Nah. BMW used to have sane numbering, as did Mercedes. Nowadays its all made up bullshit. 28i? you might thing straight six 2.8 Liter, well its a 2.0 Turbo. M550d? 3 Liter. Merc E63? 6.2 Liter. Dont even get me started on Porshes non-turbo/electric Turbos, or Mercedes 4 door "coupes".