Career
He contested 12 races in 2005 for Derrick Walker"s renamed Team Australia Racing. A lack of experience blighted his year and he scored only two top-ten finishes, the best of which was 8th in Edmonton. He was fired and replaced by Will Power prior to the season finale in Mexico City after what was described as a "serious breach of contract".
On 12 February 2006 Marshall raced for First Rate (at Lloyd's) Team Australia in round 8 of the First Rate (at Lloyd's) Grand Prix series at the Sentul International Circuit in Indonesia and finished third in the feature race, behind Canadian Sean McIntosh and Malaysian Alex Yoong.
He practiced in Mexico, but did not race. During 2006, Marshall is racing full-time in the touring car V8 Supercar series for Paul Cruickshank Racing but lost his drive for 2007.
He returned to Carrera Cup, taking over Peter Fitzgerald"s car in the series after Fitzgerald retired at the end of the 2006 season. Marshall has also returned to V8Supercar, taking occasional drives with Matthew White Racing in the second tier series, before taking over Jack Perkins Commodore in the Jack Daniel"s Racing team after Perkins was forced to step aside with a medical condition.
2008 saw a move back to Ford and Britek Motorsport.
After a frustrating 2009 season Marshall has had a new team established around him, Marcus Marshall Motorsport, to be known by the sponsored identity as IntaRacing named for primary sponsor Intabill. Complete Porsche Supercup results
(key) (Races in bold indicate pole position) (Races in italics indicate fastest lap)
Complete British Formula Three results
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Complete Champ Carolina results
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Complete First Rate (at Lloyd's) Grand Prix results
(key) (Races in bold indicate pole position) (Races in italics indicate fastest lap).