Very bad mpg
11-21-2017, 04:23 AM
#11
My bad guys, got a little lazy.
So I have a 05 with everything being stock. Just got my tire pressure to 32 psi all around. Put in about 10.6 gallons and Now reached about 170 miles with about 4-6 bars. Mainly drove in the city but I did do some highway (about 40 miles ish). I’ll continue to update you guys.
So I have a 05 with everything being stock. Just got my tire pressure to 32 psi all around. Put in about 10.6 gallons and Now reached about 170 miles with about 4-6 bars. Mainly drove in the city but I did do some highway (about 40 miles ish). I’ll continue to update you guys.
Next time you fill your tank, reset your trip odometer and drive around...when you get low enough on gas under driving conditions you'd like to understand ....
Fill your tank again (ideally from the fuel pump you did in round 1) then mark miles on trip odometer/gallons recorded when filling up and report back to s2ki.com otherwise expect nothing.
Fill your tank again (ideally from the fuel pump you did in round 1) then mark miles on trip odometer/gallons recorded when filling up and report back to s2ki.com otherwise expect nothing.
-Fill up to full.
-Set trip meter to 0.
-Drive as you would until you reach 1/2 tank or lower.
-Go back to the same pump.
-Fill up to full.
-Divide miles on your odometer by gallons that you JUST filled up.
Miles. Per. Gallon.
11-21-2017, 05:28 AM
#13
It doesn't matter how many gallons you put in to fill it up previously when not reporting the mileage.
You must fill up now that you are recording the mileage. Divide the number of gallons to fill up into the number of miles driven.
You must fill up now that you are recording the mileage. Divide the number of gallons to fill up into the number of miles driven.
The following users liked this post:
HawkeyeGeoff (11-30-2017)
11-21-2017, 10:59 AM
#15
Hey man.
Use the Fuelly app and track your MPG's over a few fill-ups (or ongoing if you're like me). You can do it manually and write it down but that is a PITA. Or just open the app at the pump, put in your current mileage and how many gallons you fill up and it does all the math for you.
I track MPG's just as another measure of the health of the engine - I don't actually care what MPG's I"m getting but if I notice them all of a sudden drop or change then I can look to see why - bad gas? tire pressure? some other issue?
As you can see in my signature below (you can follow the link to my Fuelly) I am averaging 22.5 MPG. I average 242 miles per fuel up (mostly city and innercity highways)... and I've been tracking for about 12 months now over approx 5000 miles. I'd say my car is in excellent health so if you want to base that as a benchmark go for it. Fuelly will also show you what other similar vehicles are getting for MPG's for comparison.
Use the Fuelly app and track your MPG's over a few fill-ups (or ongoing if you're like me). You can do it manually and write it down but that is a PITA. Or just open the app at the pump, put in your current mileage and how many gallons you fill up and it does all the math for you.
I track MPG's just as another measure of the health of the engine - I don't actually care what MPG's I"m getting but if I notice them all of a sudden drop or change then I can look to see why - bad gas? tire pressure? some other issue?
As you can see in my signature below (you can follow the link to my Fuelly) I am averaging 22.5 MPG. I average 242 miles per fuel up (mostly city and innercity highways)... and I've been tracking for about 12 months now over approx 5000 miles. I'd say my car is in excellent health so if you want to base that as a benchmark go for it. Fuelly will also show you what other similar vehicles are getting for MPG's for comparison.
11-21-2017, 11:45 AM
#16
We do need real mpg numbers.
That said, a common thing that will cause a noticeable decrease in mileage, especially around this time of year if you live in a colder area, is a thermostat stuck open. Engine never fully warms up so runs richer than it should. Failed intake air temp sensor can cause this too. Connect a cheap bluetooth adapter to the OBDII port and run Torque app on your phone. You'll see the water and intake air temps along with a bunch of other data. If there are any codes you'll be able to see them too. Adapters are cheap on Amazon and eBay.
