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The 318ti OBD-II engine...
10-19-2006 06:48 PM
Last post by Filiski120
04-24-2024 06:40 PM
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Old 07-01-2008, 11:48 PM   #1
bwjulson
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Default Let's do a ti fuel efficiency survey

Well, as a stock ti owner with a tendency toward preservation over modification, I think, with these monster gas prices going up and up, all of the interested ti owners should do fuel economy surveys of their own cars and then we post them all and see what the best results are.
This past week, I did a 110 mile run on the interstate, keeping the car right on 65 mph with cruise control and some A/C use and actually got a 35.3 mpg average out of my OBC!
Some of these Japanese car makers seem to be bragging about the fuel efficiency of their new models. Nissan for example is boasting 28, 29, 31 mpg.
Well, BFD!
We are driving 10, 11, 12, and 13 year old cars with respectable performance and we're still beating those estimates!
Just an idea.
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Old 07-02-2008, 12:12 AM   #2
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not too be a douche or pick on the new guy but:

http://www.318ti.org/forum/showthread.php?t=10222&

I actually had to search pretty hard to find it so I don't blame you for not noticing it
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Old 07-02-2008, 12:44 AM   #3
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My best was just under 36mpg over a 200+ mile drive in 60 degree weather, which is right about the sweet spot. Seems like fuel economy really goes down either hot or cold. And with my sticky summer tires.
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Old 07-02-2008, 01:18 AM   #4
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25 overall. Max verified was 30 mpg (414 miles on 13.3 gallons) on a long freeway trip.
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Old 07-02-2008, 01:22 AM   #5
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In the 250 miles I have driven my car so far, I have gotten 28mpg combined based on the OBC.
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Old 07-02-2008, 02:01 AM   #6
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Used to get 34 -35 MPG (per OBC) on my commute on "normal" gas. Now all the stations have up to 10% ethanol and my MPG has dropped to the 32.8 - 33.4 range.
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Old 07-02-2008, 02:07 AM   #7
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well, since everyone's posting here anyways, I typically get 20-25 mpg
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Old 07-02-2008, 04:32 AM   #8
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I'm averaging just around 28 combined freeway/town. I get 29.5 after a good wax job though If I'm into the dasc and having 'fun' it drops a few like 24 or 25.

I don't use the OBC of course...just simple math


I haven't had a chance to go for distance yet. Talk to me after my 3.15 diff, new wheels bearings and full tune up.
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Old 07-02-2008, 04:42 AM   #9
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My last 171 miles I got 47.1 mpg. I never exceeded 60 mph (even on the interstate). The key was to stay in the far right lane while truck passed me allowing a draft to lower my wind resistance. Also my tires are at 37 psi. Oh I love the ti!
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Old 07-02-2008, 04:47 AM   #10
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^Don't you mean 37 'cause I'd bet my left nut your not getting 47 M P G....maybe K P G. Obviously your kidding doh
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Old 07-02-2008, 04:50 AM   #11
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No, I mean 47... take a look at the picture. When I gassed up after that, it came out to be ~47 miles per gallon.

In the second picture, when I filled up, the needle was on the far right white line exactly. I reset the trip like I always do. Also...

I HIT 122,000 TODAY! Woot!!
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Old 07-02-2008, 04:58 AM   #12
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I drive almost exclusively in the city in stop and go traffic plus I have a lead foot so I get 20 pretty consistently but on the longer trips Ive taken its gone up significantly. If I take it to Wisconsin Thursday Ill report what kind of mileage I get.
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Old 07-02-2008, 06:48 AM   #13
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My last two tanks have been 34 mpg hand calculated. This was about an equal mix of city and highway. It should go up a fair amount once I change the air filter and do some basic engine maintenance. I am still dreaming of a 2.93 medium case lsd. That would be good for at least 40 mpg on the highway!
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Old 07-02-2008, 06:58 AM   #14
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Quote:
I HIT 122,000 TODAY! Woot!!
CONGRATS!!! I remember when I hit 111,111 on the interstate and just happened to look down at the odometer. I tried to take a picture with my phone, but it turned out all blurry... so sad.

I get about 26 in the city with some spirited driving and 30 or 31 on the interstate going between 70 and 75 mph. Drafting trucks really does help, but you don't want to get too close! haha
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Old 07-02-2008, 07:00 AM   #15
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I went from a 4.44 to a 3.45 and the mpg is just slightly better. Maybe 1-2 mpg on average.
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