Driving as fast as possible isn't the only goal in Formula E - efficiency is key, so we've gone behind the scenes with Mahindra Racing, as well as created exclusive 3D animations of the Formula E's powertrain to take a look at how they've built their car, and see what Racing Driver Alexander Sims thinks about driving this year's machinery.

0:00 Formula E Powertrains - Old Vs New
1:00 Alex Sims and Wheel-To-Wheel Racing
1:32 How The Powertrain Works
2:19 Alex Sims and Mahindra's Latest Developments
2:53 Building The Powertrain
3:47 Alex Sims and Efficient Racing
4:50 What Are E-Fluids?
5:14 How Do E-Fluids Affect The Car?
6:05 Formula E Affecting Road Car Development

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