2007 Jeep Grand Cherokee Laredo Flex Fuel 4 Door 4wd on 2040-cars

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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.

Vile Gossip | Adventures in tire testing

Jean Jennings has been writing about cars for more than 30 years, after stints as a taxicab driver and as a mechanic in the Chrysler Proving Grounds Impact Lab. She was a staff writer at Car and Driver magazine, the first executive editor and former president and editor-in-chief of Automobile Magazine , the founder of the blog Jean Knows Cars and former automotive correspondent for Good Morning America . She has lifetime awards from both the Motor Press Guild and the New England Motor Press Association. This is her first column for Autoblog — look for more Vile Gossip in the future. I began writing at Car and Driver magazine back in its golden age in the 1970s, before I'd actually read it. I knew very little about cars. The only magazine I read religiously was Four Wheeler because I owned big trucks and liked to go off-roading with my Chrysler Proving Grounds friends. My vast 10 years of driving experience up to that point (high-speed dirt-road idiot, taxicab driver, Chrysler Proving Grounds test driver) had less bearing on my being hired at Car and Driver than the fact that the editor just wanted to rile up the all-male staff. He didn't need me for that. They were already in full dudgeon when I arrived. They'd just spent a chunk of time testing a stack of tires for their big tire-test issue, and the editor-in-chief was toe-to-toe with the technical editor over the rankings of the top 10 tires. It was loud, and it was angry. I had no idea that car magazines tested tires. Cab driving had led me to believe that airing up a tire and changing a flat was all you needed to know. I changed so many flats on that cab, I eventually wound up in front of a live audience on the " Oprah Winfrey Show" demonstrating my brilliance with a jack and a tire iron. My point, of course, is that tires are more controversial, and also more essential, than you'd think. My other point is that it's good to get worked up about the subject, but not quite so good to let yourself be seen, as I did, on my hands and knees with my ass up in the air on national TV. This is how I prefer to test a tire: First, pick a top brand. Then accept their invitation to try and beat the crap out of their tire. I chose Yokohama, celebrating its 100th anniversary this year. The big news for them was the GEOLANDER M/T G003!

2019 Jeep Renegade reveals front fascia details

Over the past few months, details of the new 2019 Jeep Renegade subcompact crossover SUV have been trickling out via spy shots. This latest batch show that the front fascia, specifically the front bumper, is getting a number of subtle changes. Among the more noticeable tweaks are the new side vents in the bumper. They've been given a triangular design. Besides offering a nice chunky look, they also encompass the turn signals. This is a cleaner, better integrated look than the current model, which just leaves those indicators in their own little spots in the bumper. The foglights have changed, too. They're now significantly larger, and sit farther inboard in the main grille in the bumper. Moving up in the fascia, we see that the Renegade is getting some new headlights. At least on this model, there's an LED daytime running light halo in the headlamps. It also has a horizontal insert that appears to house an LED headlight element just like that on the new Wrangler. We've seen other prototypes with conventional halogen reflector headlights like on the current model, and we expect they will continue to be used on lower-spec models. There aren't many other changes to see. The rear of the truck looks roughly the same, as do the flanks. From past prototypes, we know that it will continue to have a massive touchscreen option for the infotainment. There also may be a hybrid model. It could be a very mild electric-assist like that on the four-cylinder Wrangler and the V8 and V6 Ram 1500s, or it could be something more. We expect to see the new Renegade revealed by the end of the year at the earliest, and certainly by the end of the next auto show season. Related Video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. Featured Gallery 2019 Jeep Renegade Spy Shots View 9 Photos Image Credit: KGP Photography Spy Photos Jeep Crossover SUV Off-Road Vehicles jeep renegade