Granite2WD
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- Dec 8, 2019
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I found a website (https://auto.howstuffworks.com/fuel-efficiency/fuel-economy/28004-epa-fuel-economy-explained1.htm) that explains how the EPA calculates the highway rating. What stood out to me is an average speed of 48 mph and a max speed of 60 mph during the test.
I don't know about you, but when I think about "highway" I think of 65 mph. Definitely not an average of 48 mph. For how aerodynamic a truck is, this makes people's complaints about fuel economy make more sense.
The "highway" program, on the other hand, is created to emulate rural and interstate freeway driving with a warmed-up engine, making no stops (both of which ensure maximum fuel economy). The vehicle is driven for 10 miles over a period of 12.5 minutes with an average speed of 48 mph and a top speed of 60 mph. Both fuel economy tests are performed with the vehicle's air conditioning and other accessories turned off.
The "city" program is designed to replicate an urban rush-hour driving experience in which the vehicle is started with the engine cold and is driven in stop-and-go traffic with frequent idling. The car or truck is driven for 11 miles and makes 23 stops over the course of 31 minutes, with an average speed of 20 mph and a top speed of 56 mph.
I don't know about you, but when I think about "highway" I think of 65 mph. Definitely not an average of 48 mph. For how aerodynamic a truck is, this makes people's complaints about fuel economy make more sense.
The "highway" program, on the other hand, is created to emulate rural and interstate freeway driving with a warmed-up engine, making no stops (both of which ensure maximum fuel economy). The vehicle is driven for 10 miles over a period of 12.5 minutes with an average speed of 48 mph and a top speed of 60 mph. Both fuel economy tests are performed with the vehicle's air conditioning and other accessories turned off.
The "city" program is designed to replicate an urban rush-hour driving experience in which the vehicle is started with the engine cold and is driven in stop-and-go traffic with frequent idling. The car or truck is driven for 11 miles and makes 23 stops over the course of 31 minutes, with an average speed of 20 mph and a top speed of 56 mph.