Best four-door sedanPosted by: ILoveCars
All 0-60 time results from "Car & Driver" or manufacturer
Mercedes-AMG E 63
C212 series, 2011-present, 557-577 hp, 0-60 mph in 3.2 sec. "V8 Supercars Sedan Showdown" - March 2014 - http://www.roadandtrack.com/new-cars/car-comparison-tests/reviews/a6922/v-8-supercars-the-comparison-65-7-roa0314/
Audi RS 7
The Cadillac CTS-V is a version of the Cadillac CTS. The CTS-V series includes three body styles, all of which feature a pushrod OHV V-8 engine and a sport-tuned suspension. The 4-door CTS-V sedan was introduced in 2004, and the CTS-V sport wagon and coupe were introduced in 2010 for the 2011 model year. The sedan competes in the North American consumer market against other high-performance luxury sedans and "echoes" their quality but is a more affordable option than competitors as the Audi RS6, BMW M5, and Mercedes E63 AMG.
Dodge Charger SRT Hellcat
LX II series, 2015-present, 707 hp, 0-60 mph in 3.4 sec http://www.caranddriver.com/dodge/charger-srt-srt-hellcat
VF series, 2008-present (based on Pontiac G8 GXP from VE series), 415 hp, 0-60 mph in 4.5-4.6 sec http://www.caranddriver.com/chevrolet/ss
Ford Shelby Crown Victoria/Marauder 525
Panther III series, 2003-present, 525-600 hp, 0-60 mph in 4.5 sec. "OFFICIAL: Shelby American Relaunches Crown Victoria 525 with Three Final Editions" https://www.youtube.com/watch?v=MfH8xgDrrUs
The BMW M5 is a high performance version of the BMW 5-Series executive car built by the Motorsport division of BMW. Beginning production in 1986, the first incarnation of the M5 was hand-built utilizing the 535i chassis and a modified BMW M1 engine, being the fastest production sedan in the world at the time of its introduction. Subsequent iterations of the M5 have been built from each generation of the 5-Series platform, including the E34, E39, E60/E61, and most recently, F10, with the first orders delivered in late 2011.