U.S. safety regulators said they have opened an investigation into possible throttle control problems with an estimated 730,000 older model Ford Escape and Mazda Tribute small SUVs.
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There have been 13 crashes reported to the National Highway Traffic Safety Administration related to the issue that led to nine injuries and one fatality, a Tuesday NHTSA filing shows.
NHTSA said it will investigate whether throttles remain open even after a driver has released the accelerator pedal.
A NHTSA investigation is short of a recall, but may lead to them for the two vehicles, which are from the model years 2001-2004.