In 2005 he competed for the rookie-of-the-year title in Champ Car, driving for Dale Coyne Racing. He had a difficult time coming to grips with the series, with no less than five different team-mates over the course of the year. His best finish was 8th in Denver. Alexandre also contested occasional Champ Car events from 2003 to 2005.
| Year | Entrant | Chassis | Engine | Tyres | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | DC | Points |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2001 | Petrobras Junior | Lola B99/50 | Zytek V8 | BRA Ret | SMR 14 | ESP 19 | AUT Ret | MON 5 | EUR 3 | FRA 13 | GBR 11 | GER 3 | HUN 7 | BEL 1 | ITA 3 | 5th | 24 | |
| 2002 | Petrobras Junior | Lola B02/50 | Zytek-Judd KV | BRA 7 | SMR 14 | ESP 9 | AUT 8 | MON 5 | EUR 2 | GBR 3 | FRA 15 | GER 6 | HUN 5 | BEL 3 | ITA 4 | 5th | 22 | |
| 2003 | Coloni | Lola B02/50 | Zytek-Judd KV | SMR 3 | ESP Ret | AUT 1 | MON DSQ | EUR 14 | FRA 3 | GBR 4 | GER 1 | HUN Ret | ITA 3 | 2nd | 43 |
| Yr | Team | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | Rank | Points |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2005 | Dale Coyne Racing | LBH Ret | MTY Ret | MIL 14 | POR 13 | CLE 9 | TOR Ret | EDM 10 | SAN Ret | DEN 8 | MTL Ret | LAS 15 | SUR 9 | MEX Ret | 17th | 92 |