So this is a dumb question but here it goes. The Audi TT has All Wheel Drive (AWD) is that the same as Four wheel drive? Is there a technicality that actually separates these 2 or are they exactly the same just called something different. Personally I'd like to state I think they are the same thing, but i'm sure someone with more experience might know if there is actually a slight difference in the way they work or something.

 

The TT Quattro is AWD, the stock Haldex controller sends 80% torque to front, 20% to rear wheels when slip is sensed. An A4 Quattro is a "more true" AWD system with more or less equal torque to front and rear. Not the same as 4WD which are generally rear wheel drive with a transfer case that sends power to the front.

 

I call it Quattro neither AWD or 4 wheel drive, its "Quattro"

 

Main points are:
4wd is usually a driver selectable mode. (Old jeeps are RWD or 4wd selectable by a lever in the cabin)

Awd not selectable, but the car senses when to transfer power to the other wheels.

More info Here: http://auto.howstuffworks.com/four-wheel-drive.htm

 

And for the record not all TT's were created equal. Quattro AWD is not on all TT's.

 

switchable is the question if its permanent 4x4 then you have no control and the system does the work, switchable means you can turn it off and not for the newer cars unfortunately

 

What would the new STI be considered since you can just turn a **** and switch power from front to back?

 

AWD, Power bias doesn't determine the system.

 

BTW, I still Wish I was RWD...

 

that's called variable and switchable and not the same as permanent 4x4