Competes with: Jaguar XJ, BMW 7 Series, Audi A8
Looks like: The redesigned S-Class with V-12 badges
Drivetrain: 523-hp, 6.0-liter V-12 engine; seven-speed automatic transmission; rear-wheel drive only
Hits dealerships: Spring 2014
Joining the S-Class lineup for 2015 is the all-new S600, which is back after a year off. Mercedes introduced the redesigned S-Class and S550 first and is now showing off a bigger, more-powerful signature V-12 engine in the S600. The S-Class had six variants when the 2013 model exited to make way for the 2014, and the new version is catching up quickly. The new S600 joins the redesigned V-8-powered S550 and S63, and the also-V-12-powered S65.
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Since 1991 the S600 got power from an engine with three times the cylinders of your typical four-banger economy car. For 2015, the 6.0-liter V-12 and its 523-horsepower and 612 pounds-feet of torque make up the most significant difference between it and the S550. The numbers are also up half a liter and 13 hp from the 2013 version, and horsepower is up 74 hp from the S550.