Mexico City - Ferrari's Formula One title contender Sebastian Vettel has suggested that his recent spate of spins may have been caused by aerodynamics rather than driver error.
The German, who must win Sunday's Mexican Grand Prix to have any hope of denying Mercedes rival Lewis Hamilton a fifth world championship, has spun three times in the last five races while battling for position at the start.
In Italy he tangled with Hamilton on the opening lap, in Japan he spun again after he tried to pass Red Bull's Max Verstappen and in Texas last weekend there was contact with Australian Daniel Ricciardo.
All three came after his car was on the inside.
"The closer you are to the other car I think you lose some downforce and the spins that I had were all quite weird because there was not much I could have done," Vettel told reporters at the Hermanos Rodriguez circuit.