I agree that they are no more reliable than a Passat but a Skoda Octavia would be the same, they are all the same family of cars.
I am a big fan of Ford in general and love the new Mondeo. While it is a much better drive than a Passat (or Octavia) I wouldn't rate the old Mondeo as being nearly as good as the A4. The new one may well be as good or better but I only drove it once.
I don't rate Volvo at all, I agree with Mad_Lad on that; just over priced Fords, nicer seats and not as good to drive for a load more money.
That said if comfort is your thing then Volvo all the way. If driving pleasure is your thing then BMW. If all-round good performance and an engaging drive with loads of room, extras and safety is your thing then buy a new Mondeo.
Personally I like the drive I get in my A4. I also like the soft top with four seats but I’m sure there are nicer cars out there and don’t consider them to be particularly good value for money