I have seen postings of people who say their MPG is as high as 30+ on the highway. I am not sure how thats possible. Feel free to comment

 

Do a search. I started a thread in here titled "what's your average mph". It was pretty clear that the average mpg is directly related to the average mph.

 

I am getting a TL. I have check in-hand. I'm just waiting for a Black/Black to come along again. Dealer sold it out from underneath me. :/ I would like to know what everybody is averaging on MPG. I drive straight interstate to work and back.

Is this with mods/upgrades?

I think my first splurge will be custom tail lights.

 

As this comes up maybe once a week, here's some reading:
https://acurazine.com/forums/3g-tl-2004-2008-93/what-your-average-mph-739156/
https://acurazine.com/forums/3g-tl-2004-2008-93/35-mpg-highway-almost-hour-736221/
https://acurazine.com/forums/3g-tl-2004-2008-93/205-mile-trip-check-out-fuel-economy-737947/
https://acurazine.com/forums/3g-tl-2004-2008-93/just-came-back-my-bc-canada-trip-736284/
https://acurazine.com/forums/3g-tl-2004-2008-93/04-tl-avg-mpg-20-a-726897/
https://acurazine.com/forums/3g-tl-2004-2008-93/type-s-fuel-economy-versus-regular-3-2-tl-729206/
https://acurazine.com/forums/3g-tl-2004-2008-93/38-mpg-my-10-hour-trip-719239/
https://acurazine.com/forums/3g-tl-2004-2008-93/tl-s-32mpg-723885/

 

In my 04 I averaged 32 mpg on all-highway run from Ohio to Long Island. Mixed highway/city I get about 24 or 25 mpg.

In my 07 TL S, I average 22 mpg in mixed driving.

 

all depends on da foot.

Got 29MPG 1/2 highway 1/2 normal roads. If I stick around town it varies a lot.

 

LOL. And that's probably the tip of the iceberg.

 

Around city I get between 20-22.

Highway I usually get about 30. I've only gotten 33 mpg once.

 

I have consistently averaged 28 mpg for the past 10 months, combined city/highway driving. Around a month ago I installed an AEM V2 CAI and now see 29-30 mpg. But then again, I have a stick

 

I just got 30mpg driving from Nashville to Phoenix last week. Ran 80 most of the way

 

23 city and 32 hwy.

 

I average about 26 these days.

 

i averaged 18 with an average speed of 28-30 all city driving

 

If I do all highway I can get up to 38 mpg or so doing about 75-80mph. I tested this driving from Dallas to Carbondale. Good stuff.

 

12 l/100km
so that works out to be about 19.6MPG

mostly city, mostly getting stuck in traffic

 

12 city, 28 highway.

And yeah, search next time please.

 

I want to welcome Cheezy Diamonds and Nova11024 to Acurazine. I average 23/24 mixed city/hwy and around 32/33 interstate on trips.

Nova11024, I grew up in P'cola and still have fam there. I get over there from time to time. I like what they did with I-110.

 

Only possible on a slight downhill grade. There's a road to work about 20 miles long. I can't feel or see the grade but going to work I get 28mpg and coming home I get 36mpg.

 

Thank you. I love this website and all the great information on here.

That speedometer reading was from Los Angeles to Las Vegas at 9:30pm, but the funny thing is that my AVG MPG is the same while driving city. No change.

 

23 mpg

 

 

Did you reset the trip computer after the trip to get a new reading in the city?

 

i get 26 mixed 32-33 hwy at 65-70

 

25 mixed, 60% city 40% freeway

 

I hope you guys aren't basing MPGs on what the trip computer says. I always check my mileage (fill tank and dividing gallons by miles traveled) and then compare it to the trip computer. Sometimes the trip computer is dead on (or as close as it can be without a 1/10 digit). Other times, it can be off by as much as 3 MPG...and it always errors on the optomistic side of things.

If you really want to know your MPGs, don't base it on the trip computer.

 

Might have been a tailwind. COming back I averaged 33. I was surprised at the gas mileage this thing gets. SHould have took a pic at the gas station I was surprised too lol. But that is over a 600 mile journey so yea lol (one way). I think 75 is prob the best speed for this car also I wasnt using cruise control I used my foot to modulate the whole way as I was used to doing it on my old car. I liked my vafc I would keep an eye on throttle input that seemed to help quite a bit. I need to try a run with cruise control I rarely use it. Oh yea my tires were inflated to about 40psi for the journey with the following mods in the sig on a dirty air filter.

 

i get about 23 mixed. but one time, i averaged 28 mixed... a fluke maybe? who knows...but i feel that having opened up the exhaust system upped the mpg quite a bit. i used to get sub 20s!!!

 

26 mpg

 

Unless you fill up on the same pump, same gas station, same time of a day, and know that the pump was just calibrated/checked, the manual calculation can be as much off as the computer calculation.

The thing that speaks against the computer calculation is that it does not show any decimal point, so while having 23MPG on the display; it could either be 23.1MPG or 23.9MPG.

This is really the only difference you will see when you run the numbers manually as you explained; however, if you round up and drop the decimal point from manual calculations you will most likely have the same MPG results.

 

I agree, these things are amazing on the freeway. Not that many years ago it was unheard of for a 258-290ish hp V6 in a 3,500lb sedan to knock down this kind of mileage.

 

 

I think everyone needs to list what car this is for when posting mpg. I think this would make a pretty good difference. I have an 07 TLS and I probably get about 16-18. I drive 80-90% short city trips and have a semi lead foot so I am sure that is a big factor.

 

I agree, I check both when I fill up and it is pretty close each time after I do the math. Easily within .9 or less. (as you stated, we don't know the decimal so I round up to max) Close enough for me.

 

12 mpg?!!!