A few of my main problems with modern cars.
Faux performance parts. You know the stuff, carbon fibre effect/over plastic panels, flat bottomed wheels with using slippery plastics, fake vents, diffusers etc.
Apart from that, I generally like modern cars, apart from the Bangle era BMW 1, 3 and 5 series (6 I like. Even with an odd boot...), some sports cars (Ferrari F12, functional or not, for example) and all these damned "retro" car designs. Stuff like the vapourware E-type reboot, or the David Brown redo of the DB5. Even the Lamborghini Miura concept from a while back. Yes, old cars are beautiful but no, we can't go back to those times of design. Stuff like the old Copen I can deal with because its just fun to look at. Not trying to be something from the 60s but what someone from the 60s would design if he went through a wormhole and came out in the 2000s.