Toyota Motor Corp
The plan to hire the automaker to overhaul internal practices at an agency that regulates it drew fire from former EPA officials and watchdog groups.
The announcement came one day after a Volkswagen executive was sentenced to prison for an emissions scandal.
The same industry players who agreed to the standards are now working to roll them back.
The new recall includes some Corolla, Matrix, Yaris, 4Runner, Sienna, Scion xB, Lexus ES, GX and IS vehicles built between 2006 and 2011.
