Volkwagen may expand further after its acquisition of Porsche, claimed chairman Ferdinand Piech last night.

On the eve of the Frankfurt Motor Show, Piech told a Bloomberg reporter it may expand to a dozen brands. VW Group's takeover of Porsche takes its brands to 10.

However chief executive Martin Winterkorn said it has no interest in a takeover of Suzuki Motor Corporation, calling it a "nice little company".

VW is reportedly considering a partnership with Suzuki to improve its line-up of small cars.