While these are mostly correct, there are a few mistakes.

A3 Golf/Jettas are 93 - 99.5 (November 99)
A4 Golf/Jettas are 99.5 to present (December 99 -)
B4 Passats are up to 97
B5 Passats are from 98
I am not an expert on the early Passat body styles, however

Corrados were the successors to the Scirocco, I don't think they used
codes.
Quantums are only listed in ETKA up to 88

JordanVw@AOL.COM wrote:
>
> Vw started giving a alpha numerical definition to their chassis's in 75'.
> They are as follows :
>
> A1 = 75 to 84' Rabbit / Jetta / Scirocco(up to 87')
> A2 = 85 to 92' Golf / Jetta
> A3 = 93 to 98'   "  /  "
> A4 = 98 to present  Golf / Jetta
> B1 = 82(??) to 87 Quantum
> B2 = 88 to 89 Quantum
> B3 = 90 to 93' Passat GL,Syngro,VR6
> B4 = 94 to 98' Passat GL ,GLS,GLX,TDi
> B5 = 99 to present Passat VR6,1.8T,TDi
> ?? = Corrado
> T= Transporter