2003 British Touring Car Championship

Reigning champions Vauxhall cut down to three Astra Coupes by axing its Egg Sport squad and entering three VX Racing-liveried cars, run once again by Triple 8.

Matt Neal replaced Andy Priaulx (who left to contest the European Touring Car Championship with BMW) after moving from Vauxhall, and teenager Tom Chilton filled the third seat after an impressive debut year in the Barwell Motorsport-run Astra.

[2] With Breeze now in Pyper's car Paul Wallace switched from GA's production Alfa Romeo to a second Astra which the team had entered for Gareth Howell at Silverstone after a failed attempt to hire 2001 Champion Jason Plato.

A Peugeot 306 GTi and a second 307 joined the Varta line-up midway through the season together with Jay Wheals and Richard Marsh, and each of the four drivers raced more than one of these chassis across the remainder of the year.

However, Ryan withdrew after an expensive crash in the second round at Brands Hatch, and Wallace was called up to the team's Touring class assault mid-season.

The Drivers' Championship was won by Yvan Muller .
Mandatory pit stops became a feature for all races in the 'Touring' class