! Guess what, it is but it isn't. Not only is the 60 horses the difference, but the S4 and S4 Avant both come equipped with an extra forward moving gear, meaning the gearing in the bi-turbo's cars are closer, thus the cars accelerate faster. If you're looking to compare what we thought of the S4 Avant with the Passat wagon, take a gander at the Test Drive section in this month's issue.