Please consider whitelisting my site in your ad blocker. If you must keep it running here, please support this endeavor and select a support plan - which starts at only $0.16 cents per day. I'm not asking for much. I just need a little help. Thank you. Click here to select a support plan.
Any car with more than 20K miles will vary greatly from the factory estimate. Factory estimate is completely useless to you. Measure it yourself.
(a) fill the tank to the max
(b) get on the HWY - late night / no traffic hour
(c) drive about 20 to 30 miles (at 55 MPH)
(d) use cruise control - very important
(e) note the EXACT MILES
(f) get off and immediately get gas
(g) note the EXACT GALLONS
Now you can calculate the MPG by
MPG = MILES (step e) / GALLONS (step g).
The reason you start out with full tank is that is the "repeatable" condition. You want to avoid traffic so you
don't use the brakes on the HWY. Braking will negatively affect the MPG calculation. You use the cruise control so
you and eliminate your driving habit as a factor.
Without a good MPG calculation you might be wasting your money chasing ghosts. Also you can repeat this test
anytime you feel like you car is not running right. You can also try the same thing but off the cruise control to
check how much your driving habit affect the MPG. etc.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.