I'm gonna have to go with Mercedes and germany on this one.
The whole of the car is perfectly made and the Mercedes accessories are always fun too!!

Either Nissan or Subaru. Subaru has the engines, Nissan has the line-up variety.

nissan, toyota, mazda, dodge. nissan have skylines which i love. toyota have supra. mazda rx-7 make great drift cars and run rotarys. and i want a 69 dodge charger R/T

I mostly like Nissan Cause They have Good perfomance and also Sporty Look

I like CRV from Honda

Honda make some of the best cars on the road but are very understated in the performance world.

Nissan, look at the line up
Skylines
Silvias
Pulsars (SSS)
350Z
370Z
180SX
200SX
300ZX

Just gets better and better, they have performance and looks!
Other than that Subies with the Impreza's and liberty and foresters.

nissan do have a fantastic line up of cars but the only problem is they're a dime a dozen. i don't think i can go a whole day without seeing a modded skyline/silvia/180/300zx. theres just too many of them.
if you want a nissan it would have to be something less common like a pulsar SSS or (if you have the cash) a 350Z or an r34 GTR

i will go for Nissan,skyline and Honda..as these companies already produces some of the best cars which still rules...Honda CRV..Pulsar SSS...but in the end it depends what you need for have...

Yeah I'd have to say either Nissan or Toyota but like MrMcGinty says there are just to many of them on the roads.