Posted on 19 October 2008.
BMW’s new model PAS (Progressive Activity Sedan) will be sized between 5-series and 7 series.
The car will most likely be called V5 and is expected to be the first car in the V-series range. Once introduced more cars in the V-series should follow(V3, V1).
Power will come most likely from BMW’s 3.0-liter Straight Six, featuring both gasoline and diesel versions. Eventually more powerful V8 versions will also be added. Even hybrid version is a possibility.
Source: Autoscoop

BMWs do not use V6s.
right. they call them Straight Six