Wearing a big wing, an ankle-breaking splitter, angry bonnet nostrils and a camouflage wrap.

Ford Australia has offered the first peek at its upcoming Mustang Supercar, the replacement for its long-serving Falcon, during testing.

The car undergoing testing is being developed by DJR Penske, Tickford Racing, Ford Performance and Ford Australia, and was driven by current Supercars Championship leader, Scott McLaughlin.

It'll be competing in the Supercars Championship next year, going head-to-head with the Holden Commodore. Although it wears Mustang body panels, badging and graphics, the car is actually built around a control chassis – designed to make sure the competition stays relatively level.

Tweaked proportions aside, there's certainly no missing the car, with its gigantic rear wing and ankle-breaking front splitter. Those bonnet nostrils looks pretty mean, too.

According to Ryan Story, DJR Team Penske manager, the test outing was a "very productive day".

“While the Mustang tugs at your emotions, the reality for us is that we have a job to do, and we have to get this right for the teams, the championship," he continued.