That said, a common thing that will cause a noticeable decrease in mileage, especially around this time of year if you live in a colder area, is a thermostat stuck open. Engine never fully warms up so runs richer than it should. Failed intake air temp sensor can cause this too. Connect a cheap bluetooth adapter to the OBDII port and run Torque app on your phone. You'll see the water and intake air temps along with a bunch of other data. If there are any codes you'll be able to see them too. Adapters are cheap on Amazon and eBay.
11-21-2017, 12:25 PM
#17
Join Date: Aug 2012
Location: Foothills East of Sacramento
Posts: 5,600
Received 1,562 Likes
on
928 Posts
I do a mpg check every single time I fill up any car I have. You get so used to differences in conditions and driving you can almost guess and be spot on the actual miles per gallon. Any changes will lead to investigation.
My 2009 can vary widely. Twice driving for extended periods at around 35-45 mph (both times in national parks) generated mpg between 35 and 40!
The first time I thought I was having an issue with the fuel tank gauge and went to fill up at the "normal" mileage I do only to find the gauge was somewhat accurate. I was getting much, much better milage than I was expecting. I thought it was a fluke until it happened again a year later.
I usually get 21-25 around town in "spirited driving" and just less than 30 on the freeway.
My 2009 can vary widely. Twice driving for extended periods at around 35-45 mph (both times in national parks) generated mpg between 35 and 40!
The first time I thought I was having an issue with the fuel tank gauge and went to fill up at the "normal" mileage I do only to find the gauge was somewhat accurate. I was getting much, much better milage than I was expecting. I thought it was a fluke until it happened again a year later.
I usually get 21-25 around town in "spirited driving" and just less than 30 on the freeway.
11-21-2017, 01:56 PM
#18
I do a mpg check every single time I fill up any car I have. You get so used to differences in conditions and driving you can almost guess and be spot on the actual miles per gallon. Any changes will lead to investigation.
My 2009 can vary widely. Twice driving for extended periods at around 35-45 mph (both times in national parks) generated mpg between 35 and 40!
The first time I thought I was having an issue with the fuel tank gauge and went to fill up at the "normal" mileage I do only to find the gauge was somewhat accurate. I was getting much, much better milage than I was expecting. I thought it was a fluke until it happened again a year later.
I usually get 21-25 around town in "spirited driving" and just less than 30 on the freeway.
My 2009 can vary widely. Twice driving for extended periods at around 35-45 mph (both times in national parks) generated mpg between 35 and 40!
The first time I thought I was having an issue with the fuel tank gauge and went to fill up at the "normal" mileage I do only to find the gauge was somewhat accurate. I was getting much, much better milage than I was expecting. I thought it was a fluke until it happened again a year later.
I usually get 21-25 around town in "spirited driving" and just less than 30 on the freeway.
I get similar mileage in my 2006 with a flashpro tune. My last tank was 24.4 mpg with a mix of local highway, two lane moderate driving and a few aggressive mountain sections. I have gotten over 30 on highway trips. Even when I am absolutely thrashing it for a whole tank, I've never seen worse than 22 or so.
11-21-2017, 04:04 PM
#19
AP1 (Honda S2000) | Fuelly
2016 results are stock 00 AP1 (well, Direzza ZII & K&N FIPK)
2017 numbers are same car but lowered + J's half bumper/canards + 255/40/17 RT615K+
(I also moved over last winter so 2016 numbers are from a rural area, lots of sustained cruising, minimal traffic; 2017 numbers are in one of the 40 largest urban areas in the US)
2016 results are stock 00 AP1 (well, Direzza ZII & K&N FIPK)
2017 numbers are same car but lowered + J's half bumper/canards + 255/40/17 RT615K+
(I also moved over last winter so 2016 numbers are from a rural area, lots of sustained cruising, minimal traffic; 2017 numbers are in one of the 40 largest urban areas in the US)
