Both both turbos purring, the BMW i8 can produce a whopping 357 horsepower and 420 lb-ft of torque. This means that if you were to stomp your foot on the accelerator your tires will burn out. Still, very impressive for what an electric motor can help produce. Its takes 4.2 seconds for the car to go from 0-60 mph. The head turner tops off at an impressive 155 mph.