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Watch this 650-hp Hennessey Jeep Grand Cherokee go from 0-60 in 3.9 seconds

Hennessey Performance Engineering has created an HPE650 package for the Jeep Grand Cherokee SRT fitted with the 6.4-liter Hemi engine. When it leaves the showroom floor it has 470 horsepower and gets from 0-60 miles per hour in 4.8 seconds. When it leaves Hennessey's garage floor after the upgrade it has 650 horsepower - 530 hp at the wheels, according to Hennessey - and gets to 60 mph in 3.9 seconds on its way to running the quarter-mile in 12.6 seconds.
There's more than just a Roots-type supercharger bolt-on, with ported cylinder heads and high-flow headers among the many changes made to the engine. You can watch this pre-2014 facelift silver model prove its spec sheet on the drag strip in the video below.

2015 Jeep Renegade leaks out ahead of Geneva debut

Meet the Renegade - Jeep's new baby crossover that's set to debut at the Geneva Motor Show this week. The folks at Jalopnik got their hands on a small batch of photos of the new little cutie, showing what appears to be a Trailhawk (read: trail-rated) version, as well as a more civilian-spec Renegade, complete with a new removable roof system, reportedly called My Sky.
Details are slim, though in addition to the exterior images, one photo of the interior has also been leaked, showing what appears to be a small, yet functional (and nicely appointed) cabin. Early reports suggested that the new small Jeep would be based on the Fiat 500L platform, though Jalopnik rightly points out that the Renegade looks an awful lot like the Panda 4x4. Regardless, there's still likely some 500L bones under there, and we'll know more once the official details are revealed in the very near future.
Head over to Jalopnik for more shots of the cute little Renegade, and stay tuned for more information as it becomes available.

Chrysler recalling 644k more Dodge Durango and Jeep Grand Cherokee SUVs over brakes

Early last month, we reported on Chrysler issuing a preemptive, proactive recall for about 25,000 units of the Jeep Grand Cherokee and Dodge Durango. The issue revolved around a brake system that wasn't causing any actual problems, but delivered an unsatisfactory brake feel, so Auburn Hills called in a good 25,000 of SUVs around the world, including 18,700 in the United States.
Now Chrysler, having apparently determined that the brake problem on its sport utes is actually much bigger than it initially realized, has drastically broadened the scope of the recall. As a result, the National Highway Traffic Safety Administration has issued a recall for precisely 655,354 examples of the Grand Cherokee and Durango, covering the 2011 through 2014 model years. In addition, Chrysler is recalling 42,380 units in Canada, 21,376 in Mexico and 159,685 overseas.
The problem which Chrysler found revolves around the brake booster, whose center shell has been found to be subject to corrosion, allowing water to get into the brake system. That water in turn could freeze, preventing the brakes from working as well as expected.