Carlos Sainz Jr said his crash at the end of Q2 in Singapore Grand Prix qualifying was partly due to him not knowing how close he was to getting into the top 10.
Sainz hit the wall on the exit of Turn 19 in the final sector, damaging his Toro Rosso car and disrupting the laps of several other drivers due to yellow flags.
But afterwards the Spaniard said if he'd been aware of how achievable a Q3 slot was, he would not have pushed so hard.
"We had a couple of problems that didn't let me get a good baseline for a second run [in Q2]," said Sainz.
"On the dash I didn't have my laptime so I didn't know some things.
"I didn't have my normal page, so I spent a whole lap trying to change it.
"So I needed to push quite hard and I was properly on the limit to get into Q3.
"I was eight tenths quicker than my previous lap, but I didn't know that four tenths higher would get me easily into Q3.
"If I would have known that I would have probably not gone so crazy, so aggressive.
"It was a mistake - I caught a bit too much kerb and then I hit the wall, that's it."