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Mazda MX-5 Miata Gas Mileage Reports

51 messages,  Last post on Jul 29, 2009 at 7:30 AM

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What is this discussion about? Mazda MX-5 Miata, Mazda MAZDASPEED MX-5 Miata, Fuel Efficiency (MPG), Coupe, Convertible

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#42 of 51 by investingdad Dec 11, 2008 (9:06 am)
Replying to: dbhmgb (Jun 18, 2008 8:47 am) I have a 2004 Mazdaspeed Miata with FlyinMiata intake, manual boost controller, and downpipe resulting in about 190-195 HP to the wheels (NOT the engine output). When I drive this car, I do so with the intention of wringing it out at redline on almost every shift. I have 23K miles on it. I usually get about 19 mpg. That's about 95% country road driving and what I'd expect for the thrashing I give it.   The one stint of highway driving I did this summer got me in the upper 20s. Bah, what's the fun in that?
#43 of 51 Mileage by dugl May 11, 2009 (5:33 pm)
I doubt my 2008 will do much better than the low 20 mpg. One the highway, the gearing causes the engine to rev at 4,000 rpm and highway speeds....while my old Elantra lumbered along at about 2,000 rpm (5 speed). The Miata is not a gas miser with 4.10 gearing
#44 of 51 08 gt mileage by erics6 May 11, 2009 (9:26 pm)
1st tank was 24 mpg and 2nd tank 28 mpg on my new 08 6 speed GT. City driving mostly and more highway on the 2nd tank. Pretty good for a green engine. Replies to this message: dugl (May 21, 2009 8:45 am) dugl (May 22, 2009 2:57 am)
#45 of 51 Still around 26-27 mpg by ateixeira May 14, 2009 (12:34 pm)
Hasn't varied much for me.   This is mostly commuting from suburb to city and back.
#46 of 51 Re: 08 gt mileage [erics6] by dugl May 21, 2009 (8:45 am)
Replying to: erics6 (May 11, 2009 9:26 pm) I'm thinking your mileage is more real world. I drive highway alot and at 70 mph, my 2008 is taching at about 3500 rpm, which is getting into the chainsaw rpm range, while typical miserly commuter cars are running 1,000 rpms less at the same speeds. Add a convertible top (wind scoop) to that, and the mileage goes down even more. In 6th gear, as soon as I release the accelerator, my MX-5 decellerates rapidly.....there is no "coasting" downhill....however, there is no downshifting going uphill either. I stay around 65 mph 3,200 rpms. Replies to this message: dugl (May 22, 2009 2:57 am)
#47 of 51 Re: 08 gt mileage [dugl] by dugl May 22, 2009 (2:57 am)
Replying to: dugl (May 21, 2009 8:45 am) I must make a correction to my previous post. I had switched to 93 octane fuel last week and thought my mileage was going to be bad, but I did the math this morning when I filled-up and I'm getting 33 mpg with a combination of city & highway driving.
#48 of 51 30 by mikeoz Jun 17, 2009 (7:42 am)
30. Period. All the time. Pedal to the metal. Top down, AC on, radio blasting. Regular gas. Mostly highway--70 to 90mph, back and forth to work 20 miles each way, every day. One person, 220 pounds. 1992 5 speed-no mods.   Less than 29, I'd suspect a problem... Replies to this message: ateixeira (Jun 17, 2009 7:58 am)
#49 of 51 Re: 30 [mikeoz] by ateixeira Jun 17, 2009 (7:58 am)
Replying to: mikeoz (Jun 17, 2009 7:42 am) That's all highway, though.   I had a 93 and in my mostly city commute got mid-high 20s, which is still good.   My new 08 is getting 27-28mpg, maybe even a touch better than my 93. Not bad.
#50 of 51 Real 2008 MX-5 Gas Mileage by spencer08 Jul 27, 2009 (5:03 pm)
My new 2008 Miata MX-5 Sport PHdT (5-speed manual) averaged 31.9 mpg first 1775 miles in/around town.   Next 5905 miles on a long vacation, overall gas mileage was 35.6 mpg, with highs of over 41 on two consecutive tankfuls in the mountains of Colorado, and lows of 32.5 over two consecutive tanks at 70/75 mph heading home through the desert. (All mileages carefully measured/calculated by a certified math nerd.)   I think it would take evil intent and/or devious planning to get less than 30 mph with this car. Replies to this message: ateixeira (Jul 29, 2009 7:30 am)
#51 of 51 Re: Real 2008 MX-5 Gas Mileage [spencer08] by ateixeira Jul 29, 2009 (7:30 am)
Replying to: spencer08 (Jul 27, 2009 5:03 pm) Not really, I have an all-city commute, and rarely get out on highways. My mileage is more like 27-28mpg.   A lot depends on where you drive, DC traffic stinks.

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