The BMW i3 has been spied once again ahead of an official launch programmed for July 29.

The BMW i3 has been spied once again ahead of an official launch programmed for July 29.

Judging by the previous spy photos we published last week, this is the hybrid version equipped with a range-extending engine. It will allegedly make use of a 0.65-liter, two-cylinder motorcycle engine and provide a total range of 186 miles (300 km), a lot more than the pure electric which is estimated to have a range between 88 miles (130 km) and 99 miles (160 km).

Although we can't see from these photos, the right side of the car has two caps which indicate there's a gas tank. Another difference between the EV and the REx variant is the different alloy wheel design which looks more attractive on the range-extender.

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