The 2014 BMW i3 with Range Extender is available with a range-extender, which maintains the charge of the lithium-ion battery at a constant level enroute, as soon as it falls below a specified value.
This is performed by a 650cc two-cylinder gasoline engine with 34 hp (25 kW), mounted adjacent to the electric motor above the rear axle. The range extender increases the car’s maximum range in day-to-day driving to around 300 kilometers (186 miles).
All BMW i3 models feature a large number of technological innovations – such as a carbon-fiber passenger cell and a chassis made of aluminum – and sets new standards in the field of lightweight construction.
The car’s electric drive-train generates output of 125 kW/170 hp and peak torque of 250 Newton meters, which is immediately available from a standing start. The BMW i3 sprints from 0 to 60 km/h (0-37 mph) in 3.7 seconds and from 0 to 100 km/h (0-62 mph) in 7.2 seconds. Its top speed is limited to 150 km/h (93 mph) for efficiency reasons.
Charging takes three hours over a 220-volt line and into a massive 7.4 kW on-board charger, one of the largest on the market. BMW claims that charge time can be reduced to 30 minutes using an optional DC Combo Fast Charging setup.
BMW had announced in July that the all-electric BMW-i3 will start at $41,350, plus a $925 delivery fee, before any Federal, state, or local incentives.