Grand Am Series
Join Date: Dec 2006
Location: Toronto, Canada
Re: Gas Mileage Issue with my 2010 Mazda3
Tell us, what is your exact fuel consumption in either L/100km or MPG? Also, with each figure include conditions of your driving i.e all highway, or city, if mixed, use a split like 30/70 city/highway. Your tank figure is very vague and does not in any way tell us if you have normal fuel consumption or not. Also, when filling up, don’t try to squeeze as much fuel as you can (multiple clicks) this can skew your fuel consumption calculation as your “full” tank volume will vary too much, stick to one or two clicks max, also filling at the same fuel station helps with accuracy.
Using the full tank figure, my current commute is 100% city driving, with lots of short trips after work and a lot of A/C use because of hot summer we’re having this year, and I usually get the fuel light at around 470 -500 km, so just looking at that, the fuel consumption doesn’t look good at all. When calculated I average 9-9.5 L/100km or about 25-26 mpg, which is the EPA city mileage. Once the weather cools down and I use less A/C, my fuel consumption will decrease.
My average for all highway trips ranges from 6.1 to 6.3 L/100km, with an average speed of 115 – 130 km/h and with use of A/C as well. Only once I got my fuel consumption below 6 L/100 and that was on a 250km stretch, but the traffic was flowing at about 90-100km/h steady, it was at night so no A/C was on and I couldn’t go above 100km/h.