Volkswagen B platform

The Volkswagen Group B platform is a mid-size automobile platform from the Volkswagen Group. It has been used for saloon cars/sedans, estate cars/station wagon, and coupés - under the Volkswagen Passenger Cars, Audi, Porsche, SEAT and Škoda marques over the years. More recently, Volkswagen Group have introduced a new alphanumeric nomenclature for car platforms. The platform code is composed as follows:

An additional + suffix indicates a long-wheelbase variant.

1974-1988. An Audi derived platform, the first Volkswagen Passat was nearly identical to the Audi 80 (Audi Fox in US), sharing much of its mechanical systems, including its longitudinal engine placement.

1980-1996. The BX platform, developed by Volkswagen's Brazilian subsidiary (Volkswagen do Brasil), again borrowed heavily from the Audi 80 (Fox/4000) of the day. The BX platform was used for the Brazilian Volkswagen Gol, Voyage (Gacel or Senda - In Argentina, and Fox in the U.S.), Parati (Amazon in U.S.), Saveiro (pickup) and Furgão (van) models. The Gol/Fox was quite unique in that it started life with a four-cylinder Volkswagen air-cooled engine (borrowed from the Volkswagen Beetle), and eventually ended up with a more modern water-cooled engine, being sold in the US for the first time as a 1987 model. The VW BX family was restyled in 1987 and 1991.

Still an Audi derived platform, this time based on the Audi 80/4000, again, including its longitudinal engine placement and, on some European models, the quattro four-wheel drive system, rebranded Syncro for Volkswagen cars. The Santana (facelifted) was produced until 2012 in China.

...
Wikipedia