Ford has finally released horsepower ratings for each of the three engines that will equip the 2015 Mustang. The standard (in North America) 3.7-liter V6 produces 300 hp, while the 2.3-liter EcoBoost turbocharged engine produces 310 hp and 320 lb-ft (433 Nm) of torque. The range-topping Mustang GT is powered by a 5.0-liter V8 unit with 435 hp and 400 lb-ft (542 Nm) of torque. Each engine is available with either a manual or automatic transmission.
The 2.3-liter EcoBoost engine generates nearly 135 horsepower per liter and more than 139 lb-ft (188 Nm) of torque per liter, being the Ford engine with the best-ever power density. Ford says the EcoBoost-powered model carries fewer than 11.4 pounds (5.17 kg) per horsepower, while the Mustang GT’s weight-to-power ratio is 8.52 pounds (3.86 kg) per horsepower.
That’s because the Mustang EcoBoost has a curb weight of 3,532 lbs (1,602 kg), while the V6 and the GT weigh 3,526 lbs (1,599 kg) and 3,705 lbs (1,680 kg), respectively. The V6 model is actually heavier than its predecessor by 25 lbs (11.3 kg), while the GT carries 87 more pounds (39.5 kg) than the equivalent 2014 model.
The EcoBoost model also has the best-ever weight distribution for a Mustang, with 52 percent of its weight over the front axle and 48 percent to the rear, while Mustang GT has 53 percent of its mass on the front wheels.
Ford says the six-speed manual gearbox has a new shift linkage design for easier engagement and improved precision, with the shift lever now positioned closer to the driver and away from the cupholders, creating a clear path for shifting. The six-speed SelectShift automatic transmission is fitted with wheel-mounted shift paddles with rev-matching downshifts and features a redesigned case with cast-in ribs that help make it stiffer and reduce weight.
No performance figures were offered, except the Mustang GT’s top speed of 155 mph (250 km/h) when fitted with the automatic gearbox.