Higher Age, Lower Fuel Economy - 2004 Toyota Prius Long-Term Road Test
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2004 Toyota Prius Long-Term Road Test

2004 Toyota Prius: Higher Age, Lower Fuel Economy

September 14, 2010

prius_heat_1600.jpg

Yep, we still have a 2004 Toyota Prius in our long-term fleet. It may not have as many miles as some out there, but we recently broke the 80,000-mile mark. We used this as an excuse to compare the first 10k of Prius fuel efficiency to the last 10k.

1-10,000 miles
min: 28.1
max: 57.6
avg: 41.9

74,000-84,000 miles
min: 18.5
max: 50.8
avg: 37.3

Our lifetime average in the Prius is still 40.4 mpg. But after roughly 5 years of ownership our average fuel economy is down about 5 mpg (for reference, our 65k-Flex shows no mpg degredation between similar intervals). Imagine this is your Prius. Would this trend concern you?

Mike Schmidt, Vehicle Testing Manager @ 84,033 miles


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