2007 Jeep Liberty Sport 4x4 – 3.7l V6 on 2040-cars

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Feds chastise Marchionne over Jeep recall, only 13% repaired so far

Following the significant outcry surrounding the General Motors and Takata airbag safety crises this year, the National Highway Traffic Safety Administration seems to be taking a much more aggressive role in pushing owners to repair their recalled vehicles. In the agency's latest move, it's urging Jeep drivers to get their models fixed. Acting NHTSA administrator David Friedman even sent a letter to Fiat Chrysler Automobiles CEO Sergio Marchionne pressing him to get more of the SUVs fixed. The problem goes back to the recall of the 2002-2007 Liberty and 1993-1998 Grand Cherokee because of the possibility for the fuel tank to rupture in some rear crashes. The campaign affected over 1.5 million vehicles, but Chrysler initially refused NHTSA's request for a repair campaign. The automaker eventually came up with a fix that involved adding a trailer hitch to provide extra protection to the tank. The feds believe the danger "will be reduced by the remedy now offered by Chrysler," according to the statement. However, this latest push comes out of NHTSA's concern that only three percent of the affected vehicles are repaired, although Chrysler maintains some 13.4 percent have actually been fixed. The agency is asking the automaker to reach out to owners "proactively," and get them to bring the Jeeps in dealers. According to the the feds' statement, the company "has nearly 400,000 parts available" to perform the fixes, and it's still producing more. Friedman's letter to Marchionne goes even further, alleging NHTSA has received reports that dealers are turning customers away who request the recall. He asks the CEO to prove within 15 days that these claims are false. "Given the low rates of repair that Chrysler has reported more than a year after the recall, significantly more aggressive steps are required," says a portion of the note. According to The Detroit News, Chrysler has subsequently promised to speed up the recall work, vowing that all dealers will have at least 12 repair kits in stock by Monday. Further, it has announced plans to ramp up its notification campaign with Facebook ads and public service announcements. Scroll down to read NHTSA's full statement on the matter, and Friedman's letter to Marchionne can be read in PDF format, here.

2015 Jeep Renegade Sport 4x4 Quick Spin [w/video]

Which is the most entertaining Jeep Renegade you can get? While one might make an argument for the Trailhawk model and its accompanying off-road hardware and consequential go-anywhere ability, that car comes with one glaring flaw – its 2.4-liter engine and nine-speed automatic transmission just aren't very entertaining. Instead, I submit the turbocharged, 1.4-liter base engine and its accompanying six-speed manual, a position that was reinforced after a recent stint behind the wheel of a very basic Sport 4x4. Not only do you get a fair amount of the Trailhawk's off-road ability – the Selec-Terrain system and a 4WD Lock mode are standard, but you'll be without the 20:1 crawl ratio and Rock off-road mode – you'll also enjoy a more dynamically interesting powertrain. Read on to see why the force-induced Renegade might just be the way to go. Driving Notes My first date with the Renegade was on the mostly empty, winding roads of northern California. There, the 1.4-liter turbocharged inline-four with 160 horsepower and 184 pound-feet of torque felt fine – with no traffic and few stoplights along the drive route, it was easy to keep the engine on boil. But this engine isn't as enjoyable in day-to-day suburban traffic. Power arrives suddenly – peak torque comes between 2,500 and 4,000 rpm – and if you don't use it, you lose it. There's not much oomph in the higher end of the rev range. With such a peaky powerband, it's easy to get caught flat-footed if you're not paying attention. Thankfully the manual transmission makes it simple to stay engaged and in the correct gear. The stick-shift is enjoyable to use, with a firm clutch that's easy to modulate and shift action that isn't sloppy or vague. The 1.4-liter engine sounds good. Turn down the stereo, stomp on the throttle, and you'll be treated to a delicious turbo whistle and a smooth exhaust note. I've said it before and I'll say it again: I want Mopar to offer the Fiat 500 Abarth's exhaust on the Renegade. It'd be fun. If you do prefer the stereo, know that the Renegade's standard four-speaker unit is weak. Base models don't offer Bluetooth or satellite radio, but you can add both of those luxuries, two extra speakers, and a five-inch touchscreen for just $695. Not a bad bargain. The Koni frequency selective dampers do an excellent job of managing both small, frequent imperfections (like freeway expansion joints), and the bigger potholes that still haven't been fixed after the havoc of Detroit's winter.

Here's what it'll take to build a Jeep Grand Cherokee Hellcat

Let's get one thing straight: We want a 707-horsepower Grand Cherokee Hellcat to happen. Badly. The latest report from Motor Authority is encouraging; the bonkers SUV supposedly has a codename, Project K, and has been given the green light for production. Fingers crossed. You might be wondering why the Trackhawk isn't already a thing. Hellcat engines exist, SRT Grand Cherokees exist, so just combine the two, right? It's not quite that easy. Here, we outline what needs to happen, why it should be the quickest Hellcat vehicle out there, and why it won't come anywhere near 200 miles per hour. How To Build A Hellcat Jeep The first engineering problem is feeding the air-intensive beast that is the 6.2-liter supercharged V8. The first engineering problem is feeding the air-intensive beast that is the 6.2-liter supercharged Hellcat V8. Breathing is important on two counts: pulling in enough air for the combustion to put out 707 hp, and then cooling the various heat exchangers once the engine is up to temperature. Dodge did it with the Charger and Challenger, it can do it with the Jeep. This is one place where the Grand Cherokee's larger frontal area might be a boon, as it gives the engineers more surfaces through which to suck air. Once you generate the 707 horsepower and 650 pound-feet of torque, it has to get to the wheels somehow. Jeep's current SRT all-wheel-drive system will at least need some beefing up to handle the torque. It could require a more complete re-engineering. We at least know the ZF-supplied eight-speed auto, used in the Dodge Hellcat models, is up to the task. The Hellcat engine should fit in the Grand Cherokee, as it's about the same size as the 6.4-liter currently in SRT Jeeps, but the Hellcat is taller because of its supercharger. The hood may need to be raised or at least resculpted for clearance, as well as to address those cooling needs. Quicker Than Everything, But Not Faster 200 mph? We're skeptical, from both a physics standpoint and a legal one. A reminder of the quick/fast distinction: quick is acceleration, fast is road speed. The Jeep's all-wheel drive will help put the Hellcat engine's power to the ground in a more manageable way than the Charger and Challenger do through just the rear wheels. That means better acceleration times than the Dodges (11.0 seconds in the quarter-mile for the Charger Hellcat, 11.2 for its Challenger sibling).