My Mondeo is up to 135,000 miles (about 217,000km) and apart from normal wear and tear repairs is still going OK. The exhaust problem was faulty replacements and recently there have been a couple of wheel bearings replaced. Been through a few tyres recently because of punctures that couldn't be repaired.
No plans to replace it just yet but have no real idea as to what I would choose. Never really desired a BMW or Mercedes (unless it was an M3/5 or an AMG) though the 3 series convertible I tried was rather nice.
More practical considerations would be a bigger factor in choosing the next car. A small SUV like the Ford EcoSport would be a more practical compromise between ease of use, space and running costs. As much as I would like to have something exotic and sporty you have to assume that fuel costs won't be dropping in the future. There are also few opportunities to enjoy driving nowadays. Speed cameras in the UK seem to be there purely as a revenue source rather than any safety aspect. So the Lamborghini is unlikely unless some £s come my way.
Used cars are better value than a brand new one but getting the spec that you want is difficult. Going for a new one is nice but adding a few extras can easily add £10,000 to the price of something like a Focus.
If I went looking for a new car today I have no idea what I would go for. Quite a few cars I like the look of but there are others I definitely know would be practical. Others would make more sense financially. The only ones I really want are all £50k+!!!!
Hope you both enjoy your new cars.