ShadowISF

iTrader: (10)

I get 14-16mpg, 80% city 20% highway.

itsmike177

iTrader: (3)

I get 27mpg hwy cruising, sport mode off, D mode, constant 80mph.
And 19-21mpg with 50/50.

NorCal510

30mpg?? really? That might be a record! lol... well it appears the avg is about 22-23mpg hwy, below 19mpg city.

Lets Drive

iTrader: (3)

Coming off the winter season, I've been doing a consistent 19mpg in 90% city. I'll watch to see how it changes during the warmer months.

Highway, I'm averaging 28mpg, give or take depending on the conditions, but seems consistent @ 70mph using cruise and open road.

Pushing it, it dips into the low teens around 14mpg or less.

jchong

I have been getting 9L/100 km (31.38 m.p.g., or 26.13 m.p.g. in U.S. gallons) but it's about 80% highway.

Supraman16

iTrader: (5)

Lately with the gas prices I've been much more gentle with the throttle. The key has been keeping it under 2K RPM. Doing that has resulted in 22 to 24 mpg with mixed city/hwy.

ISFSteve

I am not sure about city as I have not paid close enough attention but 28-30 highway consistantly.

SCCAForums

I'm sorry... but you honestly must drive 55MPH...

I've done tons of testing... and once over 75MPH... 26MPG is about tops in my experience.

Sp3nc3r

Full city driving I get around 14-15mpg (manual + sport)

Mixed city with highway I get around 20-22mpg (manual + sport)

*Best MPG*
Full Highway OC to Vegas I got 27mpg going 80-90mph 110*degree with the a/c blasting with a loaded car(4 people + a full trunk)! (Snowmode + D)

Vegas back to OC i got 28mpg Same Situation as above but.. ( Sportmode + Manual)
Probably could have gotten close to 30mpg if i went a bit slower...

lobuxracer

iTrader: (2)

All time average over 48k miles is 21.0 mpg according to the onboard device. This includes a few track weekends at 5.2-5.3 mpg for three tanks of fuel each weekend, and a number of road trips where I typically see 27 mpg. Summer daily driving (commute) gets 20 - 21, winter gets 18 - 19.

inventurou

Daily driver, mixed hwy/city, always in Sport/Auto, and always mashing the pedal if i'm not already on someone's ***. 18.5mpg avg/tank

IS350atWOT

iTrader: (1)

I commute daily with over 60 miles roundtrip. 90% freeway/10% city. I average 24 mpg. On highways averaging 55 mph, I get 28-30 mpg. All of my calculations done by hand. I wrote a separate post about it here: https://www.clublexus.com/forums/is-...road-trip.html

dkaplan435

About 17.2.... Mostly suburb driving. Always drive in sport mode. Gun it whenever I get the chance.

ISF FAN

getting 25MPG on daily drive between Livermore and Hayward

Linkseal

iTrader: (5)

Still breaking my 2011 ISF in...

I was getting 7km/L 94oct on 100% city driving only with Auto mode.
Testing 100% city driving only with Sport mode this tank now...