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Fuel Economy and Mileage
Math and Arithmetic
The Difference Between

What is the average difference in miles per gallon of gas used between stop-and-go city driving and consistent highway driving at the same speed?


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2004-10-09 22:03:28
2004-10-09 22:03:28

That will depend on how often you stop and start, and what speed you reach when running between stops. Generally, you'll find that city driving gives about 30% lower fuel efficiency than highway driving. It's interesting to note that the EPA numbers that most Americans use are estimates based on lab measurements, and the estimates for city are lowered by more than those for highway driving. This document http://www.epa.gov/otaq/cert/dearmfr/gasmel.pdf describes the process.

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