ASTRONOMER Sir Patrick Moore is the star of Citroen's latest TV commercial. In the 30-second advert he has to select a winner in the "space challenge" between the Xsara Estate, C5 Estate and the Xsara Picasso.

Armed with a magnifying glass and tape measure, Patrick Moore is prompted to investigate the spacious credentials of each vehicle before being asked to make a final decision based on the issues of space and value for money. His reply is a resounding, "I have absolutely no idea", since each of the offers is equally attractive. The advert continues the Citroen Challenge theme.

This latest promotion sees a range of offers including cashback deals, free insurance and sky-high value with estates at the price of saloons and diesels for the same price as petrols. The models featured in the advert are the Xsara 1.6 LX Estate at £10,475; the Xsara Picasso 1.6i SX at £11,995; and the C5 1.8 LX Estate at £12,995.