BMW has long had the letter "i" at the end of its model names—325i, 540i, etc. The letter was initially used to differentiate fuel-injected cars from their carbureted counterparts, which had a three-digit name denoting series and engine size. But BMW has long since dropped carburetors, and it has the "i" electric sub-brand. So after decades, BMW is getting rid of the "i" from the end of model names.
