Toro Rosso’s programme on the third day of the opening pre-season test at the Circuit de Barcelona-Catalunya was plagued by drivetrain issues, the team has revealed, and will "need to adapt" its approach in order to achieve its aims in the build-up to the Australian Grand Prix.
Daniil Kvyat completed only 31 laps during the morning session before Carlos Sainz Jr. added another 32 laps in the afternoon, with his running coming to an end in the gravel at Turn 4.
Combining the mileage, it meant that only Haas conducted fewer laps than Toro Rosso on Wednesday, off the back of two days of relatively low mileage for both Sainz Jr. and Kvyat.
“We started the morning with Daniil assessing some overnight changes and, subsequently, some further tyre and general set-up related tests,” said Head of Vehicle Performance Jody Egginton.
“These yielded some useful data but, due to an issue with the drivetrain, we had to stop and as such were not able to complete the run plan.
“Carlos took over driving duties in the afternoon, picking up a few of the outstanding test items but also working on some control system test items.
“His running progressed well and we were at the point of moving to the soft compound when we suffered another more serious drivetrain issue, which resulted in the car stopping on track and our day ending early.
“The issues today, combined with not having had a perfect day one and day two, leaves us with a lot of ground to cover between now and the end of the next test and we will need to adapt the remaining running to achieve our primary objectives before Australia.”
