With a higher price tag (US$ 128,500, against US$ 109,000 of the regular Roadster), the car has received a stronger engine. It now produces 292 bhp, a 42 bhp increase over the 250 bhp powerplant of Roadster. It allows the sportscar to sprint from 0 to 100 km/h in 3.7 s.
No info has been released on an increase in top speed or on a lower range. Only about the price and the fact that the people that are waiting to receive their Roadster cars (over 1,000 people) can upgrade them to the Sport version. With a US$ 19,500 addition.
This new powertrain will be the same one used by Model S, a five-seat sedan that will be released in 2011. Probably to compete with Fisker Karma, which has price tag that is much lower than Roadster's. This electric car competition will be very interesting.