Nico Hulkenberg was disappointed when his points-scoring run came to an end while battling for eighth place in Sunday's Indian Grand Prix.
The Sauber driver has been on a great run of late, scoring points in each of the last four grands prix.
Chasing a fifth successive top-ten result, Hulkenberg was forced to park his C32 when his brakes failed just six laps from the end of the Indian GP.
"Today I would have passed the finish line in eighth place," he said.
"We don't know yet what happened.
"When I was braking into the last turn something clicked and all of a sudden my brakes were gone. Something must have been broken on the car.
"Following that I pitted and went out again, but something wasn't right. It is very disappointing."