Some 431 customers from around the country have reported unintended or sudden acceleration in their Toyota Tacoma pickups, resulting in 51 crashes and 12 injuries, but the automaker said there are no flaws in the trucks and that many reports were "inspired by publicity."
Federal regulators are still weighing whether to upgrade the investigation launched in February, which has broadened to include 775,000 Tacomas sold between the 2004 and 2008 model years. That probe was spurred by a Tacoma owner who noted 32 complaints to the National Highway Traffic Safety Administration over acceleration problems.
A deeper investigation could force Toyota to recall the trucks if officials find a defect, and raise questions about sudden-acceleration claims that safety regulators and automakers have blamed on driver error for years. It could also address why no pickup model other than the Tacoma has garnered more than a few complaints of unexpected acceleration to the NHTSA during the same period.