Carlos Sainz Jr. says his focus will be Toro Rosso’s lap count during the opening Formula 1 pre-season testing, after a Renault engine problem halted its filming day. The Italian outfit was running at Misano but did not manage to complete the 100 kilometres of running permitted by the FIA when it encountered an issue with the energy recovery system on the Renault unit.

Formula 1’s bosses should freeze the Mercedes team’s engine development until its rivals catch up, says Toro Rosso chief Franz Tost. Mercedes has led the way in the V6 hybrid turbo era, which began in 2014, with its power unit ahead of As part of an agreement between manufacturers and the FIA last year for engine regulations, some elements of the F1 power unit have been frozen already for 2017 in a bid to converge performance.