Federal safety regulators said Wednesday they have received 10 complaints from drivers alleging sudden acceleration in Toyota vehicles that have already been repaired under the automaker’s recent recall.

The National Highway Traffic Safety Administration said it has reached out to the consumers in question to gather more information about the complaints, which were not immediately verifiable.

“NHTSA has already started contacting consumers about these complaints to get to the bottom of the problem and to make sure Toyota is doing everything possible to make its vehicles safe,” David Strickland, NHTSA’s administrator, said in a prepared statement.

“If Toyota owners are still experiencing sudden acceleration incidents after taking their cars to the dealership, we want to know about it,” he added.

Cindy Knight, a Toyota spokeswoman, said the company is aware of the post-repair complaints and has asked NHTSA to help Toyota contact the customers in question.

“We are confident that our Toyota vehicles are safe, and we’re doing everything we can to ensure our customers are satisfied with the repairs we’ve been making,” Knight said. “We have rigorously tested those solutions the Toyota engineers have developed and we’re very aggressively investigating any complaints.”

Toyota has recalled more than 8 million vehicles worldwide for problems related to sudden acceleration, which have been blamed for several accidents resulting in injuries and death. The automaker has repeatedly apologized for the lapses in quality control, and Toyota technicians are working extended hours to repair the recalled vehicles.

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