The Brazilian started from pole position and controlled the opening stint, but lost the lead to Ferrari team-mate Kimi Raikkonen at the first round of pit stops.
He was trailing Raikkonen by about five seconds when he lost control of his F2008 in the middle of the double right-hander of turns seven and eight.
Massa was mystified as to what caused the spin.
“I dont know what happened, I just lost the car completely,” he told ITV Sports F1 pit lane reporter Louise Goodman.
“There was strange behavior on the rear, so I dont know [what caused it].”