Yes there a fair bit of variation, I think Tesla Model 3 and Hyundai Ioniq get best economy 4 miles/kWh and above. The Tesla model X P100D ~2.5 miles/kWh and I think the Jaguar Ipace is also around the 2.0 miles/kWh range being a larger SUV. Obviously depends on how you drive them as well 
In addition to miles/kWh, its also common to use, Wh per mile or Wh per km. 4 miles/kWh = 250 Wh per mile or 155 Wh per km.