The E-Tron GT is plenty sporty in its standard form, but the available RS version adds power and performance. This combination produces 598hp as standard, but a two-second overboost function ups this to 646hp when you launch the car. As a result, we blasted the car from 0-62mph in just 3.0 seconds. Perhaps a more relevant acceleration time is the one from 30-70mph, which you tend to use when overtaking or accelerating down a slip road. The RS e-tron GT covered it in a mind-boggling 2.7 seconds.