2005 Jeep Liberty Sport Utility 4-door 3.7l on 2040-cars

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2015 Jeep Cherokee finds a bit more fuel mileage thanks to stop/start and aero tweaks

Just a year after it burst onto the scene, Jeep has already made a pretty substantial addition to its V6-powered Cherokee, which has proven to be an extremely popular seller so far for the brand, adding a new stop-start system for the midsize, off-road-ready CUV.
The addition of stop-start included a few aerodynamic tweaks to the Cherokee's polarizing body, resulting in a wallet-pleasing increase in fuel economy. According to the EPA, the front-drive, V6-powered Jeep will now return 21 miles per gallon in the city and 29 mpg on the highway, up from 19 city and 28 highway. Four-wheel-drive, V6-powered Cherokees, meanwhile, will now return 20 mpg in the city and 28 mpg on the highway, up from 19 mpg in the city and 27 mpg.
With 271 horsepower, 239 pound-feet of torque and these newly enhanced figures, it's refreshing to see a larger, naturally aspirated engine that is still able to take the fight to today's crop of small-displacement, turbocharged four-cylinders.

NHTSA still mulling crash tests for recalled Jeeps

Well, no one should ever accuse the government of not giving things plenty of thought. The National Highway Traffic Safety Administration is still debating whether it will retest any of the 1.56 million 1992 to 1998 Grand Cherokees and 2002 to 2007 Libertys that were part of a recall regarding fires after rear-end collisions. And yes, this debate has been going on for over a month. In other news...
The recall dustup started in early June, when Chrysler took the unusual position of refusing a recall request from NHTSA regarding placement of the fuel tank on the effected vehicles. NHTSA said a collision could cause a fire, a position Chrysler took issue with. Extensive negotiations ensued, with Chrysler agreeing to fit certain Jeeps with trailer hitches, which it said would provide some protection to fuel tanks mounted behind the rear axle in the event of a collision.
Part of the issue rests with the amount of data that needs to be processed, according to The Detroit News. NHTSA administrator David Strickland said during a Washington Auto Press Association meeting, "There's a lot of data and Chrysler is being very cooperative in giving us more data." Until that information has been sorted, it looks like re-testing will still be up for debate.

NHTSA closes investigation on 4.7M FCA power modules, no recall

FCA US hasn't had the best time with recalls as of late. Not only did the company recently agree to greater safety oversight and paid $105 million to the government, that came just days after hacking fears prompted a 1.4-million model recall campaign. However, a recent decision to close an investigation by the National Highway Traffic Safety Administration means that the automaker doesn't have to worry about another major recall possibly affecting 4.7 million vehicles, according to the agency's report (as a PDF). Last September, the Center for Auto Safety petitioned NHTSA to investigate an alleged problem with the totally integrated power module (TIPM) on these FCA US models. The group claimed that a fault with the component could cause a variety of maladies, including stalls, not starting, catching fire, unintended acceleration, and airbag non-deployment. At the time, it also submitted 70 cases where this had reportedly happened. According to NHTSA, "no valid evidence was presented in support of claims related to airbag non-deployment, unintended acceleration, or fire resulting from TIPM faults and these claims were found to be wholly without merit based on review of the field data and design of the relevant systems and components." The agency did find signs of an issue with the fuel pump relay in some Jeep Grand Cherokees and Dodge Durangos, but FCA US issued recalls for the problem in September 2014 and February 2015. Without anything else to go on, the Feds don't think it's worth investigating this topic any more.