Only top places from 1988 to date
| 1988 | DTM debut |
| 1989 | 4th place DTM |
| 1990 | 3rd place DTM |
| 1991 | 2nd place DTM |
| 1992 | 1st place DTM |
| 1993 | 2nd place DTM |
| 1994 | 1st place DTM |
| 1995 | 1st place DTM and ITC |
| 1996 | 2nd place ITC |
| 1997 | 1st place FIA GT championship |
| 1998 | 1st place driver and team classification FIA GT championship |
| 1999 | Participated in 24-hour race in Le Mans |
| 2000 | 1st place DTM |
| 2001 | 1st place DTM |
| 2002 | 2nd place DTM |
| 2003 | 1st place DTM |
| 2004 | 2nd place DTM |
| 2005 | 1st place DTM |
| 2006 | 1st place DTM |
| 2007 | 2st place DTM |
| 2008 | 2st place DTM |
