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post #1 of 386 (permalink) Old 01-26-2013, 10:03 PM Thread Starter
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Real World Gas Mileage

How are the current owner's doing, and what is your city/highway mix?

Gas mileage is one of the big selling points for me and I want to make sure it does as well as it says.
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post #2 of 386 (permalink) Old 01-27-2013, 11:59 AM
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I just had my first full up and it came to 31mpg with roughly 50/50.
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post #3 of 386 (permalink) Old 01-27-2013, 12:44 PM
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Well I haven't calculated anything... but I get 400 to 450 miles on a full tank depending how I drive.
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post #4 of 386 (permalink) Old 01-27-2013, 12:53 PM
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Speed is a big factor in determining MPG.. Following is coming from Mazda 3's test drive experience.

"It turns out that the SKYACTIV Mazda3 is especially sensitive to driving style. Driving with a very light foot, shifting short of 2,000 rpm, and paying extreme attention to impending red lights (so as to get off the gas as soon as possible), I managed a high of 41.0 mpg on my standard drive from home to the kids’ school (with a trip computer reset after the engine had warmed up). Now this is more like it!. Speed is a big factor. First, air resistance rises at the cube of velocity. Second, engine speed increases in lock step with vehicle speed, and at a certain rpm efficiency begins to fall off dramatically. Driving at a steady 78 mpg, the trip computer reported 30.6 (again close to my nearly decade-old Protege5). Drop ten mph, and the number ticked up to 31.3. Drop down to 62, and it took a larger jump, to 33.6. Perhaps at the double nickel the promised 37 would materialize—but I just can’t drive 55! The implication is clear – the EPA highway figure is only going to happen at speeds much lower than most of us drive."

Source: Mazda3 SKYACTIV: The Truth Behind The EPA Fuel Economy Numbers | The Truth About Cars

But again, I guess this is going to be the case with every car.. Not just Mazdas with Skyactiv Technology.

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post #5 of 386 (permalink) Old 01-27-2013, 01:03 PM
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You should start using Fuelly.com (See my Signature below)

The mobile site is very easy to use right after you pump your gas.

It shows a nice historical look at the MPG over time. It's Free...

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post #6 of 386 (permalink) Old 01-30-2013, 03:05 PM
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Using fueleconomy.gov also would be good, as they have better definition between different engines, transmissions, et al of the same model year. No neat sig yet though. The more data the better!

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post #7 of 386 (permalink) Old 01-30-2013, 03:21 PM
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Quote:
Originally Posted by Sydtron View Post
Using fueleconomy.gov also would be good, as they have better definition between different engines, transmissions, et al of the same model year. No neat sig yet though. The more data the better!
I used to use that site, but there are a lot more people using Fuelly and the website is gives you much more information about your fuel spending, etc.

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post #8 of 386 (permalink) Old 01-31-2013, 04:02 PM
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Quote:
Originally Posted by MzdaGuy View Post
Speed is a big factor in determining MPG.. Following is coming from Mazda 3's test drive experience.

"It turns out that the SKYACTIV Mazda3 is especially sensitive to driving style. Driving with a very light foot, shifting short of 2,000 rpm, and paying extreme attention to impending red lights (so as to get off the gas as soon as possible), I managed a high of 41.0 mpg on my standard drive from home to the kidsí school (with a trip computer reset after the engine had warmed up). Now this is more like it!. Speed is a big factor. First, air resistance rises at the cube of velocity. Second, engine speed increases in lock step with vehicle speed, and at a certain rpm efficiency begins to fall off dramatically. Driving at a steady 78 mpg, the trip computer reported 30.6 (again close to my nearly decade-old Protege5). Drop ten mph, and the number ticked up to 31.3. Drop down to 62, and it took a larger jump, to 33.6. Perhaps at the double nickel the promised 37 would materializeóbut I just canít drive 55! The implication is clear Ė the EPA highway figure is only going to happen at speeds much lower than most of us drive."

Source: Mazda3 SKYACTIV: The Truth Behind The EPA Fuel Economy Numbers | The Truth About Cars

But again, I guess this is going to be the case with every car.. Not just Mazdas with Skyactiv Technology.

Car and Driver found much better results in their Fun at 40 article. Shows the Skyactiv 3 achieving 40 mpg at up to a constant 76 mph, and even more at slightly lower speeds. I get the feeling the new 6 will likely have higher variance between steady speeds and multiple acceleration events at speed versus the old 6, but that is due to the larger gear spacing and how efficient they have made this engine/transmission combo.

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post #9 of 386 (permalink) Old 02-02-2013, 05:36 PM
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If you can trust the current mileage reported by the car, I'm seeing between 37.8 and 40.8 mpg on the highway, and averaging about 33 mpg in a blend of hwy and city driving.
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post #10 of 386 (permalink) Old 02-02-2013, 06:20 PM Thread Starter
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Wow - double check with fuelly maybe?
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