Jeremy Clarkson makes a film about the BMW X6 and ends up conducting one of the most expensive road tests in Top Gear history. James May drives the new Vauxhall Insignia VXR, accompanied by Margaret Calvert, the designer of Britain's road signs and Richard Hammond tests the 340,000 pound Lexus supercar on the Top Gear track. The star in a Reasonably Priced Car is blues musician Seasick Steve.

This week, Matt, Chris and Eddie Jordan take music stars Sharleen Spiteri, Seasick Steve and Tinie Tempah on the ultimate SUV test in wildest South Africa.

Back at the track, F1 superstar Jenson Button gives Chris a ride in the McLaren 675LT, while actor Damian Lewis is this week's Star in a Rallycross Car.