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Hennessey unleashes 2015 HPE700 supercharged Ford Mustang

Thanks to the 2015 Dodge Challenger SRT Hellcat there is a new magic number in the muscle car world - 707. To raise eyebrows these days in the power war, a vehicle needs to match or preferably exceed that palindromic figure. The tuners over at Hennessey took a look at it for their 2015 HPE700 Mustang and decided to go one better. Well, ten actually, because they bestowed their latest creation with 717 horsepower and 632 pound-feet of torque.
The HPE 700 Mustang takes the standard Mustang GT with its 5.0-liter V8 and turns up the power a few hundred notches with a Roots-type supercharger running at 7.25 psi. Hennessey claims that this boosted 'Stang can rocket to 60 miles per hour in about 3.6 seconds and cover the quarter-mile in 11.2 seconds at 131 mph. For those keeping score at home, those figures are very similar to Challenger Hellcat.
To cope with all of the added boost, the engine gets a high-flow throttle body, upgraded injectors, new fuel pump, stainless steel exhaust and Hennessey's calibration for the engine management. Pricing for the package is $59,500, including the base 2015 Mustang GT, but the company is limiting production to 500 units for the 2015 model year. Founder John Hennessey told Autoblog that he has already received about a dozen orders for them.

2015 Ford F-150 to get up to 26 miles per gallon

The 2015 Ford F-150 is one of the most important US vehicle debuts in years, be it in the pickup segment or the entire marketplace. While we've already known about the truck's engine lineup, its payload ratings and we've even learned a bit about how it drives, the truck's EPA-estimated fuel economy ratings have remained a mystery. The wait is finally over. Ford has announced numbers that put the latest F-150 as the mileage leader among gasoline-powered, full-size pickups in the US, with its new 2.7-liter EcoBoost V6 topping the charts. Starting with the entry-level naturally aspirated 3.5-liter V6, the rear-wheel-drive F-150 is rated at 18-miles-per-gallon city, 25-mpg highway and 20-mpg combined. Opting for four-wheel drive drops those numbers slightly to 17/23/19. If fuel economy is your absolute priority, then upgrading to the 2.7-liter EcoBoost V6 is the hot ticket. It improves things further to 19/26/22 in rear-wheel drive trim or 18/23/20 with four-wheel drive. The carryover naturally aspirated 5.0-liter V8 is rated at 15/22/18 as a 4X2 or 15/21/17 as a 4X4. Finally, the flagship 3.5-liter EcoBoost V6 tops the range in available torque and offers buyers 17/24/20 ratings with rear-wheel drive or 17/23/19 with four-wheel drive. "We are delivering with the toughest, smartest and most capable F-150 ever – and now the highest EPA-estimated fuel economy ratings of any full-size gas-powered pickup in America," said Raj Nair, Ford group vice president, Global Product Development, in the company's announcement. Depending on engine and drivetrain configuration, Ford contends that the 2.7-liter EcoBoost's top rating puts fuel economy up between 5 and 29 percent over the current generation, thanks in large part to the truck's lighter aluminum construction. Obviously, these are EPA estimates, and your mileage may vary – ours has. Recently, Autoblog team members have had real difficulty even approximating government mpg estimates on many EcoBoost models, including the new F-150. Scroll down to read Ford's full announcement, including comparisons to rival models.

NHTSA closes Ford F-150 EcoBoost acceleration probe

Typically when we report on the findings of an investigation from the National Highway Traffic Safety Administration, it's because the government body has discovered a safety issue and prescribed a recall. In this case, however, NHTSA has closed an investigation into a reported performance deficit without ever getting to the recall stage.
The issue revolves around the Ford F-150 - specifically those equipped with the 3.5-liter EcoBoost engine - of which some 360,000 were built in the 2011, 2012 and 2013 model years. After receiving an initial 95 complaints, NHTSA opened an investigation last May - almost a year ago - into the reported issue of reduced engine power under hard acceleration. The agency has since received a total of 525 such complaints, and Ford itself reported receiving over 4,000.
Together, NHTSA and Ford determined that the problem resulted from cylinders misfiring, an issue itself stemming from water getting into the charge air cooler (CAC) mated to the turbochargers. In particularly humid or rainy conditions, water was found to get into the CAC, causing some of the cylinders to misfire, which in turn triggered the ECU to disable those cylinders in order to protect the catalytic converter from damage.