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Raised in Michigan’s Upper Peninsula, Scott Diehl gained a passion for motorsports and the automotive industry at a very young age. After graduating high school, Diehl attended Ferris State University studying Automotive and Heavy Equipment Technology.
Following college, Diehl took up residence in Holt, Michigan and began piloting a Modified at Spartan Speedway while working for Fedewa’s Racing Supply.
As a driver, Scott was a natural and enjoyed success almost immediately picking up the 1987 Spartan Speedway Championship. Even though Scott was a quick study behind the wheel, his passion for the sport was more focused on a behind-the-scenes role where he worked closely with Tim Fedewa as he built his career in the no.66 ARTGO car. By the end of the 1989 season Scott hung up his helmet to focus on turning wrenches and getting the very most out of the cars he was working on.
For two seasons Scott worked with Tim Fedewa fielding cars in what is now known as the Xfinity series picking up one series win in that timeframe.
In 1996 Scott took an opportunity with Roush racing working on the no.99 Cup car driven by Jeff Burton. Between 1996 and 1998 the team captured five Cup wins with Burton as the pilot, although Diehl was already enjoying success and a career at the pinnacle of stock car racing, in 1999 he made a decision that forever changed the trajectory of his career when he moved to Joe Gibbs Racing.
From 1999 to 2005 Diehl served as the Car Chief alongside Crew Chief Greg Zipadelli and Driver Tony Stewart on the no.20 NASCAR Cup car. During Scotts tenure with JGR they captured 24 NASCAR Cup wins and 2 (two) NASCAR Cup Championships (2002 and 2005).
In 2006 Scott left the competition side of Joe Gibbs Racing to work in the lubrication side of the Gibbs franchise.
Coming back to his Michigan roots, Diehl now calls Fenton, Michigan home and is currently the Sales Manager for Joe Gibbs Driven Racing Oil.