I was just going to look for a thread like this, so it's NECRO TIEM:

http://bit.ly/mb4jWZ

Anywho... just got back from a long drive to NY, with one leg hitting light traffic, otherwise crankin away at a speed limit +8, 87oct, 6MT, light A/C use, AND spending 20-30 mins playing follow the leader with an S4 who gave me a nice thumbs up for totally keeping pace with him... 30.8mpg on paper.

My usual commute to work is usually traffic to death for 40min with 10-20min of highway speeds, been averaging 26.4mpg.

 

going back and forth to work 80+ mph. straight freeway for maybe 10 minutes. i average 27 ish

 

I commute 60km (37 miles) to work each way and about 80% of that is hwy. I'm averaging 8.4L/100km or 28mpg.

 

I go about 45 total, 95% highway... averaging 29.5mpg...

 

95%freeway. 5-10mins drive to work 6days a week.+going to where i work because gf works next to my workplace, eventhough it's not my worktime yet. my usually speed is 70-80mph.
avg.25mpg...

 

^seems pretty low even for going 70-80. when i drove from DC to ATL i was averaging about 80 and i still came out ~30

 

it even got higher than before. used to avg. 24.6-24.7mpg... right now my miles is at 7.7k miles... mmmm

 

2011 Scion tC w/ an automatic transmission here.

A few days ago, I (and a friend with me in the car) drove from Northern Washington State to Northern Oregon and back on one tank of gas, averaging 35 mpg. By the time we arrived back home, it was running almost on fumes, as the low fuel level indicator light had been on for some time. Most of the trip was at speeds of 55-70. It seemed that the average trip mpg was increasing quickly on a stretch of road that had us doing about 50-55 mph, so can we surmise that at least with the automatic in sixth gear (0.6 gear ratio) that 50mph is probably the most fuel-efficient speed?

I performed another experiment yesterday, doing 50 mph +/- on a road around here that has a speed limit of 50, and after perhaps six or seven miles, the average trip mileage showed I was getting around ~ 42mph.

It doesn't seem like many of you get such good mileage, what gives? Is the information being presented to me by the car unreliable or is sixth gear in the automatic just that much of a beast? One thing to keep in mind is the 6th gear ratio in the automatic is 0.6, in the manual it's 0.73. I can see that accounting for some of the difference but I just wouldn't expect it to be the sole cause. Mysterious.

FYI.

 

Also are you using the AC a lot now that it's hot out?

 

I avg about 18... 0_o

 

The computer on most any car is pretty unreliable and overestimates. Anytime you want to calculate your mpg, just use the pen & paper.

 

Any idea why i'm getting such bad mpg. Im getting a little over 18 mpg. I'm pretty much all city though.

 

A/T here.
City driving all the time. About 5 minutes to and from work each day. Mix in a few other trips to stores etc....
Average about 19mpg. No A/C.

 

Do yall buy crappy gas?

 

Standard 'Unleaded' here.
Haven't made the switch to premium yet.
Don't know if it'd actually make a difference or just be a waste of cash money.

 

87 gas, A/T

My commute is 28 miles back and forth, 95% freeway @ 70-75mph

I get anywhere from 31-35 MPG. I usually get more MPG at night as I drive with the A/C off.

 

Well i meant like cheap gas stations.

 

I've installed TRD lowering springs and an Injen SRI and have put about 1000 miles on the car since the last post. I don't know if the engine is still "breaking in" or the mods or both but without any change to my commute and driving style I'm now averaging 7.7L/100km or 30.7mpg.

I'm using 87 regular unleaded and rarely use the AC... go figure!

 

I've read that the SRI (from anyone) can help with MPG since it sucks in warmer engine air it supposedly doesn't make the car dump more fuel... this is of course based on internet postings, so ... yeah.

 

Just passed 2000 miles, and avg is still at 26 mpg. Mixed driving, some aggressive, some highway...