One BMW 3 Series, but two separate models. Why is it more important that one’s slipperier than the other? 🤔 BMW has launched the all-electric i3, whose 0.21 drag coefficient is around 20% better than the 0.26Cd of the petrol-powered M350 xDrive ⚡️⛽️ Here’s why that’s important 😅 ̇es