Source: Road and Track
Writer:Mike Monticello
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2009 Frankfurt Auto Show Preview: BMW Vision EfficientDynamics concept</span>
As a plug-in full hybrid with a turbodiesel engine, upward-pivoting doors and radical styling, BMW's 4-seat Vision EfficientDynamics concept car — which is headed for the Frankfurt auto show — is packed with technology enabling it to be both frugal and fast.
The concept's two electric motors (one at each axle, giving the car all-wheel drive in electric mode) are powered by lithium-polymer batteries that reside in a chassis element situated from front to rear in the middle of the car. The Vision EfficientDynamics concept can be driven up to a claimed 31 miles in EV mode, while the batteries can be recharged in just 2 ½ hours when plugged into a 220-volt outlet.
The rear/mid-mounted 1.5-liter 3-cylinder turbodiesel puts out 163 bhp and 214 lb.-ft. of torque, sent to the rear wheels via a 6-speed version of BMW's DCT twin-clutch gearbox. Combined with the electric motors, the total system output is 356 bhp and 590 lb.-ft. of torque, giving a level of performance that BMW says is "superior to anything provided so far by a hybrid vehicle."
Due to the car's huge power and relatively low (for a hybrid) curb weight of 3076 lb., BMW claims the Vision EfficientDynamics concept would be capable of hitting 100 km/h (62 mph) in 4.8 seconds, and could easily exceed its electronically limited top speed of 155 mph.
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