“Audi has three plug-in hybrid drivetrains under development, all based around a common electric drive arrangement that uses a 110bhp electric motor housed within the gearbox casing. Engines to be mated to the technology include the 220bhp 2.0-litre petrol, 180bhp 2.0-litre diesel and a 250bhp version of the supercharged 3.0-litre V6.”

We see no reason why Audi needs 3 plug-in A4s, as one will surely suffice.  The more the merrier though, right?