CHYE engine faults.

The 1.0 MPI has a timing belt, not a chain. The factory interval is based on time: five years, and shorter on short urban trips. On a low mileage, ten year old car the mileage is not enough. This model is typically a city car, so the time runs out first. If the belt snaps, the engine is badly damaged.

In the EA211 the water pump and the thermostat are one plastic module, and the pump is driven not by the timing belt but by a separate toothed belt behind the exhaust camshaft. There are usually two problems with it: the plastic housing warps or cracks (slow coolant loss, a sweet smell, rising temperature), or the drive belt ages (a chirping noise, then an engine left with no cooling). The housing is particularly sensitive if oil reaches it: for example from a leaking crankcase ventilation. The module has to be replaced whole: dismantling it warps it in itself.

On the 1.0 MPI the reports mention starting problems as early as around 20,000 km: the car starts with difficulty, jerks, and runs badly. Behind it is typically a faulty ignition coil or the fuel system.

The per cylinder ignition coil of these direct injection, turbocharged petrol engines fails. According to the Haynes service material this and similar simple electrical faults account for roughly eighty per cent of workshop visits.