| Race details | |
|---|---|
| Race 4 of 18 in the 2003 CART season | |
 Brands Hatch Indy Circuit Layout | |
| Date | 5 May, 2003 |
| Official name | The London Champ Car Trophy |
| Location | Brands Hatch Indy Circuit, West Kingsdown, Kent, England, United Kingdom |
| Course | Permanent Road Course 1.192 mi / 1.918 km |
| Distance | 165 laps 196.680 mi / 316.470 km |
| Weather | Partly Cloudy |
| Pole position | |
| Driver |  Paul Tracy (Forsythe Racing) |
| Time | 37.006 |
| Fastest lap | |
| Driver |  Adrian Fernández (Fernández Racing) |
| Time | 38.210 (on lap 152 of 165) |
| Podium | |
| First |  Sébastien Bourdais (Newman/Haas Racing) |
| Second |  Bruno Junqueira (Newman/Haas Racing) |
| Third | Mario Domínguez (Herdez Competition) |
The 2003 London Champ Car Trophy was a Championship Auto Racing Teams (CART) motor race held on 5 May 2003 at the Brands Hatch Indy Circuit in West Kingsdown, Kent, England in front of a crowd of just under 40,000 spectators. It was the fourth round of the 2003 CART season, the first American open wheel car race at the track since 1978, and the first of two European races of the season. Sébastien Bourdais of the Newman/Haas Racing team won the 165-lap race after he started from the second position. His teammate Bruno Junqueira finished second and Mario Domínguez of Herdez Competition took third.
Paul Tracy won his first pole position in three years by posting the fastest lap in qualifying and he maintained the lead for the next 54 laps before entering the pit lane for fuel and tyres. Bourdais remained on the circuit for one extra lap because he had conserved fuel and had a faster pit stop than his teammate, who was delayed by the slower car of Rodolfo Lavín, to take the lead. Bourdais and Tracy exchanged the fastest lap of the race as they stayed within a second of each other until Tracy's engine failed on the 118th lap. Bourdais was unchallenged for the remainder of the race as he scythed his way past slower traffic to achieve his first CART victory. There were two cautions and three lead changes amongst three different drivers during the course of the race.
The final positions meant Tracy still led the Drivers' Championship with 65 points but Junqueira lowered it to eleven points. Michel Jourdain Jr. maintained third position with fellow Mexican Adrián Fernández remaining in fourth place and Patrick Carpentier fifth. With 88 points, Lola increased their Constructors' Championship lead over Reynard to 54 points with 14 races left in the season.