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FCA's Pentastar V6 gets more power, efficiency for 2016

Already a vital member of FCA's powertrain lineup, the 3.6-liter Pentastar V6 is receiving major efficiency improvements for 2016. Thanks to a massive amount of new tech attached to the mill, fuel economy is up six percent, and torque below 3,000 rpm jumps nearly 15 percent. The updates arrive first in the 2016 Jeep Grand Cherokee, but they should proliferate to other models eventually. At least in the Grand Cherokee, the tweaks push power up five horsepower to 295 ponies. FCA's engineers went through the Pentastar from top to bottom to eke out as much efficiency as possible. For example, there's now a two-speed variable-valve lift system that can run in low- or high-lift modes. This upgrade is responsible for 2.7-percent better economy, the company claims. A new intake manifold with longer runners and updated variable-valve times also helps boost the torque output. Further improvements come from pushing the compression ratio to 11.3:1, from 10.2:1 before. Perhaps most impressive is that despite all of the innovations, the latest Pentastar actually weighs four pounds less than the current version. Beyond the Pentastar improvements, all of the FCA US gasoline engines, except for the Viper's 8.4-liter V10, will be E15-compatible for 2016. The company says that it wants to be ready for the higher ethanol content fuel's greater use in the near future.

470,000 Jeep Liberty, Chrysler 200, and Dodge Avenger models recalled for restraint defect

Fiat Chrysler Automobiles said on Friday it is recalling 470,000 vehicles worldwide to replace a component that may inhibit deployment of the vehicles' active head restraints in the event of a crash. Around 414,000 of those vehicles were sold in the United States. Apparently, "a component common to the modules of certain vehicles may degrade after extensive vehicle use." The recall covers 2012 Jeep Liberty sport utility vehicles and 2012-13 Chrysler 200 and Dodge Avenger midsize cars. FCA says a warning light may alert owners to the problem. The Italian-American automaker said it is unaware of any injuries or accidents related to the recall. The U.S. National Highway Traffic Safety Administration opened an investigation into the issue in June. (Reporting by David Shepardson; Editing by Steve Orlofsky) Related Video:

Hank the Autodog takes a ride in the long-term 2014 Jeep Cherokee

Autoblog readers, meet Hank, my 40-pound, six-year-old Shar Pei and Staffordshire Terrier mix, a combination also known as a Pit Bull. Pit Bulls and car enthusiasts have a lot in common. They're a little intimidating to your average man on the street, but at the end of the day all they want to do is feel the breeze in their ears. Dogs who love car rides are the ultimate enthusiasts, and Hank especially is a canine connoisseur of cars. There is nothing Hank likes more than to hop in and go for a ride. With an owner like me, he has developed refined tastes when it comes to cars. As our long-term Jeep Cherokee is about to leave the Autoblog Garage, and since the weather is warming back up, it's the perfect time to give our Autodog one last spin in his favorite Jeep. We wanted to see what a car ride looks like from a dog's perspective. Luckily, we have a cache of GoPros and plenty of cars on hand to give Hank one last chance to go for a window-down ride. After many pets, treats, and drives around town, we put together this video montage of Hank's best day ever.