I’ve got a 54 plate 2.0 TDCi 130 bhp, bought it 2-3 years ago with 38k miles, now 75k miles and nothing has gone wrong with it, other than air con recharge, new exhaust section etc.
Mondeo’s are known for rear suspension bushings wearing out quickly. Mine havent had to be done yet, but my Father in Law paid £150 for it to be sorted.
The 2.0 TDCi is chain driven too so saves on expensive serivce costs.
Drives really well, no rattles, lots of toys, 50mpg at 85mph. Cheap to buy second hand. 1.8 petrol is a bit gutless for the size of the car.
Worst thing I can think about it is under hard acceleration every Mondeo diesel I have ever seen leaves quite a smoke screen behind.