There's not a bad choice in the Audi S7 and RS 7's competitive set, to be honest.
But we really do like these two for their unique style and their monstrous V-8 engines.
The Mercedes-AMG CLS63 S comes closest in terms of style and panache and its twin-turbo V-8 is just as thrilling as what you'll find in the Audis.
The BMW M6 Gran Coupe is a close facsimile, but ultimately isn't quite as entertaining to drive—something we admit with chagrin when it comes to some modern BMWs.
But don't count out the Cadillac CTS-V.
Perfected over three generations, Detroit's German-style hot-rod outdoes its immediate sedan rivals even if it doesn't have quite the sexy shape of the Audis.
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|2018 Audi S7||2018 BMW M6Get Your Price||2018 Cadillac CTS-VGet Your Price||2018 Mercedes-Benz CLS ClassGet Your Price|
|16 MPG City / 24 MPG Hwy||14 MPG City / 20 MPG Hwy||14 MPG City / 21 MPG Hwy||16 MPG City / 26 MPG Hwy|
|Twin Turbo Premium Unleaded V-8||Twin Turbo Premium Unleaded V-8||Supercharged Gas V8||Twin Turbo Premium Unleaded V-8|
|Mid-Size Cars||Compact Cars||Mid-Size||Compact Cars|
|4.0 TFSI Premium Plus||Gran Coupe||4-Door Sedan||CLS 550 Coupe|
|All Wheel Drive||Rear Wheel Drive||Rear Wheel Drive||Rear Wheel Drive|
|quattro Sportback||Sedan||4 Door Sedan||Sedan|
|Auto-Shift Manual w/OD||Auto-Shift Manual w/OD||Automatic w/Manual Shift||Automatic w/OD|
|Detailed Spec Comparison|
|2018 Audi S7 vs. 2018 BMW M6||2018 Audi S7 vs. 2018 Cadillac CTS-V||2018 Audi S7 vs. 2018 Mercedes-Benz CLS Class|