Cumulative Gas Mileage (Gas MPG) Thread
#677
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The K&N will allow a little better airflow, so MPG should not drop. A clogged cat will absolutely kill mpg. I'd get the cat checked out. I highly recommend finding the Mazda service center with the best rating. Have them check your cat.
#678
Zoom-Zooom
Nubbie here, Just bought an 04 and the mpg suck i was on the highway and was able to watch my gauge just slow drop i only went bout 20 miles and burnt damn near just ova a 1/4 tank
#680
EasyCompany
Rjayx-8, there's no way your 8 is running normal. Yes, they get bad gas mileage but no where near that bad. You should have your 8 looked at or try some of the tips a few of the guys like to offer.
Flash
Flash
#681
Zoom-Zooom
First im going to look in to the flash, I work at a dealer as a Hyundai tech and we have a mazda dealer...imma get one of our mazda techs to check it out wit me and do the reflash first...I also have a CAI coming so that should help lean it out a bit and while im installin the intake i'll clean the MAFS.thanks I knew something ain't right wit but i'll get it fixed thanx man.
#682
Zoom-Zooom
alright me and the mazda tech checked out my 8 and we found there is a intermit. misfire, so i'm just going to hit up rotaryfx and get plugs and wires from there the ignition coils are the same as factory so I get employee discount on parts and I'll just get those form work. Start with that first.
#683
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I am new to these threads so please don't shoot me for asking for help. I have owned 3 RX7 and NEVER gotten as poor MPG as I do on my 04 Rx8. I drive a mix between city and hwy and I don't hit the accelerator much, yet the best MPG I can seem to get all around is 15.6. Most of my drive to work is though the country long roads not many stops then I hit the beltway (opposite of traffic). I drive at about 65-70mph in 6th gear (speed limit is 65). I do run the motor to read line as told by other at least once a week. I also use 93 oct (only) and let my car warm up before driving.
I have recently changed my Spark plugs, Wires and Coils. I can not figure out why I am getting so poor MPG I was expecting 18-20, I only have 58,xxx miles on my car. Any help would be welcome. I have scheduled a "Stealership" appointment as I can not seem to figure out what is going on. I fill up at 11.9 gallons and I only get around 174-180 miles 14.9-15(MPG) the most I've gotten out of a tank is 220. Please help as I know this is far from normal. Someone else suggested my Cat is bad yet I don't notice any poor acceleration.
I have recently changed my Spark plugs, Wires and Coils. I can not figure out why I am getting so poor MPG I was expecting 18-20, I only have 58,xxx miles on my car. Any help would be welcome. I have scheduled a "Stealership" appointment as I can not seem to figure out what is going on. I fill up at 11.9 gallons and I only get around 174-180 miles 14.9-15(MPG) the most I've gotten out of a tank is 220. Please help as I know this is far from normal. Someone else suggested my Cat is bad yet I don't notice any poor acceleration.
#684
Zoom-Zooom
when u take it to the dealer have them check for ecu/pcm updates i work at a hyundai dealer that has a mazda side and me and one of the mazda techs went through the same steps changing the coils, wires and plugs which did help out some but there was an update that had not been done, after we did the update my mpg went up
#685
Hi I'm going.g to delete my other thread as soon as possible but I bought an 04 rx8.. Auto. . It got terrible mpg and then engine died so I just got it back after waiting three months in the dealer ship expecting 18-20ish.. And here I'm getting 12-14 city and 14-15 highway.. And yes I'm doing my calculations correctly by filling it up then another pump or two driving till empty then calculating... Wires spark plugs and coils engine core was all replaced techs said it has n flash... And the cat is fine.. No glowing or rotten egg smell... Have tried every variance of driving style with no improvements.. I thought it maybe be fuel filter.. But they apparently have a long warranty.. Or injecters. .? Fuel injecters cleaner??? Anyway any help is greatly appreciated.. Car starts right up and runs absolutely great.. Just horrid mpg. ..
#686
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I have a question i get around 245 for 14 gallons on 93 oct its been that way since i bought the car i am assuming this is horribly low??? My question is if i take it in to mazda and it didnt have the flashes would they do them for free?
