Mine was stuck open but no CEL

OH HOWARD GOT TO IT FIRST:) it can be stuck without a cel just like a cat can be partially clogged and not throw a cel. philodox it seems you are going about things the right way. make sure you report back what they find. thanks and i hope they find a resolution:)

on a side note- my mpg has recently fallen from its normal 16 around town to about 14. ive been on it a little more recently so that could be it. ill keep an eye on it.

there was also the port campaign to change some dipsticks. plus one for each recall to fix the cars in port. plus one to change something in the manual etc. anytime a flash or recall or very important tsb there is a port campaign to fix those cars.

I went to the dealer back about 6 months ago complaining of poor MPG. They took my car on a trip to Sacramento and back on CC at 70mph and averaged 22mpg. The best MPG I have gotten so far was 21, but I wasn't on CC.

Well, Just picked my car up from the dealer. They talked to Mazda USA tech service on the phone. They have no clue what may be causing it. Mazda USA has no way to check MPG without driving the car. Apparently most vehicles can check MPG through the CAN bus by measuring fuel spent vs. RPM/Gear or something like that. Apparently the RX-8 isn't capable of this test.

I had the dealer check for fuel leaks and they found none. They swear to me upon the bible that my Borla Cat-Back exhaust is the culprit and that if I put the stock exhaust back on that I'll get an extra 8mpg. What bullshit. I'm calling Mazda USA to complain to them first hand.

Will keep everyone posted on how things go.

you should have left it with them to test the mpg. but of course you would want a loaner and they would say no loaner because we think its your exhaust yadd yadda...

do you have any receipts showing when you got the borla. can you ompare the date with your mpg log to see if there was a change BB(before borla) to AB ?

Excuse me for not being familiar with CA. How far is Sacramento from CC? They just took it for a road trip to check gas mileage?

Oh yeah, I put the Borla on with 200 miles on the car. I was still getting 15mpg or so until about 2 months ago when the MPG has steadily gone through the toilet.

cc=cruise control and yes in order for the techs to do something about your complaint they have to verify the problem exists i.e. drive the car.

Is Howards car an 04? As some of you remember we saw many thermostats replaced last winter for a P0128 code..

Any one with access to the codes may notice the 128 has been dropped for the 05's

my mileage in city has dropped from 14 to 11-12 since it got very cold all im doing differently is letting it warrm up for 3-5 minutes before i go, is it possible that im losing the mileage in warmup??? coz this is unacceptably low.

Thanks for the comments, but lets not get off topic here ;) But yeah, may be the cold.. or something else.. once I find out what's going on with mine, I'll let everyone know.

sorry, they drove up to Sacramento from their shop in Burlingame on Cruise Control (CC). Yes, they did indeed take it for a 1 day roadtrip and checked the mileage.

August 03

The tires that came with the car are downright dangerous in cold, slick weather. Many threads and posts on this one. The biggest problem is getting the better tires as they are still in short supply because they are they same size as those used on the 350Z thus are in high demand.

The mileage is BS...and they know it. You need to press that one with Mazda USA directly.

Mazda doesn't set the MPG. The EPA does. Mazda cannot modify the sticker.

If you keep the RPMs low you will get EPA numbers. Of coarse your car will feel like it has 100 HP, but that is how the EPA drives.

Problem is most 100HP cars still have much better MPG than the RX-8 even if you keep its RPMs low. Now, take the RPMs up on the RX-8 and you have a 200+ HP car that gets millage more like a 300+ HP car.

Mazda is the beneficiary of the deception (i.e. a price sticker that says "239 HP" motor with decent EPA numbers), but they aren't the cause of it.

-Mr. Wigggles

What you are saying may be true for your car, the way my car should be and most others, but it does not apply to the way mine is. I have tried keeping the rpms below 3500 (worst mileage of all at 8.7), below 4500(9.7mpg), between 3000 and 6000(9.5) and WOT to redline in every gear(10.1mpg) and it doesn't differ. I have let friends drive it and they get the same results so it is not me.

I don't give a crap what the sticker says, I know people with Vipers and Ford GTs(500+ HP cars) that get better mileage. I get 19.8 in town in my F150 Supercrew PU. My RX4 got over 20mpg and I was young and drove it hard all the time.

Nothing you said has anything to do with the problem my RX8 has with it's gas consumption.

So the best you are getting is 10.1 mpg? There is something wrong with your car. Get on the phone with MNA asap, and so not take no for an answer!

btw, I am getting about 18 mpg, sometimes a litttle less, sometimes a little more, driving fairly normal.

Forgive me if I missed this somewhere in prior posts, but how many miles do you have on your 8?

I have emailed them with the specifics.

Last time I looked it was about 9600 miles. It had 7500 on it back in May when this mess started happening.

I got a response telling me to have the service manager make an appointment with the District Customer Support Manager (DCSM) the next time he visits the dealership (4-6 weeks).

If anyone has a direct line for this let me know.

Who typically does the service on your 8? Please don't say Joe Meyers.

Nope, Joe Myers.

Didn't I ask you not to say those two words. Heh. I had alot of issues with that dealership back when I had my 2nd gen rx-7. For some reason they had a terrible time diagnosing problems and finding solutions. Have you tried another dealership?