Speaking on Sky Sports, McLaren team principal Andrea Stella said Dunne was “diligent and impressive” in his approach to the session, which included testing the new upgrades on the McLaren.
“He also had the chance to show some speed, and it’s no surprise as he’s a fast driver,” Stella added.
“I think we need to be a bit careful looking at the lap times because his lap time came later on in the stint when the fuel was down.
“But it was encouraging and impressive, in terms of Alex himself and it was a good session for McLaren.”
Ex-Formula 1 driver Karun Chandock says Dunne’s performance in practice was “tremendously impressive”.
“If I was McLaren I’d be trying to do a deal with Cadillac or someone like that,” he said on Sky Sports.
“You want to find him a seat somewhere to build up some racing experience.
“I’d be trying to get him a deal somewhere else for a period of time and have him on some sort of a tether him back in, like Mercedes have done in the past with George Russell.”