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Chrysler says its 8-speed transmissions will save 700 million gallons

Chrysler Group's TorqueFlite eight-speed transmission could be earning some serious green bragging rights if the company's projections are correct. The recently widely proliferated automatic gearbox, which is now in more than a million vehicles around the world, is poised to save drivers an estimated 700+ million gallons of fuel over the vehicles' lifetimes (an expected cost savings of $2.5 billion). In addition, Chrysler expects a reduction in CO2 emissions by more than six million metric tons. According to Chrysler, and depending on the vehicle, the TorqueFlite can improve fuel economy. The TorqueFlite autobox features particularly close ratios from fifth to eighth gear (see the press release below for the specific numbers), and uses low-viscosity fluid that doesn't need to be replaced. Transmission software adapts to the driving situation to optimize efficiency based on driver behavior, temperature, grade, stability control, and longitudinal and lateral acceleration. The TorqueFlite is capable of handling a variety of duties. As evidenced by the wide range of vehicles Chrysler Group has seen fit to equip with the eight-speed transmission, the TorqueFlite is capable of handling a variety of duties. Since its 2012 introduction, the TorqueFlite has gone from performing cog-swapping duties in Dodge Charger and Chrysler 300 models equipped with the 3.6-liter Pentastar V6 to changing gears in vehicles such as the Pentastar- and Hemi-powered Dodge Durango, Jeep Grand Cherokee and even the Ram 1500 EcoDiesel. For the 2015 model year, the eight-speed is finding its way into even more vehicles with the addition of a third version. In addition to the American-made TorqueFlite 845RE and 8HP70, the new 8HP90 will be manufactured in Saarbrucken, Germany. The 8HP90 is designed for higher torque loads, making it ideal for high-performance vehicles like the 2015 Dodge Challenger SRT Hellcat. The already-in-use 8HP70 will expand its duties to be used in 2015 Hemi models such as the Dodge Charger, Challenger, and Challenger SRT8. You can see the list of those benchmarks in Chrysler's press release below.

2013 Dodge Charger SRT8 Super Bee

I can pinpoint the exact moment when I fell in love with this car. It was starting down a nearly straight entrance ramp at 15 miles per hour when I buried the throttle. In a moment, I was thrown back into my seat as the big SRT8's engine came to life with commensurate sound, fury and force, bringing me up to 75 mph in what felt like two blinks of an eye. This thing feels so much quicker than its 470 horsepower and 470 pound-feet of torque would lead you to believe. And mashing the right pedal never, ever gets old.
But beyond sheer speed, I found a whole lot to like about the Charger SRT8 during my week with the Pitch Black test car here in Detroit. And while the whole Super Bee kit isn't really my style, it's really easy to overlook those badges for a package that offers so much for so little.
Driving Notes

2015 Dodge Charger R/T Scat Pack Quick Spin

"Scat Pack" is plucked from The Big Book of Dodge Nameplates to describe what is basically the average of the Charger R/T and Charger SRT 392. Unnecessary horsepower always seems to go down better with a dose of heritage. If you think it's a silly name, just be thankful Dodge didn't call it an S/RT or an R/T-S. In previous years, a similar formulation was known as the SRT8 Super Bee. Going by another name, it's still as sweet and wears the same hurried-looking pollinator on the grille. We do wonder: What has displeased him so, and why does he have wings and wheels? The packaging is at least fresh. All Chargers get updates for 2015, including improved interiors and a Dart-on-steroids exterior redo. The new lines work especially well on the more aggressive models, including this Scat Pack car. Like the Super Bee before it, the Scat Pack gets the 6.4-liter engine from SRT 392; for 2015 it gets a slight output boost to 485 horsepower and 475 pound-feet of torque, respective increases of 15 and 5. It does without the SRT three-mode suspension and comes with cloth seats (leather is an option) to keep the price down. The Scat Pack also has slightly smaller Brembo front brakes, narrower wheels, and different rubber. It does, however, cost eight grand less and is just as quick in a straight line. Intriguing. Driving Notes Scat Pack cars get an electronically controlled active exhaust that we'd call hyperactive. It's loud all the time, opening its widest at startup, idle, and when you ask for any appreciable amount of power. Sport mode supposedly makes a difference, but we couldn't discern loud from louder. It's a delicious and appropriate loudness, with a brassy trumpet tone to it, and the engine makes top-fuel noises at full tilt. The squeal of the rear tires can be heard from every stoplight no matter the road conditions. A light touch avoids leaving a mark if you're so inclined. We weren't. When the tires eventually smear into the realm of traction, this thing is pretty quick – hitting 60 miles per hour takes 4.5 seconds. There's also an adjustable launch control mode if you want to cut out some of the wheelspin. The eight-speed transmission shifts smoothly. Quicker, more-palpable shifts are had in Sport mode, but occasionally the transmission still needs a moment to drop down from seventh or eighth when you mash the throttle. Despite its two overdrive gears, this Charger is still loud on the highway. In a good way. Probably.