VolkswagenVolkswagenGermany, 1938 > present98 models
9654 photos
31 videos
is contemplating supplying SauberSauberSwitzerland, 1970 > present21 models
166 photos
4 videos
with Formula 1 engines beginning in 2015. Formula 1 changes to 1.6-liter V6 turbos in 2014. 

The speculation is that VW wants to take a step into Formula 1, possibly with a full team. However, it will test the waters first by supplying engines.

The rumor speculates on a very clever plan from VW, which is that VW and Sauber will develop the car at Porsche'sPorscheGermany, 1931 > present43 models
4639 photos
29 videos
develop center in Weissach. Porsche is designing its new sports prototype for the 24 Hours of Le Mans at the center but would help with the development of the F1 engine. The FIA is also reportedly backing VW entering the sport. 

It would be the first time that VW has ever competed in Formula 1. However several of its brands have F1 history. BugattiBugattiFrance, 1909 > present41 models
976 photos
7 videos
, LamborghiniLamborghiniItaly, 1963 > present32 models
1447 photos
19 videos
, and Porsche all have competed or supplied engines. AudiAudiGermany, 1909 > present83 models
8213 photos
27 videos
raced grand prix cars before Formula 1 as Auto UnionAuto-UnionGermany, 1932 > 19647 models
11 photos
.

Porsche raced several chassis officially in 1961 and 1962. It supplied engines to McLarenLamborghiniItaly, 1963 > present32 models
1447 photos
19 videos
from 1983 to 1987 and won the championship in 84 and 85. 

Source: Sports Business Daily and Speedweek