Max Chilton claims to be enjoying a "perfect" pre-season as doubts continue to surround the future of Marussia team-mate Luiz Razia.
Razia was signed early last month as replacement for Timo Glock as the Banbury-based marque made no secret of the fact they wanted a paying driver rather than someone with experience.
But due to issues surrounding his sponsors, Razia took no part in last week's second pre-season test in Barcelona, and the team are unable to confirm whether he will drive this weekend.
Chilton was again behind the wheel on Friday on the second day of the final test, meaning he has so far taken part in eight of the 10 days of testing overall, accruing more mileage than any other driver.
As a rookie, and with practice for the season-opening Australian Grand Prix just a fortnight away, the 21-year-old from Reigate knows the team's issue with Razia is playing into his hands.
Speaking at the Circuit de Catalunya, Chilton said: "It's perfect for me.
"For the team, if you have the same driver every day you get constant feedback. It's going really well.
"I'm happy with my progress and I've really started to learn things.
"We had quite a bit of rain on Thursday, and even that was a help because I wouldn't want to go into a wet race without having driven on the intermediate tyres and the wets.
"Now I've done plenty of laps on both those kinds of tyres, so it wasn't a wasted day.
"It doesn't help the team because we need to do more dry set-up work, but for me it's not a problem at all."
