There's plenty of choice so there's no need to buy a high-mileage car in less than good condition. Diesels will be in highest demand, with prices reflecting this. All will have air conditioning, electric windows and a CD/radio, but look out for any other attractive extras that might have been fitted, such as heated seats, satellite navigation or Sony audio systems.
Be aware that in the earliest colour satellite navigation systems in the Mondeo the navigation CD shared a slot with the CD player, so a six-CD autochanger would be a desirable addition on those cars.
The best cars with full service histories, upmarket interiors, scratch-free exteriors and dentless bodywork will sell quickest. TDCi diesels will also be desirable on the used market.