Jason Cammisa of Road & Track magazine recently took the BMW i8 to Willow Springs to put it through a series of instrumented tests. The results, as posted by Road & Track, show that the BMW i8 is even more capable than BMW's official figures show.
For example, BMW lists the official 0 to 60 MPH time for the BMW i8 at 4.2 seconds. Road & Track crushed that time with a 3.8-second blast from 0 to 60 MPH.
Note the "EV" figures posted by Road & Track too, including 0 to 60 MPH in 9.4 seconds.