Last week, our spies spotted a prototype of the Audi e-tron GT tearing up the Nurburgring. This wasn't the only new electric model Audi has been evaluating recently, however, as the German automaker has now been caught testing two Audi Q4 e-tron prototypes at the Austrian Alps. One of them is a standard Q4 e-tron, but the other provides our first look at the more stylish Q4 e-tron Sportback, which was previewed back in July by the Audi Q4 e-tron Sportback Concept. This will be Audi's fouth electric model after the e-tron, e-tron Sportback, and the upcoming Q4 e-tron.

Just as we've seen on other Audi Sportback models, the Q4 e-tron Sportback has a coupe-style roofline that makes it more stylish but less practical than its standard sibling.

Both models will be positioned below the Audi e-tron and e-tron Sportback electric SUVs. While the prototype is fully disguised in camouflage, it's clear that the production model will look a lot like the concept shown in the summer. Everything from the LED headlights and connected rear taillights, to the bumpers and design lines appear to be carrying over to the production model.

In terms of dimensions, the Q4 e-tron Sportback concept measured 15.1 feet long and 5.2 feet high, with a 9.1-foot long wheelbase. When the Q4 e-tron Sportback concept debuted, it packed an 82 kWh battery capable of providing 280 miles of range based on the WLTP test cycle. This will increase to 311 miles for rear-wheel-drive models.

With a fast charger, 80 percent of the electric SUV's be recovered in 30 minutes. As battery technology continues to evolve, the production model could potentially offer a longer range.

Our spies didn't manage to snap any photos of the interior, but the concept's cabin was equipped with a large 12.3-inch touchscreen and an Audi virtual cockpit display behind the steering wheel. Thanks to its battery packaging, the Q4 e-tron Sportback will offer front and rear legroom comparable to a rival midsize SUV.

Audi hasn't announced a debut date yet, but the Q4 e-tron Sportback is expected to go on sale for the 2021 model year alongside the regular model.