We have the 2017 Premium Plus version and have kept meticulous records of range. From Spring, through Summer, and into Fall, as long as daytime temps remain above 60 degrees F, you can count on 18 to 20 miles electric range. If you use the heater or drive well above 65mph on the freeway, you can count on losing 10-15% range. Unfortunately, when you encounter Winter temperatures, Audi does not actively preheat the battery pack like Tesla and a few other manufacturers. We have noticed drops in range in the winter of as much as 30-35%. You can improve winter range partially by turning on Auxiliary Climate Control while still connected to your wall EVSE/charger. This will heat the car interior and partially heat the battery pack, though not significantly. This is one of the major weak spots of the A3 Sportback e-tron, in addition to the small battery pack. Euro business class vehicle tax and licensing fees now demand 30+ mile PHEV ranges, which is one reason why our Audi production was cancelled. VW had been testing higher amp-hour batteries in the GTE PHEV, which would fit easily into the Sportback e-tron, giving it a 32-35 mile range, BUT, the A3 is to have a new chassis and body in a few years, so Audi/VW decided to drop the car, instead of spending a little more to give it reasonable PHEV electric range. We do love our car, but are not thrilled with Audi USA or Audi Deutschland.