What Car? says...
Put simply, the Audi Q4 Sportback e-tron gives you less for more. Despite having a higher price than the regular Q4 electric SUV, its body is lower, and therefore not as spacious inside.
That might sound like a bum deal, but the sleeker roof means the Q4 Sportback uses less electricity to punch itself through the air, increasing the range by a not inconsiderable amount.