WTF 160 miles on a full tank
#1
WTF 160 miles on a full tank
So I bought this 04 RX-8 2 months ago, thought it'd be fine with the car running on a full tank everytime for 160 miles, but as i read on, other people seems like getting much more than 13 mpg, so can anyone tell me what could be wrong with my car?
Sparks plugs? tires? uh... idk... What could be wrong??
And please for those people who are just trying to tell me what gas milage they are getting, you are not helping...
O, and btw, sometimes it takes about 2-3 seconds to start
just a thought it might help u guys figuring it out...
Thanks
Sparks plugs? tires? uh... idk... What could be wrong??
And please for those people who are just trying to tell me what gas milage they are getting, you are not helping...
O, and btw, sometimes it takes about 2-3 seconds to start
just a thought it might help u guys figuring it out...
Thanks
Last edited by dezau; 05-20-2009 at 04:29 PM.
#4
Hi guys! My name is Tony.
Join Date: May 2008
Location: San Francisco Bay Area 94542, USA. Earth. Solar System. Milky Way
Posts: 490
Likes: 0
Received 0 Likes
on
0 Posts
I just Seafoam my car.
And I got 210 miles before the empty tank light is on with 50/50 city & highway drive.
I didn't have 200 miles per tank for a while already.
And I got 210 miles before the empty tank light is on with 50/50 city & highway drive.
I didn't have 200 miles per tank for a while already.
#5
Almost boosted
iTrader: (3)
meh i get 150 to the last quarter, with new engine, new coils, new plugs, and a rebuilt transmission thats making a new weird noise
i also can get to 200, driving style makes a massive diffrence, sad this new engine seems to get worse hwy mpg then my last one.
clogged cat?
i also can get to 200, driving style makes a massive diffrence, sad this new engine seems to get worse hwy mpg then my last one.
clogged cat?
#9
I just drove two nights ago on a full tank of gas and got 345 miles to the tank. Personally, I don't think that is all that great for windows up, straight highway driving at 75 mph and the air conditioning off half my drive. I think that is what, 23.8 miles to the gallon?
#11
Registered
I go along with Shazy's recommendation to check the ignition stuff. 2-3 seconds of cranking is excessive. With the original ECU, these cars start almost instantly. After the 4206f flash, they'll start after a couple of revolutions.
What kind of driving do you do? Highway? City? Meek? Spirited? 13 sucks, but it's not outside of the range that people talk about here.
Ken
What kind of driving do you do? Highway? City? Meek? Spirited? 13 sucks, but it's not outside of the range that people talk about here.
Ken
#13
Honestly, what I've been observing lately.. especially since I've been tracking my gas mileage...
Tune up (normal plugs, coils, etc) will help a pretty good amount, depending on how bad it was in the first place
Assuming your engine is running fine, It's really just driving style
I can also easily hit 160 miles on a tank, if I constantly drive at school where it's pretty much stop and go. You're not going to get much better without hitting the highway.
I honestly think.. after nearly 70k miles, that about 22 mpg+ is only reserved for the highway.
BUT surprisingly, I found that (at least in MY 8) when i speed, I get BETTER gas mileage vs. 65. Honestly, I can hit 75+ miles per quarter tank when cruising at a higher speed while I will only get 55-60 going a lower speed.
Not endorsing speeding, but it's something to think about.
Tune up (normal plugs, coils, etc) will help a pretty good amount, depending on how bad it was in the first place
Assuming your engine is running fine, It's really just driving style
I can also easily hit 160 miles on a tank, if I constantly drive at school where it's pretty much stop and go. You're not going to get much better without hitting the highway.
I honestly think.. after nearly 70k miles, that about 22 mpg+ is only reserved for the highway.
BUT surprisingly, I found that (at least in MY 8) when i speed, I get BETTER gas mileage vs. 65. Honestly, I can hit 75+ miles per quarter tank when cruising at a higher speed while I will only get 55-60 going a lower speed.
Not endorsing speeding, but it's something to think about.
#14
Super Moderator
Ignition system...Coils ,Leads, Plugs.
Tires..make sure you have enough air in them, can make a 5-10% difference.
MAF Sensor Clean.
Blocked or dirty air filter element?
Have you tried Pre-mixing, IMO you get better compressions because of better sealing between your metal seals, etc. (apex, side and corner seals).
Fuel grade or quality...use premium, I get better mileage when I do.
Engine oil, yep, this can also have a slight effect on MPG, how long ago was the oil and filter changed?
Tires..make sure you have enough air in them, can make a 5-10% difference.
MAF Sensor Clean.
Blocked or dirty air filter element?
Have you tried Pre-mixing, IMO you get better compressions because of better sealing between your metal seals, etc. (apex, side and corner seals).
Fuel grade or quality...use premium, I get better mileage when I do.
Engine oil, yep, this can also have a slight effect on MPG, how long ago was the oil and filter changed?
#16
Registered User
Join Date: May 2007
Location: Lowell, Mass
Posts: 414
Likes: 0
Received 0 Likes
on
0 Posts
i got an ignition upgrade, changed the plugs about 10-12k miles ago (same time as the ignition upgrade), highflow cat and i still can only get 160-180miles on a tank of gas, car seems to run fine i dont notice anything strange, i def wish i could get an extra 30miles to a tank or so
#17
What's your tire width? That makes a big difference too.
I get 16-17 mpg with a Cobb tuned motor, AEM CAI, Greddy Evo TT exhaust, and 245/40/18 F 275/35/18 R. Plugs and coils have about 8k miles on them.
I get 16-17 mpg with a Cobb tuned motor, AEM CAI, Greddy Evo TT exhaust, and 245/40/18 F 275/35/18 R. Plugs and coils have about 8k miles on them.
Thread
Thread Starter
Forum
Replies
Last Post
Audio Concepts ATL
New Member Forum
21
09-26-2021 01:59 PM
BigMikeATL
RX-8's For Sale/Wanted
12
05-26-2016 12:31 AM
dweezil22
NE For Sale/Wanted
12
09-09-2015 10:50 AM