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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.

Towing with the 2016 Ram lineup [w/video]

I do not tow things. Ever. Yet I recently found myself at the Fiat Chrysler Automobiles proving grounds in Chelsea, MI, where I'd be testing the hauling capabilities of Ram's current product range. This experience was not only a perfect education for a towing novice like me, but allowed me to tow far more weight than I'd ever consider hauling the real world, and all within the safe confines of the Chelsea Proving Grounds. There was an extremely diverse array of vehicles at my disposal, including Ram's gasoline- and diesel-powered offerings with trucks ranging from the 1500 on up through the 5500 Chassis Cab, as well ProMaster vans. Beyond that, FCA brought out a number of vintage Dodge pickups for me to play with, while also working with Case IH to provide a track-loader I could test. I put together a range of videos covering everything from the classics to the production trucks to the construction equipment. And despite some technical difficulties – you'll notice a distinct lack of in-car videos, with blame going to a corrupted micro SD card – I've assembled ten videos that give an up-close look at Ram's offerings. 2015 Ram ProMaster City Let's start small. The ProMaster City only has a towing capacity of 2,000 pounds. That's a reasonably impressive figure for a van that uses the same powertrain as a Chrysler 200. The 2.4-liter four-cylinder and nine-speed automatic weren't really bothered with the extra weight added by the trailer. Even when accelerating at freeway speeds, the ProMaster City didn't feel out of breath or hampered by its load. That said, the rear of the van was unloaded, which probably wouldn't be the case for most consumers. It's unclear how the City would feel if its driver were taking advantage of the max payload (1,883 pounds) and towing. 2015 Ram ProMaster 1500 To be polite, the Ram ProMaster is a difficult vehicle to like. Its awkward seating position is bus-like and lacks the visibility enjoyed by the Ford Transit or the utter driving comfort of the Mercedes-Benz Sprinter. Its 3.0-liter, four-cylinder turbodiesel engine, meanwhile, is something of an anomaly. While it's potent for a four-cylinder diesel, producing 295 pound-feet of torque and 174 horsepower, those numbers don't feel all that impressive when loaded down. The model I tested was barely using half of its 5,100-pound maximum towing weight and was loaded down with just 500 of its 3,620-pound payload. Yet it lacked the pluckiness of the smaller City.

Are old airbags killers?

Takata airbags may not be the only ones with some very serious problems. A new report from TheDetroitBureau.com claims that the National Highway Traffic Safety Administration has opened its second investigation into bad airbag inflators, and this time, they aren't from Takata. The focus of this latest case is on the airbag inflators in some 500,000 older Chrysler Town and Country minivans and Kia Optima sedans, all of which come from ARC Automotive. While the Takata case looks at problems stemming from the engineering and production process, the ARC investigation focuses on the age of the inflators. As TDB explains, airbag inflators are essentially what the military refers to as shaped charges, sort of like Claymores (for fans of the Call of Duty series). In combat, they blow up in a specific direction, protecting those behind the explosion, although in the case of airbags, the explosion "[creates] a precise rush of hot gases" that inflate the bags. NHTSA's worry is that with the increased average age of today's vehicles, years and years of being bounced, jolted, and shaken about and exposed to often-radical temperature changes have altered the nature of the explosives in these vehicles, causing too big of an explosion. "It may be a reasonable assumption that as these things age they deteriorate." – Analyst George Peterson "It may be a reasonable assumption that as these things age they deteriorate," analyst George Peterson told TheDetroitBureau.com. NHTSA boss Mark Rosekind backed up aging angle. "Cars are lasting on the road a lot longer than ever before," Rosekind told TDB, adding that seals could start breaking down. "Is aging now an issue? That's part of the investigation going on." NHTSA has only identified two "incidents" so far, although according to Center for Auto Safety Director Clarence Ditlow, there's genuine concern that there could be additional unidentified cases. "Could we have missed more? That could be the case," Ditlow told TDB, citing the misidentified deaths in the Takata investigation. Ditlow was quick to point out that, even in older vehicles, airbags are much more likely to protect than harm. "No one is saying you should disable your airbags," the safety advocate told TDB. "You're far more likely to be helped than hurt by one if they go off." At least one automaker, meanwhile, has already been advised of the investigation by NHTSA and is checking its airbags.