Once the plug-in goes through its 15-mile all-electric range, the car will get 50 miles per gallon from its hybrid-electric powertrain, up from Toyota's prior estimate of 49 MPG.
By comparison, the most fuel-efficient car sold in the U.S. is the Mitsubishi i battery-electric vehicle, which gets an EPA-rated 112 MPGe. The Nissan Leaf battery-electric gets 99 MPGe while the Chevrolet Volt extended-range plug-in is rated at 60 MPGe.
Toyota initially estimated fuel-economy figures north of 100 MPGe when unveiling the car at the Frankfurt Motor Show last September. AutoblogGreen reviewed the car here.