Audi has unveiled its first factory-entered Formula E car ahead of the 2017/18 season, and has given it the e-tron name previously used on its LMP1 machines.
The Germany manufacturer's works entry into the electric single-seater series comes after two years as a supporting name to the Schaeffler-backed Abt operation.
Audi's e-tron FE04 will utilise a single-speed gearbox as part of what Audi motorsport boss Dieter Gass called "a completely new powertrain".
The e-tron FE04's livery is a significant departure from last season's red, yellow and green design.
Now the car features a white base with green, a nod to technical partner Schaeffler, and black additions.
Reigning FE champion Lucas di Grassi, who drove the car onto the stage at Audi's official launch event on Wednesday night, will adopt the number one for the coming season.
His car will be adorned with Audi's famous four rings logo atop a black rear wing and a white rollhoop.
Teammate Daniel Abt has been retained and elevated to factory Audi driver status – his car is differentiated by a red tip on the nosecone, as well as a red rollhoop and rear wing.
Audi board member for technical development Peter Mertens stressed the significant of Audi becoming "the first German automobile manufacturer to compete in Formula E", with rivals BMW (2018/19) and Mercedes (2019/20) committing to later entries.
He also said the e-tron moniker, given to its R18 LMP1 machines from 2012, was to link the racing car to Audi's family of electric and hybrid road cars.
Gass added: "Together with our technology partner Schaeffler, we have developed a completely new powertrain.
"You can immediately tell this by looking at the new carbon housing. The car also sounds different because we're pursuing new avenues in technology."