DEARBORN, MI - With its powerful and fuel-efficient 3.5L twin-turbocharged V-6 engine, the 365-horsepower Ford F-150 EcoBoost is outselling all other competitive six-cylinder trucks combined, according to the manufacturer.

The new EcoBoost V-6 is one of four new fuel-efficient engines Ford introduced in the F-150 for 2011. Another of those new engines - a 3.7L, 302-horsepower V-6 - also outsells all other competitive V6 engines in full-sized trucks from Chevrolet, GMC, Dodge and Toyota.

According to sales data from J.D. Power and Associates, both new Ford truck V6 engines accounted for 79.5-percent market share of V-6 full-sized trucks sold in July.

The Chevrolet Silverado takes second place with 12.1 percent market share, followed by the GMC Sierra with 4 percent, the Dodge Ram with 3.5 percent and the Toyota Tundra with 0.9 percent. Nissan does not offer a V6 in its Titan pickup.

In July, Ford sold 49,104 F-Series trucks. The EcoBoost V6 accounted for 40 percent of the mix, while the 3.7L took 16 percent of sales. This is the third consecutive month that V-6s have outsold V8s in the F-Series. The last time the V-6 outsold the V-8 in America's most popular truck was 1985. Year to date, the F-Series has sold 313,183 units, 8-percent higher than a year ago.

"Both of our new V-6 powerplants are changing the way customers think about truck engines," said Doug Scott, Ford's truck group marketing manager. "The 3.7L has more horsepower than two of the three V-8 engines we offered in last year's F-150. The 3.5L EcoBoost V-6 engine, at 365 horsepower and 420 lb.-ft. torque, is in a class of its own - no one has anything even remotely close to this engine, which can tow as much as 11,300 pounds and deliver 22 mpg."

Fuel efficiency, along with best-in-class performance, is another reason the two new Ford F-150 engines are rewriting the book on V6 truck sales. The 3.7L F-150 carries an EPA rating of 17 mpg city and 23 mpg highway, while the F-150 EcoBoost is EPA certified at 16 mpg city and 22 mg highway, making it the most fuel-efficient truck with more than 350 horsepower on the market.

The hot-selling F-150 EcoBoost is now the highest volume vehicle in Ford's growing global family of cars, trucks and SUVs available with the company's patented fuel-saving technology.

EcoBoost combines engine downsizing with turbocharging, direct injection and other technologies to deliver both performance and fuel efficiency gains as high as 20 percent over the larger engines they replace. Ford holds more than 125 patents on its EcoBoost technology and has launched a family of EcoBoost engines globally in sizes ranging from 1.6L to 3.5L.

The next two models scheduled to receive EcoBoost engines are two of the company's top-selling utility vehicles, the Edge crossover and the Explorer SUV. Both will offer a 2.0L EcoBoost four-cylinder engine and deliver class-leading fuel efficiency of 30 mpg and 28 mpg highway, respectively. Edge and Explorer EcoBoost go on sale this fall.

Overseas, Ford EcoBoost engines are also a hit, with the 1.6L EcoBoost four-cylinder optional in the European C-MAX multi-activity vehicle virtually sold out. Sales volume is nearly 50-percent higher than projections.