Concept Vision Efficient Dynamics
he Vision Efficient Dynamics concept car is a plug-in hybrid with a three cylinder turbodiesel engine.[3Additionally, there are two electric motors with 139 horsepower. It allows an acceleration to 100 km/h (62 mph) in 4.8 seconds and an electronically limited top speed of 250 km/h (160 mph)According to BMW, the average fuel consumption in the EU test cycle (KV01) is 3.76 liters/100 kilometers, (75.1 mpg imp), and has a carbon dioxide emission rating of 99 grams per kilometer (1,3 l/100km and 33g CO2/km ; EU-PHEV ECE-R101). The estimated all-electric range is 50 km (31 mi), and the 24-litre diesel tank extends the total vehicle range to up to 700 km (430 mi). The lightweight chassis is made mainly from aluminium. The windshield, top, doors and fenders are made from polycarbonate glass, with the body having a drag coefficient of 0.22.
Pre-production versionThe BMW i8 concept plug-in hybrid electric vehicle unveiled at the 2011 Frankfurt Motor Show has a 7.2 kWh lithium-ion battery pack that allows an all-electric range of 35 km (22 mi). Its top speed is electronically limited to 250 km/h (160 mph) and is expected to go from 0 to 100 kph (0 to 60 mph) in 4.6 seconds. Under normal driving conditions the i8 is expected to deliver 80 mpg-US (2.9 L/100 km; 96 mpg-imp) under the European cycle. A full charge of the battery will take less than 2 hours using 220V.
The i8 combines the electric drive system of the BMW i3, with a 96 kW (129 hp) electric motor located in the front axle powering the front wheels and at the rear is a turbocharged 1.5-liter 3-cylinder gasoline engine producing 164 kW (220 hp) and 300 Nm (221 lb-ft) of torque. The result is a combined output of 260 kW (349 hp). All four wheels provide regenerative braking. The location of the battery pack in the energy tunnel gives the vehicle a low centre of gravity, enhancing its dynamics. Together with the positioning of the motor and engine over the axles, the result is an optimum 50/50 weight distribution.