Though Infiniti’s G series is very popular in its category, sales do not unfortunately reflect this. And with several G versions, sales are divided even more! You have a choice between a sedan, a coupe, and the new convertible. The first two come standard with rear-wheel drives, but it is possible to upgrade to all-wheel drive systems. The Infiniti G is a sports car competing against the BMW 3 Series or the Audi A4.