According to AutoExpress, Audi is reportedly looking to fill the city car hole in their lineup with a version of the VW up!. The UK mag's even mocked up what they think an Audi version of the sub-sub compact would look like in a color that appears to be... yes, lime green. The Audi would get the same engine lineup expected to fit under the hood of the VW up!. In fact, we're hearing there may only be one difference between the two — as always, it's what's inside that counts.

Autoexpress expects to see available gas and diesel 600-cc two-cylinder engines and the VW corporate 1.2-liter inline-three. The Audi difference will likely be most apparent on the inside, where the company's up! iteration would receive high-line trim and amenities. Of course, don't hold your breath waiting for anything equipped with a diesel two-cylinder to hit our shores anytime soon. Frankly, now that Porsche owns both companies, we'll wait for a Bruce-d up version. [AutoExpress via World Car Fans]