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"The Hellcat moniker is officially way too good to use only on the Dodge Challenger. Enter the Charger SRT Hellcat, which brings the angry-kitty badge and ludicrous 707-hp supercharged V8 to Dodge&amp;#039;s four-door sedan\u2014because think of the families, you know? In the wake of the super-duper Charger&amp;#039;s unveiling, we pondered the other mega-horsepower production sedans upon which the Hellcat is ready to pounce like so many unsuspecting, overfed hamsters. READ MORE: The Dodge Charger SRT Hellcat is officially the most powerful sedan on Earth For the purposes of this conversation, we&amp;#039;re only including true sedans with enclosed trunks to keep the comparisons with the Hellcat honest. That knocks out five-doors like the Porsche Panamera Turbo S and the Audi RS7, which the Dodge out-powers, anyhow. In addition, we use the base version of each car to establish these power rankings; performance options that increase output\u2014like the BMW M5&amp;#039;s Competition package\u2014don&amp;#039;t count, though we do mention their availability. READ MORE: R&amp;amp;amp;T Comparo\u2014Five 500+ HP super-sedans Also note: Different models from a single manufacturer that use the same powertrain are grouped together. This was done in the spirit of inclusion and also to ensure some variety as you scroll\u2014who wants to see three Benzes listed in a row? Finally, to help parse all that power and guide you toward the best bang for your buck, we calculated the price of performance with a handy &amp;quot;cost per HP&amp;quot; figure. Enough talking, now\u2014on to the list!  BMW M5 / M6 Gran Coupe: 560 HP Engine: twin-turbocharged 4.4-liter V8 Price: $95,850 / $117,950  Cost per HP: $171.16 / $210.63 Only in a world where a 707-hp monster sedan reigns supreme could the mighty M5 and M6 Gran Coupe find themselves last on our list. Both can be ordered with a Competition package that boosts output to 575 horsepower, but equipping them as such would only move them up only one spot. And while the special-edition 30 Jahre M5 makes 600 horsepower, only 30 of those will be sold in America; if you haven&amp;#039;t ordered yours yet, it&amp;#039;s already gone. READ MORE: 6 road courses, 6 days, and the BMW M6 Gran Coupe   Rolls-Royce Ghost: 563 HP Engine: twin-turbocharged 6.6-liter V12 Price: $267,800 Cost per HP: $475.67 Back in the old days, Rolls didn&amp;#039;t even list engine output, saying only that their power was &amp;quot;adequate.&amp;quot; Such is the tawdry state of affairs today that even Rolls-Royce must stoop to publishing such vulgar information\u2014it&amp;#039;s like catching a peek of Helen Mirren in her knickers. Then again, 563 horsepower shows the old dame&amp;#039;s still got it going on. READ MORE: Steady as she goes\u2014the Rolls-Royce Ghost Series II   Mercedes-Benz S63 AMG 4MATIC / E63 AMG S-model 4MATIC / CLS63 AMG S-model 4MATIC: 577 HP Engine: twin-turbocharged 5.5-liter V8 Price: $142,375 / $101,525 / $107,425 Cost per HP: $246.75 / $175.95 / $186.18 This trio of blitzin&amp;#039; Benzes flaunts a feisty twin-turbo 5.5-liter V8. In the S63 AMG 4MATIC, that hot mill hauls the 4943-pound sedan to 60 mph in 3.8 seconds (a tenth shy of Dodge&amp;#039;s claimed Charger Hellcat number) and propels the S63 to a top speed of 187 mph. In the CLS63 AMG S-model 4MATIC, it&amp;#039;s good for a 0-to-60-mph time of 3.2 seconds and a Vmax of 186 mph.Let&amp;#039;s not forget the E63, which is also ridiculous and is also offered as the world&amp;#039;s most badass station wagon, just because Mercedes can. READ MORE: Monster in a tux\u2014Driving the Mercedes-Benz S63 AMG 4MATIC    Bentley Flying Spur W12: 616 HP Engine: twin-turbocharged 6.0-liter W12 Price: $221,125 Cost per HP: $358.97 Finally, a little truth in advertising: The Bentley chaps named their four-wheeled version of Downton Abbey the Flying Spur, and fly it does. The sheer magnificence of a car this enormous making this much power and doing it so elegantly is almost soothing\u2014until you mash the gas pedal against the plushly carpeted floor and convert the landscape into a blurry smear. READ MORE: The Bentley Flying Spur defies physics, drips luxury   Mercedes-Benz S65 AMG: 621 HP Engine: twin-turbocharged 6.0-liter V12 Price: $224,625 Cost per HP: $361.72 That most folks can&amp;#039;t buy their own zeppelin is one of modern society&amp;#039;s greatest disappointments. You may, however, consider the truly prodigious S65 AMG one hell of a consolation prize. (If you have close to a quarter-million bucks, that is.) Sure, you won&amp;#039;t be able to swoop over your neighborhood and drop small incendiary devices on the annoying microdog next door, but that&amp;#039;s almost asking too much, isn&amp;#039;t it? READ MORE: Mercedes unveils its latest V12 twin-turbo luxo-missile   Dodge Charger SRT Hellcat: 707 HP Engine: supercharged 6.2-liter V8 Price (est.): $63,000 Cost per HP (est.): $89.11 Say &amp;quot;Hell, oh, kitty!&amp;quot; Dodge spreads the 707-hp love from the ballsy, bold Challenger SRT Hellcat to this four-door, which flaunts 86 more horsepower than the S65 AMG at a price likely to come in at roughly one-quarter that of the big Benz. It might be a little nuts for Dodge to unleash this weaponized sedan on the general populace, but why should the devil have all the fun? But please, Dodge, for the love of all things sacred, just don&amp;#039;t stick this engine in the Charger cop car. READ MORE: The world&amp;#039;s most powerful sedan is a Mopar  This article was originally published at CARandDRIVER.com "^^<http://www.w3.org/2001/XMLSchema#string>
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