2013 Volkswagen Jetta Hybrid Debuts At Detroit Auto Show

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While Volkswagen has been selling its large Touareg Hybrid sport-utility vehicle for a couple of years now, most VW buyers still have no idea the company offers hybrid vehicles.

That's about to change, with the introduction of the 2013 Volkswagen Jetta Hybrid at the Detroit Auto Show.

The Jetta Hybrid gives VW a new fuel-economy champ in the Jetta lineup, with even better figures on gasoline than the well-known Jetta TDI clean-diesel model delivers using diesel fuel.

Volkswagen says its new hybrid will be "the most fuel-efficient Jetta in the lineup" and deliver an estimated combined gas mileage rating of 45 mpg. 

In other words, it handily beats the clean-diesel Jetta TDI--rated at 30 mpg city, 42 mpg highway, for a combined 34-mpg rating--which was formerly the gas-mileage champ in the Jetta range.

Smallest engine yet

The power comes from the smallest engine VW has ever used in a Jetta, a 150-horsepower 1.4-liter turbocharged four.

It's mated to a seven-speed dual-clutch direct-shift gearbox--the first one used in any hybrid, VW points out--with a 20-kilowatt (27-hp) electric motor sandwiched between the engine and transmission.

VW says that at 163 pounds, the DSG is lighter than a conventional automatic transmission. So is the engine, for that matter, which weighs in at just 216 pounds. Together, the engine and transmission go a long way toward making up for the added weight of the electric motor, battery pack, and power electronics added to the Jetta.

Total weight increase was only 221 pounds, according to VW, meaning the entire car weighs only about 3,300 pounds. The air-cooled 1.1-kilowatt-hour lithium-ion battery pack is located behind the rear seat.

Regenerative braking is aided by a clutch that decouples the engine from the drivetrain when the drive lifts off the gas, meaning that energy formerly wasted in engine drag can be recaptured to recharge the battery if the driver brakes.

Otherwise, the car can "coast" without engine drag at speeds as high as 84 mph, with fuel to the engine shut off--further increasing efficiency.

Fastest compact hybrid?

Volkswagen says the Jetta Hybrid can be driven up to 1.2 miles in electric-only mode, at speeds up to 37 mph (or 44 mph if the "Eco" mode is engaged).

Volkswagen is pitching the 2013 Jetta Hybrid as the fastest compact hybrid on the market, with a 0-to-60-mph time of less than 9.0 seconds. Problem is, the number of compact hybrids is small.

There's the 2012 Honda Civic Hybrid, with a combined gas mileage rating of 44 mpg, and ... well ... the upcoming 2013 Toyota Prius C. That's about it right now. So VW is claiming the Jetta Hybrid will be the best in a class of three.

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