#687
weeeeeeeeee
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245 is pretty good if you're doing city driving. highway mileage should be much closer to 300, if not a little over.
I get 200 per tankful going to and from work 20 miles each way, primarily back roads.
If you don't already have MSP16 then your 8 has been off the radar for the past 4 years. There's been nothing new since then.
I get 200 per tankful going to and from work 20 miles each way, primarily back roads.
If you don't already have MSP16 then your 8 has been off the radar for the past 4 years. There's been nothing new since then.
#688
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I drive back country roads which are mostly straight line i stop twice i drive 35 miles back and fourth from work so that 245 miles per tank is mostly highway miles. This past weekend i took a road trip which was 280 miles away. I had to fill up when i arrived at my destination and when I arrived home when i filled up both times it was 15.78 gallons so 17.78 pure highway driving with cruise set at 80mph
#689
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28L/100km, 8.4mpg
Okay I have a 05 gt 6spd, with 100,000km, and 10000km on a "new" mazda warranty replaced engine. with the new motor i have replaced/serviced the following, plugs, wires, coils, air filter, oil, coolant, transmission fluid, diff fluid, tires etc.. With this engine I have averaged 28L/100km or 8.4mpg!! The "M" flash was supposedly done when the new engine was installed. Once on a long slow highway trip I got 408km/253miles to the tank, but only once. I drive about a 50/50 split city hwy, the only mods are intake,catless midpipe, and catback. anyone have any clue why my 8 is so thirsty?
#692
EasyCompany
Currently playing: Drake
Just got new engine from Mazda. Warranty had 5 days left. I get about 320 miles driving highway through tn, and 200 driving it like I stole it. Just got a blue voodoo shift ****, just one more excuse to drive it.
#693
![EU](https://www.rx8club.com/images/icons/eu.jpg)
i start to feel like Sak Noel now that even though i roll much,use engine break,have extra good tires and ultra lightweight rims, drive like grandma in 95% highway,EVEN DONT REV OVER 2300 i still have mileage of a 15l/100km. AND Boys, you cant imagine how expensive it is to drive here.....
So is there some sort of trick that how it is supposed to be driven?
like always 3000+revs or something?
So is there some sort of trick that how it is supposed to be driven?
like always 3000+revs or something?
#694
Zoom-Zooom
i start to feel like Sak Noel now that even though i roll much,use engine break,have extra good tires and ultra lightweight rims, drive like grandma in 95% highway,EVEN DONT REV OVER 2300 i still have mileage of a 15l/100km. AND Boys, you cant imagine how expensive it is to drive here.....
So is there some sort of trick that how it is supposed to be driven?
like always 3000+revs or something?
So is there some sort of trick that how it is supposed to be driven?
like always 3000+revs or something?
#695
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people on here are stating they are getting 220 miles to the tank... which is what i get when i run it as low as it can go...but when i first got my 8 i was getting over 300 closer to 350. Is anyone else experiencing that type of gas milage? i do mostly interstate driving now too.
#696
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people on here are stating they are getting 220 miles to the tank... which is what i get when i run it as low as it can go...but when i first got my 8 i was getting over 300 closer to 350. Is anyone else experiencing that type of gas milage? i do mostly interstate driving now too.
#697
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But, I guess it all depends what you are accustomed to and what your expectations are...
#698
Wtf
what do you think? people usually take too calm these things about bad mileage. i drive 90% highway like a grandma and i still get mileage of 13mpg whisch is 18l/100km. its ridiculous since its almost three times more that mazda has promised to it.i also notice that the tenmperature doesnt rise to halfway of the tmperature meter. what do you think there is problem with the car since it sounds like it runs smoothly. is there some sort of update with mazda about it?
#700
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what do you think? people usually take too calm these things about bad mileage. i drive 90% highway like a grandma and i still get mileage of 13mpg whisch is 18l/100km. its ridiculous since its almost three times more that mazda has promised to it.i also notice that the tenmperature doesnt rise to halfway of the tmperature meter. what do you think there is problem with the car since it sounds like it runs smoothly. is there some sort of update with mazda about it?