In addition, the 2007 Prius gains standard driver and front passenger seat-mounted side airbags and front and rear side curtain airbags, which were previously optional. The new 2007 Prius Touring Edition provides more spirited driving responses due to its European-tuned suspension and 16-inch alloy wheels. The Prius Touring Edition is distinguished externally by the new wheels, a larger rear spoiler, High Intensity Discharge (HID) headlamps and integrated fog lamps. Toyota Prius is the most fuel-efficient midsize sedan in America, delivering on the promise of exceptional fuel efficiency without compromising performance, comfort or safety. For 2007, a new Camry Hybrid joins the Prius and Highlander Hybrid SUV in the Toyota lineup. Last year, Toyota boosted Prius production to keep up with demand for this innovative hybrid model."Prius was already the most successful hybrid car in the market, and the rising gasoline prices seen in 2006 have only added to its appeal," said Jim Lentz, Toyota Motor Sales, U.S.A. executive vice president. "Toyota is the market leader in hybrid vehicles, and we are committed to expanding this technology."Prius provides the best fuel efficiency ratings of any midsize car sold in America, with estimated EPA ratings of 60 mpg in city driving, 51 mpg on the highway and 55 mpg in combined driving. The seemingly "reversed" city/highway figures reflect the unique powertrain that is optimized for maximum efficiency in the kind of slow-and-go driving that urban commuters experience.Prius achieves its remarkable fuel efficiency while providing the kind of performance customers expect from a four-cylinder, automatic transmission midsize car, with zero-to-60 mph acceleration in about 10 seconds.
Hybrid Synergy Drive:
The current Prius was the first Toyota product to employ Hybrid Synergy Drive, the company's third-generation gas-electric hybrid powertrain technology. Hybrid Synergy Drive is defined as a "full hybrid system," which means it is capable of operating in gas or electric modes, as well as a mode that combines the power of the gas engine and electric motor.In the Prius, Hybrid Synergy Drive combines a 1.5-liter four-cylinder Atkinson Cycle gasoline engine and an electric drive motor. The gasoline engine produces 76 horsepower and 82 lb.-ft. of torque. As on all other Toyota passenger car engines, Variable Valve Timing with intelligence (VVT-i) helps to optimize power delivery across the engine speed range.The permanent-magnet electric drive motor produces its maximum power of 50 kW (67 horsepower) from 1,200-1,540 RPM, and peak torque of 295 lb.-ft. from 0-1,200 RPM. The Prius produces 110 combined horsepower with its gas engine and electric motor.The electronically controlled planetary gear-type continuously variable transmission does not have fixed gear ratios, but rather provides infinitely variable ratios in response to driving conditions. A regenerative braking system further boosts system efficiency: when the Prius is coasting or the brakes are applied, the electric motor functions as a generator, capturing kinetic energy that would normally be lost as heat through the brakes and transforming it into useable electricity to recharge the batteries.
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