As discussed in the media it looks like the new Tesla Model 3 Long Range scores in at 126 MPGe, what is a very good second place, just behind the Hyundai Ionic which does incredible 136MPGe.
Next are cars like the BMW i3 with 118MPGe, the Nissan Leaf with 112MPGe and about 30% less efficient then it’s smaller sibling – but also another car class – the Tesla S with 98MPGe.
A comparison chart can be also found on fueleconomy.gov.