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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.

Autoblog Podcast #370

Episode #370 of the Autoblog podcast is here, and this week, Dan Roth, Michael Harley and Craig Fitzgerald of BangShift and Boldride talk about the 2015 Jeep Renegade, the Consumer Reports list of Cars to Avoid, and the Geneva Motor Show, which opened today. We start with what's in the garage and finish up with some of your questions, and for those of you who hung with us live on our UStream channel, thanks for taking the time. Check out the new rundown below with times for topics, and you can follow along after the jump with our Q&A. Thanks for listening! Autoblog Podcast #370: Topics: 2015 Jeep Renegade Worst Cars of 2014 Geneva Motor Show preview In the Autoblog Garage: 2014 Volkswagen Jetta SE 2014 SRT Viper 2015 Subaru WRX Hosts: Dan Roth, Michael Harley Guests: Craig Fitzgerald Runtime: 01:28:37 Rundown: Intro and Garage - 00:00 Jeep Renegade - 27:28 Cars to Avoid - 41:46 Geneva Motor Show - 59:54 Q&A - 01:11:04 Get the podcast: [UStream] Listen live on Mondays at 10 PM Eastern at UStream [iTunes] Subscribe to the Autoblog Podcast in iTunes [RSS] Add the Autoblog Podcast feed to your RSS aggregator [MP3] Download the MP3 directly Feedback: Email: Podcast at Autoblog dot com Review the show in iTunes Podcasts Geneva Motor Show Jeep Subaru Volkswagen Concept Cars worst cars

NHTSA boss Strickland weighs in on Jeep recall fracas

Adding yet another chapter to the ongoing Jeep recall story, the National Highway Traffic Safety Administration (NHTSA) head David Strickland has gone on record to defend the government's request that Chrysler recall 2.7 million out-of-production Jeep Grand Cherokee and Jeep Liberty vehicles after the agency investigated fiery rear-end collisions that have reportedly killed at least 51 people over the years. In statements made to The Detroit News, Strickland said, "We felt very strongly that the process that we undertook and the findings that we made and ... we made the decision to issue a recall request. We do not take that very lightly." The top US auto safety regulator stopped short of telling owners to park their cars until the automaker takes action. "They can make their own risk assessment and their own choices," he said.
Chrysler does not intend to recall the models, insisting the "vehicles met and exceeded all applicable requirements of the Federal Motor Vehicle Safety Standards, including FMVSS 301, pertaining to fuel-system integrity" when they were manufactured and sold. "The company does not agree with NHTSA's conclusions and does not intend to recall the vehicles cited in the investigation. The subject vehicles are safe and are not defective," Chrysler announced last week in a statement. "We believe NHTSA's initial conclusions are based on an incomplete analysis of the underlying data, and we are committed to continue working with the agency to resolve this disagreement."
Legally, Chrysler has until June 18 to formally respond to NHTSA's request. If the automaker does not take action, NHTSA is expected to issue a formal finding and seek a recall.