4C, its so much sexier than the Cayman.
CRX or Civic(early 90s)
CRX… cuz the only other option is a Civic.
6 Speed Manual or 8 Speed Auto?
6 speeds is the perfect amount in a manual gearbox, so 6-speed manual.
Racing in wet weather or racing in dry weather?
Wet always, it’s more fun to watch and to drive. Its dangerous, but that’s still quite fun
Carburettor or Fuel injection?
Fuel injector because efficient
Mercedes-Benz C220d(W205) or BMW 320d (F30)?
That’s tough… I’ma go with the BMW 320d because it looks super… future-y.
Subaru Impreza STI (2015) or Ford Mustang (2015)?
[size=50]I’d personally go with the STI[/size]
Mustang because muscle car.
S600 or 760Li?
S-Class, if you want that sort of cars, you are looking for a luxurious experience and the S-Class is better than the BMW in that area.
Alfa Romeo or Maserati?
I hate those coupe-SUVs, they are just the pinnacle of useless-ness. Why buy a 2-tonne+ car that can only carry 4 people, not very comfortably, can’t do offroad, drive badly and have rubbish fuel economy. (Sorry for the rant 
)
I would buy a 6-series Gran Coupé or a 5-series Touring every time over these two, but if I was to choose only from them the Merc would be it.
SUV or Wagon? (X5 or 5-series Touring, for example)
Wagon… they can still handle great and be quite quick.
BMW M235 or CLA 45 AMG?
CLA 45 AMG, just because of the engine, 2.0L 4cyl with 360hp. Mental.
Light and agile FF car (e.g.: Ford Fiesta ST) or Heavy and faster FR (e.g.: 2005 Mustang GT)?
Depends on how I’d be driving it, but I’d probably take the Fiesta ST.
Lexus or Acura?
Lexus, more fancyness
Fiat Punto or Fiat Bravo?
If we’re talking about the new ones then bravo. It’s really good looking and the wheel arches are muscular, especially the sport version. (not the abarth)
BMW i3 or Opel Ampera (also chevrolet volt)
BMW i3
Death, or being forced to own a BMW i3?
i3, I’ve heard bad things about death’s ride comfort.
SRX or CTS Wagon?
CTS Wagon, I really don’t like crossovers
BMW M4 or Audi RS5?
M4 because the audi looks too boring.
Ford Model T or Cadillac Model H?
Model H because 3-speed transmission in 1906.
Corvette Z06 with Z07 performance pack or GT-R Nismo?