All-electric crossover coupe previewed in shadowy YouTube clip ahead of its full reveal in Geneva on March 5.

Audi has posted a new teaser video for the Q4 e-tron concept ahead of its full reveal at the Geneva motor show later this week.

Scheduled to be unveiled on March 5 at 8:00am Central European Time (6:00pm AEDT), the Q4 e-tron concept will be an all-electric preview of the newest member of Audi's crossover family, with a production model slated for a late 2020 or early 2021 launch.

The new video follows the set of designer sketches that the company sent out last month, depicting a sportback-styled SUV that should serve as the style-focused companion to the new-generation Q3, the same way the Q8 is the swoopier lifestyle-oriented version of the more practical Q7.

Power in the Q4 e-tron concept will come from an all-electric powertrain, hence the 'e-tron' moniker, but it's likely combustion-powered versions will also be available when the new model hits the market.

Further details are few and far between at this stage, so we'll get the full run-down when the Q4 e-tron is revealed later this week.

Stay tuned to CarAdvice for all the latest.