dbs600

Which model do you have?

enoren

I just crossed 3,400 miles this week. I think it's all about the mode I drive in. I tested a full tank of gas in Eco mode and got the 27 MPG. Most days I drive in Sport because it's more enjoyable. If I'm going to be on the highway for more than 20 mins, I'll usually flip it into Eco.

I work from home, so I don't drive a lot. And I'm on highways about half the time. Mostly to the store, Starbucks, or the golf course.

hoosier1

250 AWD. It's difficult to pulse and glide in the IS, as the transmission appears to lack a glide feature. When trying to glide it's like applying the brakes.

abcsoup

On my first tank since getting it from the dealer, I averaged 20 mpg. This is with an 80/20 highway/city split on a 350 AWD, plus at least 45 minutes of idle time at the dealership and at home setting up the car. I'm also usually driving in normal mode and very occasionally in sport since I'm still in the break-in period. I love the sound and pull of revving past 4k RPM in sport mode, but it's hard to use without blowing past speed limits. I'm estimating that I'll probably even out around 22-24 mpg with the same 80/20 split.

UncleSpud

2014 IS 350 F Sport rwd with 800 miles on the clock. 50% highway 50% city, averaging 20.2mpg. Most of my time is spent in sport +.

yowps3

Try putting it on Eco Mode.

90% of the time these cars are spent on city/hwy driving and that gliding feature is important IMO.

The same reason I dislike Dual-Clutch. They cannot crawl and glide.

antonyw

350 F RWD
Road trip to Oregon mostly I-5 at 70-80mph 26.7mpg

Some highway and four days of 15 mile commute with sport+ 19.1mpg

Overall at 1690 miles = 19.7mpg

RA040224

I've been driving in eco for a while now, and I get 6.7 l/100km (35 mpg) with a good mix of city and highway. Best I've gotten in city is 3.3 l/100km (71 mpg) but that was just after reset and with an already warm engine. And mostly flat or downhill

I'm at 6800km/4220 miles. I'm using eco for normal driving, because it gets just so much more fun when you put it in S+, it's like getting a new car

WWM

350 RWD here. Went for my first fill-up after 498km. Calculated 11.2l/100km which is about 21mpg. I want to say about 40% highway 60% city and probably 95% eco mode. Pretty happy with that especially since its mostly been <10C during this time.

Edit: I probably drove about 10-15km after the gas warning light had come on and I still only filled up about 55 litres even though the tank capacity is 66. I could have theoretically gone another ~100km before actually needing to fill-up.

redraptor

With just over 4000 miles so far, my average has been about 25.5 mpg. This is with Eco mode all the time except when I push on it and is in sport+ mode.

IS 350 AWD


Posted from ClubLexus.com App for Android

Kizersoze

I just put my second tank of gas in and tried to keep it in Eco for the whole tank. That lasted 30 miles. Either way I am getting about 22 combined driving conservatively. My guess is break in as I am under 1k miles.
I lived in Aurora for the past 4 years and altitude negatively effected MPG to my knowledge. What are you seeing enoren?

enoren

I've never heard that altitude affects gas mileage. I'd assume that the different mixtures mandated by law might negate any effects, but I have no idea. I've always been in Colorado, so I have nothing to compare it to.

hoosier1

Thanks. I'll try ECO mode again this week to determine if gliding is easier. However, the car seems sluggish is ECO mode. I guess it's a trade off, and selecting normal and sport is always there and easy to engage.

gocubs08

Damn I think something is wrong with my car after reading this thread. I live in downtown chicago and most of my driving is stop and go with occasional highway. My overall average is 14.1 mpg. It has gotten better than when I first got the car in July. The first 1,000 miles was around 11 mpg and now I'm around 14. I drive in mostly normal mode and don't think I drive that aggressive. My old 2008 IS350 was averaging 18MPG and my driving habits and commute are the same. Does AWD really suck up that much more gas?

Ugh

abcsoup

Maybe we should all start posting the average speed since last reset along with the MPG values? Might give some clearer insight into the highway/city split.