a4

A fourth generation VW/Audi chassis that makes the basis for the 1999-2005 Jetta, Golf, and Beetle; also, makes the basis for the Audi TT and first generation Audi A3/S3. A4 is the chassis code for the fourth generation of the "A" type of VWAG's cars. Usually used among VW fans to differentiate different generations of the Golf and Jetta. A4's were thought of as pretty cool to the masses, but VW fanboys who can't afford them decry them for being too heavy, even though they were faster than previous generation VW's. This can be really confusing; the Audi A4 is built on a B5 chassis (the same as the 1998-2005 Passat). Also referred to as a Mk4.