Max Verstappen's first F1 test was "very impressive" according to his future race engineer Xevi Pujolar.

Toro Rosso ran its 2015 driver in a two-year-old car in Italy on Tuesday, with Verstappen completing 148 "trouble-free" laps. Part of the test was designed to allow Verstappen and Pujolar to work together ahead of the 16-year-old's step up to F1 and Pujolar said he had been impressed with how quickly Verstappen adapted to the car and made progress.

"Max started his run on Intermediates and got up to speed, making no mistakes," Pujolar said. "We worked through various procedures that make up a race weekend. He was very focused and precise and learned quickly, without having to ask many questions.

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"Once we were able to fit slicks, he got used to the car in the dry and built up his speed, while we tried various fuel levels, replicating both qualifying and race trim, doing a mix of short and long runs. For a first day, it was very impressive."