Carlos Sainz was left lamenting Toro Rosso's lack of running after a difficult qualifying session.
Sainz feels that time off track has hurt them.
"It has been a tough weekend," he said. "Obviously because of the all the problems you’ve seen."
"No running means no learning no time for testing parts on the car, no time to develop a set-up, no time to get used to the track in very changeable conditions," he added. "It has been a very tough weekend to finish the season off."
However, he pointed out that this one bad weekend wouldn't define the season for Red Bull's second team.
"We know we’ve had a good season up until now so this one should not mask the good."
Bahrain International Circuit - Winter testing
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