Pierre Gasly was left encouraged by his first full day of running in Red Bull’s 2019 car on the second day of pre-season testing, insisting the RB15 has “really good potential”.

The Frenchman registered a total of 92 laps on his way to setting the seventh-fastest laptime of the day, just four-tenths behind team-mate Max Verstappen’s best from his run on Monday.

Gasly’s day ended on a somewhat of a sour note when he crashed his Red Bull entering Turn 12 as a snap at the rear spun the car around and into the barriers, which he admitted “caught him a bit by surprise”.

Speaking on his eventful first outing in winter testing, Gasly said, as quoted by Motorsport.com: “I was really excited to be back behind the wheel. We did some positive tests over the day.

“I felt very comfortable in the car. We feel there is some really good potential.

“We need to understand more our package but the first feedback is good.”

Having driven a Honda-powered Toro Rosso last season, Gasly was quick to praise the Japanese engine supplier’s reliability from the opening two days.

“I think so far it has been really good,” he added. “Also looking at Toro Rosso, they have managed to do a lot of laps [209 over two days] so we need to use all the feedback.

“But so far we are really happy with the job they [Honda] have done. Still more tests to do over the next six days but really happy so far.”

Verstappen is scheduled to drive the Red Bull on Wednesday, with Gasly returning on the final day of the first test.