Distinguishing marks from the exterior are the 20-spoke alloy wheels with hidden valves under the center cap and the "Alpina Blue or -Green" metallic exterior colours. Inside, the finest materials are used to fabricate the exclusive feel. A typical blue and green pattern is often used on interior parts such as stitchings on leather. A thin, pinstriped style outside body decor set in gold or silver is also a hallmark of older Alpina cars which is an option on new Alpina models. A metal plate inside also proves the heritage and the serial number of the car.