djpeakSD

I get 19.5 with mixed driving highway/city, and a lot of spirited driving.

052SI

Are you in sport or eco mode?

We use eco mode and are getting 23 mpg per last fillup 60% hwy 40%city

ECL

No one seems to believe me, but I consistently get 24-25 mpg with 100% in town driving here in Tucson. There are plenty of traffic lights here, but there are also stretches of a mile or two without a stop. All numbers are calculated based on miles traveled and gallons required to fill the tank. Mileage on the highway at 75 mph for the two 200 mile trips I have taken was only a couple of mpg better. With very conservative driving in town, I did average 26+ on one tank. I rarely use the economy setting. Mileage seems the same for economy, normal, and sport+.

052SI

I don't know for certain but I'd imagine there's a difference in ecu settings ie throttle tip in etc in sport/+ vs Eco or why would they call it Eco mode?

sydtoosic

i'm happy to announce that i am now averaging 19.1 MPG, up from 14.1. that's city. the SR stated that we will see better MPG after 5-8K miles. i know it was a bunch of BS but i am definitely seeing better MPGs. 9350 on the ODO. i pulled up the fuel consumption on the nav and updated after i ran all the gas out and refilled, and the new numbers popped up.

052SI

Nice.
There's no reason these cars should be getting 14-15 city mpgs; geez my 510 HP XKR get 15 around town.

bigblack06

iTrader: (20)

Pretty sure it was the colder weather, as I have not hit the 5K marker yet.

CincyBrad

I only have 1,050 miles so far, but the MPG sucks. The car is AWD, but I am only getting 17mpg with 60/40 city & highway driving. I don't flog it either, car is usually in normal mode and I don't have a lead foot.

Rexus300

iTrader: (1)

Does the winter grade gas affect the MPG much? I have noticed it to improve a bit when switching to the summer blend. Avg 20-24 mpg city/highway on my AWD.

Vasili

18-19 with limited highway driving.

dseag2

Glad to hear your mileage is better as the engine has broken in. I have almost 8k miles on mine, and I'm getting around 19mpg and never put it in ECO unless I'm on the highway (which doesn't seem to make any difference). I guess ECO might make more of a difference in the city, but I refuse to barely be able to keep up with a Prius.

sydtoosic

i think you'll do fine smoking a Prius off the line in eco D.... but yeah that 14.4 was killing me. the data for my best avg. was 18.9, but when i filled up and reset the data it came back as 19.1.

052SI

FWIW
Our GS is less than one month old with only about 400 miles on the odo (far from broken in) and is getting the 23mpg 60/40 I stated above, the car is driven in eco mode and not aggressively.

I think you guys need to switch to eco mode and even though you're not flogging it, back off on the acceleration from stops/lights and watch the mpg's increase. You can use the blue ECO gauge to help your driving style too.

jucytec

All those having low MPG, did you try resetting the counter? just delete the data while coasting on a highway, and update the record to empty out the average. you should get a fresh start. while coasting you'll see crazy numbers like 35MPG until you start using the gas paddle again.

Also how long do you warm up your car? Both average MPG and after refuel MPG gets hit pretty bad in idle, especially if you idle for a long time. the computer is just calculating distance over gas used and it's not really an exact science as the car guesses the fuel consumption by estimating gas pumped into the direct injection via the fuel pump.

change your display to show the MPG meter and coast whenever you can. I usually take off WOT at every red light for no apparent reason., and coast when i can on down hill... if the hill is deep enough, I pickup speed to get over another hill without pressing on the gas too much...
doing all this I get 22-24MPG.

Long story short, with the right mixture of coasting you can still have a lot of high spirited driving at a decent gas mileage.