The 2014 Mercedes-Benz S63 AMG has been unveiled, finally, revealing a luxury sedan that hits 60 mph in as little as 3.9 seconds thanks to a beast of a twin-turbo V-8 engine.

McLaren may have a hotter P1 in the works, or at least a solid attempt at a 'Ring run coming--either way, we've spotted an unusual prototype marked "XP2R" testing on track.

Ford says it is modifying its C-Max Hybrid and Fusion Hybrid to boost real-world gas mileage. Both cars frequently see figures 5-15 mpg lower than their claimed 47 mpg combined in the hands of owners.

You'll find all of this and more in today's car news headlines from around the High Gear Media network, right here at Motor Authority.

2014 Mercedes-Benz S63 AMG Debuts, Comes Standard With 4MATIC: Video

McLaren P1 ‘XP2R’ Spy Shots

2013 Ford C-Max, Fusion Hybrids To Be Modified To Boost MPG In Real-World Use

The Happiest Rally Duo On Earth: Video

2014 Chevrolet Corvette Stingray Taking On Europe's Supercars Soon

Fast And Furious 7 Crew Asks Where Next Film Should Go

Honda Launches Factory Performance Package For 2013 Accord Coupe

Kickstarter Project For Open-Source Level 2 Electric-Car Charging Station Reaches Goal

A Garage That Comes To You: Is YourMechanic Too Good To Be True?

Nissan Altima Coupe Discontinued For 2014, No Surprise



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