Max Verstappen says Toro Rosso's form is looking very promising after his first day in the updated STR10 at Barcelona.
Verstappen took over from teammate Carlos Sainz at the wheel of the Renault-powered car, which features several updates introduced for the final week of testing.
The Dutchman completed his second race simulation at Barcelona today, despite his day coming to an early end due to an electrical problem.
Nonetheless, the Toro Rosso driver was very encouraged by his car's pace.
"The race simulation went very well and it's looking very promising. I think again we made good steps," Verstappen told reporters at the end of the day.
"I think we made a really good step. Now we have to get more experience with the car and we did a lot of checks today and then a race simulation, and that was really promising."
Verstappen will have one more day of running on Sunday, but he admitted he is looking forward to the Australian Grand Prix.
"I want to race now. Testing gets a it boring," he said.