Donohue finished the 2012 GRAND-AM Rolex Sports Car Series season fourth in DP and was the second-highest Corvette Daytona Prototype driver. This season marked Donohue’s tenth consecutive season driving in the top level of the Rolex Series. In 2009, he won the Rolex 24 at Daytona with Darren Law, Buddy Rice and Antonio Garcia. That victory came on the 40th anniversary of his father’s 24 hour win in 1969. 

“2012 has been one of my most challenging seasons,” said Donohue. “While it is very rewarding to have finished fourth in a field of some of the best in this business, I believe it has come time for me to leave the team that I have driven with for the last ten seasons. My father only drove for one team during his entire career so this is a difficult decision, but ultimately it is the best for me.

"I want to thank all of my teammates, both drivers and crew, for their hard work and tireless dedication. It has been an honor and a privilege to have worked with so many fine people.”

For the first four races of the season Donohue anchored Action Express Racing's effort along with Darren Law in the No. 5 Action Express DP. Four different co-drivers shared the car with Donohue in the next nine races with a second place finish at Belle Isle Park marking the season’s best finish.