According to the official V8 Supercars website,[1] Crompton has competed in 357 various motor racing events, finishing in the first three places on 58 occasions.
He has raced at Mount Panorama in Bathurst, New South Wales on more than 20 occasions dating back to his 1988 debut with Peter Brock's Mobil BMW Team.
Crompton's first big break in motor sport came when he was selected by Peter Brock as a driver in the Holden Dealer Team's second Group A VL Commodore for the long-distance races in late 1987.
[2] At the end of the year he drove in the Tea Tree Trophy Formula Holden support race at the 1989 Australian Grand Prix in Adelaide.
With the team short of funds to run two Holden VNs, Crompton left the team mid-season and returned to the Seven commentary booth, though he did drive in the final round of the 1992 Australian Drivers' Championship at Oran Park in Sydney where he finished in third place behind two future television co-commentators, series champion Mark Skaife and runner up Mark Larkham.
In a race marred by heavy rain, accidents, and the death of 1967 Formula One World Champion Denny Hulme from a heart attack, Crompton and his Swedish co-driver Anders Olofsson finished 3rd in the crash shortened race, with Crompton giving the unruly crowd the finger from the podium on national television.
In 1997 Crompton headed to the US to compete in the new North American Touring Car Championship in a Honda Accord run by the Tasman Motorsports team.
Crompton was quickly on the pace, and won several races and was in contention for the championship, before a disqualification (which he still disputes) precluded him from winning the title.
Most recently he finished 17th in the 2009 Bathurst 12 Hour race, completing 222 laps (1,379 km / 857 miles) driving a Mitsubishi Lancer Evolution X with Glenn Seton.
Crompton also competed in the 2003 Bathurst 24 Hour driving a 5.0 L V8 powered BMW M3 GTR for Australian Nations Cup Championship team Prancing Horse Racing.
The car (co-driven by John Bowe, Greg Crick and Maher Algadrie), which had only arrived from the United States a week before the race, qualified in 3rd place but failed to finish after Algadrie hit the wall on top of Mount Panorama following a clash with the race winning Holden Monaro 427C of Peter Brock on its 131st lap.
He would stay with the network in a gradually decreasing capacity (mostly due to his racing commitments) until the end of 1995, his latter years there including regular segments on the TV program The Great Outdoors.
In 1996 he returned to Network Ten to be their "motorsport expert" for their coverage of the CART Series & Australian Super Touring Championship for which they had just gained the broadcasting rights, and which would also end up including Formula One.
Crompton's detailed technical knowledge, combined with his racing and commentating experience, ensures that he is considered an extremely valuable part of the Seven Network's coverage of the series.
The series, of which he is also the executive producer, features Crompton interviewing several major figures from the history of touring car racing in Australia.