Pascal Wehrlein reckons Manor improved a "little bit" during day one of the post-Spanish Grand Prix test.

Having finished ahead of team-mate Rio Haryanto on Sunday in the race, and 16th overall, Wehrlein revealed that the main focus during the day was set-up, as the team looked to further dial in some updates, although he did do a lap on the super-soft tyres, which left him fifth overall, on a 1 minute 24.297 seconds.

"We were trying a few set-up things because for this weekend we got a few updates and in free practice there is not enough time to try everything so today was setup work with long and short runs," he explained.

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Asked about his run on the super-softs, he added: "It was quick, 1.5 seconds faster than qualifying, but the track was quicker today as it was not as hot compared to the weekend and also the super-soft is obviously quicker, much quicker. [Overall] I think that we improved a little bit today and that's positive."

Meanwhile, he said the Circuit de Barcelona-Catalunya is not ideally suited to the Manor: "This track is maybe not the best one for us," he confirmed, "so I think some races will be very positive like Bahrain was, then some races are like the one we had at the weekend or even Sochi and Australia which weren't really good. It depends on the track.

"We are struggling a bit with downforce and with tyre degradation so it depends always on the track. We hope tracks like Montreal, Monza, Spa and Baku [will suit us better]... we want to be competitive there," concluded the Mercedes junior driver.