Real life comparison numbers are still large. My wife refuses to drive the Prius "like a hybrid." She starts it and lets it warm if it's cold and starts it and lets it cool in the summer. That's the same way she drove the Toyota Solara and Nissan Maxima before the Prius. In the Prius, she averages 40 mpg in the winter and 46 mpg in the summer. In the Solara and Maxima before, the numbers were 16.5 mpg in the winter and 22 mpg in the summer. We are effectively saving about 50% of her driving dollars. As part of her job, she gets paid mileage for work related driving. last week she drove 60 miles related to work at which she is reimbursed 55 cents per mile now since gas prices have went down. Exhaust emmissions: compare those with a hybrid.