As someone who has owned a couple of Volkswagens, I've always found it strange that they don't exactly have a chassis code system. Or, I guess I'll say it this way, they generally don't refer to them by chassis code, and instead by generation.
Still...
'93 Volkswagen Fox (G1)
'96 Volkswagen Jetta (MKIII / A3)
'98 Toyota Celica (ST204)
Otherwise, it seems like most of the other family cars come in pairs...
'68 Chevrolet Camaro (GM F-Body)
'91 Pontiac Firebird (GM F-Body)
'98 Pontiac Grand Prix (GM W-Body)
'07 Chevrolet Impala (GM W-Body)
'09 Chevrolet Avalanche (GM GMT900)
'10 GMC Yukon (GM GMT900)
'03 Volkswagen Golf Cabrio (MKIII A3)