing every 60k miles and is about £500, and most BMW's will need a water pump and cam cover gasket before 100k miles and that will add up to closer to £2k...
I know other people with the same engine in Fiestas and... no problems there either.