Up until now, we've seen plenty of spy shots of BMW's upcoming i8 plug-in hybrid halo car out doing cold weather testing in the snowy backdrop that is northern Sweden. That's all well and goodm but what we're more anxious to learn more about is how well it'll perform on the track . Fortunately BMW has been putting the car through what is likely its finally testing stages at the Nurburgring and our spy photographers were on hand to capture the event.

Powered by a turbocharged 1.5-liter three-cylinder gasoline engine that sends 223 horsepower to the rear wheels, with an electric motor pumping an additional 170 hp to the front wheels, the i8 packs a combined 393 hp and 406 lb-ft of torque. Expect to see the i8 make the sprint from 0-62 mph in about 5 seconds flat, with an electronically-controlled top speed of 155 mph. BMW is also claiming the i8 will return some 80 mpg, which is quite impressive considering its overall performance numbers. Expect to see BMW reveal the highly-anticipated i8 this September at Frankfurt.