Bad mpg
#1
New Member
Thread Starter
Bad mpg
Hi, I have a 2003 track model the thing has power from hell but I only get 13MPG.
What's the deal?I do have a small emissions leak but man that couldn't cause such bad MPG could it?
What's the deal?I do have a small emissions leak but man that couldn't cause such bad MPG could it?
#4
New Member
I average 13.4 mpg, so I guess my car works better than yours
#7
New Member
Thread Starter
MPG reply
well, actually I get 13.74MPG.But EPA says it should be 20 city and 26 highway I mean that is a big difference whats up with that?I do have a check engine light on and the code says "small emission leak"and am not sure when the plugs were last changed, but I don't think it should make that much difference.I am going to take it into the shop soon,they say they have to have it sit over night in order to run down vacuum leaks when it's cold and less than a half tank of gas
Last edited by turbotommy350; 06-30-2017 at 11:45 AM.
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#9
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What fuel type are you using? For 7 years the only fuel I used was Sunoco 93 and my mileage was terrible. 14.5 MPG at best.I never cared about gas mileage to really look into it but 1 night the only station I could find was BP.After filling up my mileage went up drastically. For 2 years now my mileage varies between 20.5- 22.5 highway/city. Nothing lower same type of driving...
#12
350Z/370Z Tech Moderator
MY350Z.COM
MY350Z.COM
No tune/AFR correction? Lots breathing mods probably putting your AFR out of ECM-correctable range.
Def affects mileage in either direction of stochio. But not so much you, Matt, your mileage seems OK. Others might want to check AFR due to leaks or other breathing issues. Me, I get 57mpg.
Downhill.
Def affects mileage in either direction of stochio. But not so much you, Matt, your mileage seems OK. Others might want to check AFR due to leaks or other breathing issues. Me, I get 57mpg.
Downhill.
Last edited by MicVelo; 06-30-2017 at 01:09 PM.
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Atreyu'z 350 (06-30-2017)
#14
New Member
well, actually I get 13.74MPG.But EPA says it should be 20 city and 26 highway I mean that is a big difference whats up with that?I do have a check engine light on and the code says "small emission leak"and am not sure when the plugs were last changed, but I don't think it should make that much difference.I am going to take it into the shop soon,they say they have to have it sit over night in order to run down vacuum leaks when it's cold and less than a half tank of gas
An emission LEAK.. Interesting. What code was it throwing? How many miles does your car have?
#15
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#16
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MY350Z.COM
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I normally got 22 combined with mine, 28 for freeway trips and 18 to 20 just in town.
I did drive only on base for 5 days, maybe 40 miles total, short little trips and my MPG was 10.
Breathing mods, my car went for 4 years without a tune. It's not your problem
I did drive only on base for 5 days, maybe 40 miles total, short little trips and my MPG was 10.
Breathing mods, my car went for 4 years without a tune. It's not your problem
#19
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Thread Starter