I'm buying an 06TDCI Ghia Focus Cmax107 bhp from Evans Halshaw - well looked after with full dealer service history. The car hasdone 62000 milesand I'vegot the option of a two year extended warranty for £405. Does the Cmax have any notorious faults which are worth covering. As in is something major very likely to go wrong on a Cmax aged between 5 and 7 years old? I've been led to believe there are no real key areas of the Cmax that have proven a mechnical weakness with this car. Is this over optimistic?