Sketches show both a three-door hatch and four-door sedan variants as well as giving us an idea of the future cockpit.

Audi has released five new teaser sketches of the upcoming next-generation 2013 A3 model.

The sketches show what both a three-door hatch and a four-door sedan variant of the next A3 will look like. Hints have also been divulged of the car's future cockpit.

The next-generation A3 will need that four-door variant for the sedan-friendly U.S. and Chinese markets. And the A3 sedan will likely grow in size too. Autocar reports that it will have a wheelbase of 2630mm (103.54 inches) wheelbase, 35mm (1.38 in) longer than the three-door bodystyle. It is also expected to be wider and lower, but that could be in comparison with the current generation, and not with the sedan's 2013 three-door hatch sibling.

The next A3 will also feature a hybrid, plug-in hybrid and all-electric drivetrain options as well as the usual crop of petrols and diesels.

Expect the three-door next-generation Audi A3 to debut at the 2012 Geneva auto show with the sedan, and other versions, to follow later in that year.

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Audi previews 2013 A3 range