Volkswagen Group 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, 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.

B1

19741988. An Audi derived platform, the first Volkswagen Passat was nearly identical to the Audi 80, sharing much of its mechanical systems, including its longitudinal engine placement.
19801996. The BX platform, developed by Volkswagen's Brazilian subsidiary, again borrowed heavily from the Audi 80 of the day. The BX platform was used for the Brazilian Volkswagen Gol, Voyage, Parati, Saveiro and Furgão models. The BX platform was quite unique in that it started life with a four-cylinder Volkswagen air-cooled engine, 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.

B2

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 was produced until 2012 in China.
The B3 Volkswagen Passat was the first B platform car to be called Passat in the United States. The B3 was also the first Passat with an independently designed platform: it did not share parts with Audi models. Instead, the design borrowed heavily from the Volkswagen Group A2 platform, being essentially a stretched version of it, and sharing the same transverse engine layout.
The Volkswagen Corrado was an A2 platform car, but it borrowed heavily from the B3 Passat platform for ancillary components.
The "B3" designation is also used to refer to the "Typ 89" version of the Audi 80/90 produced from 1987 to 1992 and the "Typ 8B" Audi Coupé and S2. However these are not based on the same platform as the B3 Passat, being longitudinally engined cars, and that platform should be considered the "true" B3, being the B-class platform historically longitudinally engined and primarily developed by Audi rather than Volkswagen.

B4

The B4 Passat was a face lifted B3, remaining nearly mechanically identical, but with entirely new sheetmetal, and an updated interior design.
The "B4" designation is also used to refer to the "Typ 8C" version of the Audi 80 and RS2 produced from 1991 to 1994. However these are not based on the same platform as the B4 Passat. These are developed from the longitudinal B3 platform too, with some modifications such as an extended rear overhang, longer wheelbase, redesigned suspension and fuel tank.

PL45 (B5)

The B5 platform employs a longitudinal engine placement, which differs from the Volkswagen Group A platform which have been traditionally transversely mounted. This platform was introduced with the first-generation Audi A4 and the 1996 Volkswagen Passat. B5 platform cars can be equipped with a multilink front suspension and a Torsen centre differential for quattro or 4motion branded four-wheel drive systems. A long-wheelbase derivative of this platform - originally designed for the Chinese market and being used in the 1999 Volkswagen Passat Lingyu, but ultimately being used for its rebadged version under the Škoda brand, the 2002 Škoda Superb - is referred to as PL45+.
In late 2000, the B5 Passat received a facelift, referred to as "B5.5".

PL45

The designation "B6" is used to identify the "Typ 8E" Audi A4/S4 produced from late 2000 to 2005. The platform used by these models is formally known as the PL46 platform.
Confusingly, the historical generation of Volkswagen's Passat are also colloquially referred to as "B6", given that they are Volkswagen's sixth generation mid-sized saloon. However this generation of the Passat uses the PQ46 platform, a stretched version of the transverse engined Golf Mk5 and Jetta Mk5's PQ35 platform, also known as A6 to distinguish it from the "true" B6 platform.

PL46 (B6)

The Audi A4, S4 and RS4 has a "B7" generation, from 2005 to 2008. However, this seventh generation of the car was a minor revision of the PL46 platform, but with major revisions to engine ranges, suspension revisions, updated chassis and consumer electronics, and restyled bodywork. The B7 A4/S4 retains the Typ 8E/8H numbers of the B6 A4/S4, though with different suffixes, while the SEAT Exeo though it has derived from the Audi A4 B7 takes the Typ 3R number.

PL47 (B7)

The MLB or MLP component matrix is used in the B8, C7 and D4 families of Audi vehicles. This is noteworthy for placing the front differential ahead of the clutch, allowing the front axle to be moved forward 4 inches. This results in an increase in wheelbase and a slightly more rearward weight distribution for better vehicle dynamics.