Brendon Hartley has qualified 13th for tomorrow's Mexican Grand Prix after making it out of the first qualifying session but the euphoria was short-lived.
The 27-year-old Hartley safely progressed out of Q1 for the first time in his career after setting the 14th fastest time during that part of qualifying.
But just has he started his first flying lap in Q2 he lost power in his Toro Rosso and was forced to stop on track, ending his day.
"A little bit frustrating," the Kiwi said. "I didn't 100% get it together in Q1 so I was pretty excited about Q2. I braked into turn one and felt like I got it spot on and then there was a big bang and there was nothing I can do about that.
"A little bit frustrating - I felt like the pace was there to be definitely ahead of the Williams if we got it all together.