Sedans:
Ford Mondeo
BMW 5-Series
Audi A6(or RS6, S6)
Skoda Octavia
Volkswagen Passat CC
Station wagons:
Ford Mondeo
BMW 5-Series
Audi A6(or RS6, S6)
Skoda Octavia
Volvo V70
SUV/Crossovers:
Audi Q5
BMW X3
Audi Q7
Ford Kuga
BMW X5
Range Rover (or Land Rover? :S) Sport Supercharged
Trucks:
Ford F-Series
Nissan Nivara
(I don't know much about trucks! :P)
Sportcars:
Farrari California
Aston Martin DB9
Audi R8
BMW M5/M3
Audi RS6
Audi S4 (RS4?)
Audi S3
BMW 335i (station wagon)
(And many more)
Night
Turn indicators
Winshield Wipers (with the liquid that cleans the screen.. I don't know what it's called in English)
Working Sunroof
Damage
Better AI's (Cops chasing you if you're going over the speedlimit etc.)
Exterior addons (rims, paint, spoilers etc.)
Better roads (smoother)
Accurate speedometers (cockpit view)
Passenger mode (switch seat.. That would've been awesome! :D)
Get out of the car (To change a tire, open the hood or trunk etc.)
OH, and the AI's that wanna race you when you're doing a free roam are annoying as HELL! :@ Always rear-ending me at stop signs etc. Those needs to be fixed!!!!!!
+1 rep if you agree! :)