2007 Jeep Wrangler Unlimited 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.

NHTSA closes book on Jeep 'trailer hitch' recall after all

After much debating and hand-wringing, the National Highway Traffic Safety Administration now says it has "no reservations" with Chrysler's plan to recall certain Jeep Liberty and Grand Cherokee models over concerns that their fuel tanks, which are located behind the rear axle, could rupture or leak in the event of a rear impact. The longstanding argument between the two entities saw Chrysler openly defy the Feds after a request to recall 2.7 million units back in June.
Chrysler's "voluntary campaign" will instead see it recall 1.56-million 1993-2004 model year Grand Cherokee SUVs, along with 2002-2007 Liberty models. Affected vehicles will get a trailer hitch installed free of charge, which Chrysler says will provide an additional degree of protection for the fuel tanks in the event of a crash. Jeeps with Mopar-branded hitches or hitches that were installed at the factory aren't affected by this recall.
Chrysler's argument throughout this battle has been that the Jeeps in question are no more susceptible to fires than comparable vehicles from the same time period, a position that NHTSA has seemingly arrived at as well. "Those vehicles performed at a rate similar to their peers. That is the keystone analysis as to whether something poses an unreasonable risk to safety," said outgoing NHTSA boss David Strickland during an interview with the The Associated Press.

FCA cuts powertrain warranties to 60k miles

FCA US is cutting back the mileage of its powertrain warranty on some 2016 model year vehicles. Rather than the current five years/100,000 miles of coverage, the new amount is five years/60,000 miles for gasoline-fueled models from Chrysler, Jeep, Dodge and Ram. In March 2015, General Motors made a similar switch to five-years/60,000-miles of coverage for Chevrolet and GMC, and FCA US seems to be citing this as part of the reason for the shift. "Following changes already made by competitors, FCA US is adjusting powertrain warranty coverage for 2016 model year vehicles to be more consistent with industry practices," the automaker said in a portion of its statement. The bumper-to-bumper warranty for these vehicles is unchanged at three years/36,000 miles. According to Automotive News, Fiat's warranty is remaining at four years/50,000 miles. When it changed the mileage limit, GM also halved the number of free service visits for Chevy, GMC, and Buick to two from the previous four. The automaker claimed that the reason for the adjustments to its coverage was that a long warranty was seldom a reason for customers to buy a vehicle. Related Video: Response to Query: 2016MY Powertrain Warranty Adjustment Following changes already made by competitors, FCA US is adjusting powertrain warranty coverage for 2016 model year vehicles to be more consistent with industry practices. For 2016MY, Chrysler, Jeep®, Dodge and Ram Truck vehicles with gasoline engines will be covered by a 5 year/60,000 mile powertrain warranty. The basic coverage, also known as "bumper to bumper," remains at 3 years/36,000 miles. # # # News Source: FCA US, Automotive News - sub. req.Image Credit: Mark Ralston / AFP / Getty Images Chrysler Dodge Jeep RAM Car Buying Maintenance Ownership FCA warranty fca us powertrain