BMW i8 Roadster Debuts with Electric Powertrain Updates

BMW unveils the i8 Roadster along with motor and battery upgrades for the i8 Coupe

The long awaited i8 Roadster features a soft top that packages away in 15 seconds and up to speeds of approx. 31mph. A slight gain of weight reduces the updated system’s electric only range from 34 miles for the Coupe to 33. Motor improvements allow for a higher  electric-only top speed.

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