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40+ cars that barely avoid the gas guzzler tax

The Gas Guzzler schedule, with mpg ratings and charges that haven't changed since 1991, lays out which fuel-swillers owe what to Uncle Sam.
I started thinking about the "Gas Guzzler Tax" - considerably less well known as The Energy Tax Act of 1978 - when I was driving Dodge's new Challenger SRT Hellcat last week. Unsurprisingly for a car that can burn 1.5 gallons of gas per minute at max tilt, theoretically able to empty a full tank of premium in about 13 minutes, the Hellcat will be subject to the Gas Guzzler Tax schedule when it goes on sale.

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.

Mopar highlights wild SEMA creations, AWD Challenger Concept

Thanks to 15,345 square feet of display area, FCA US' Mopar division certainly has ample space to display its parts and accessories at the SEMA Show. To lure attendees to check out all of those cars and components, the company is now revealing ten tuned vehicles for this year's aftermarket event. This isn't even the brand's whole fleet for the show, but it includes some major highlights for Dodge and Ram fans. A lack of traction traditionally makes rear-wheel-drive muscle cars dismal to drive when the weather gets slippery, but the Dodge Challenger GT AWD Concept (above) solves that age-old problem at SEMA. In addition to powering all four wheels through an eight-speed automatic, it boasts an angry-looking, wide-body kit with aggressively flared wheel arches. The asymmetrical stripe with Header Orange accents also adds some extra panache to the Destroyer Grey and Matte Black color scheme. The coupe can back up the macho look thanks to the Scat Pack 3 Performance Kit that adds 75 horsepower and 44 pound-feet of torque to the 5.7-liter V8. However, before you get too excited about driving one this winter, FCA US spokesperson Ariel Gavilan tells Autoblog: "It is only a concept." Mopar isn't done tuning Dodges for SEMA. The Charger Deep Stage 3 shows what's possible with the company's catalog by packing the Scat Pack 3, strut tower braces, coilover suspension kit, and bigger brakes. Meanwhile, the blacked-out Dart GLH Concept tries to harken back to the style of the famous Omni GLH by fitting a red-accented body kit, including a Mopar Performance aluminum hood. If the standard Ram 1500 Rebel is somehow too subdued, check out the Rebel X (right) in a vibrant shade called Copper. To be ready for anything offroad, it wears some muscular flares to fit 17-inch beadlock wheels and 35-inch Toyo tires. A concept, two-piece front skid plate protects the front. Drivers should also be comfortable no matter where they drive thanks to prototype Katzkin leather seats and a concept air-ride suspension. Chrysler enjoys some mods, as well. The 300 Super S has suave style with Matte Cerulean paint, concept 22-inch wheels, and a grille with little Mopar Ms dotted around it. Performance also sees a boost with a tuned engine, bigger brakes, and coilover kit. The gray 200 S Mopar is similarly stylish with a complete body kit, including a conceptual, dual-vented hood. Fiat and Ram's commercial models aren't left out of the SEMA fun, either.