BMW has patents on two, bizarre three-cylinder engine designs meant to improve on the classic V-twin. One splays out the pistons in a fan shape, adds a cylinder to the traditional design.
Bmw Three Cylinder
2010 BMW 135i – Click above for high-res image gallery
Lending further credence to rumors that BMW will be launching a new engine line that will feature three and four cylinders and comparatively small displacements is a report from Channel 4 in the UK that quotes BMW chief engineer Holger Winkelmann as saying the German automaker will soon launch the "most advanced small engine range ever."