At least 10 Toyota drivers have told US safety officials their cars accelerated unexpectedly after the company had supposedly fixed the problem.
One driver, who has not filed a complaint, said he narrowly avoided driving over an embankment and hitting a wall after his 2009 Camry accelerated on its own five days after being serviced under the recall programme.
Stewart Stogel said the incident occurred near his New York home after a dealership trimmed the accelerator pedal and installed new brake control software as part of the floor mat recall.
“At first the brakes didn't engage at all,” he said. “Then the wheels were able to get some traction, and all of a sudden the engine did disengage.”
A spokeswoman for Toyota said it had not received any such complaints.