Two Sedans with some similarities, but otherwise different in most aspects such as the modifications, starting price, horsepower, fuel economy, ground shadow size, and height. First of all, the 2018 Audi S3 is priced $200,950 lower compared to the base MSRP of the 2017 Bentley Flying Spur W12 S. Also, the 2017 Flying Spur W12 S has a more powerful engine than the 2018 S3, and it gets 10 fewer miles on a gallon of fuel. In addition, the S3 body is significantly smaller than the Flying Spur W12 S, and in addition to that, it's also slightly shorter. Among similarities are the body structure, market segment, and maximum occupancy.