Even so after all the mis-conception, of the prius breaking down failing over the years, it still now has held up to against what critics have said about the prius!When reader Anthony Frey saw our recent report on the fuel economy of a 2001 Prius that was driven 206,000 miles, he suggested that we test the staying power an the even more popular second-generation Prius, offering his own high-mileage model for testing. (See the first-generation Prius video.) Frey drove his 2004 Toyota Prius over 1,100 miles to our test track in central Connecticut from his home in Iowa City and back. He used 40 gallons of gas for the round trip, observing about 54 mpg.
To see how his has car held up, we ran the 2004 Prius through our city, highway, and one-day test loops, measuring an average of 42 mpg. That’s just 2 mpg drop, or about a 5 percent, from the 44 mpg we measured on a similar 2004 Prius when it was brand new. And it’s within the range of difference we found from different tire installations when we tested a 2008 Prius Touring with tires that have higher rolling resistance than base Prius tires. Frey’s car didn’t have its original tires. Such a difference may be noticeable on the car’s display screen, but the real impact at the pump would be negligible.
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