jasonr

I miss my IS250 now. i used to get 28-33mpg.

senorsquid

iTrader: (2)

According to the display I average 25 MPG can get 27 if Im easy on the throttle and 30 if I dive all highway.

garroids

Wow it looks like it varies from people to people. A lot of you say 21-23mpg while others get 25-28mpg. Such a big difference!

ImportISF

iTrader: (9)

The problem isn't your car, its where you're driving lol (Manhattan).

istarzan

iTrader: (8)

I average 19.5 70% city and 30% highway. And I thought this was low. Looking here it seems about right. Just fyi, I noticed a 2-3 mpg gain after I switched to full synthetic.

synrgy350

30 mpg highway, cruising at 70 mph seems to be the sweet spot for me, any higher and it drops to 28-29 mpg. If I'm driving mostly city, I don't see better than 21-22 mpg.

gardenkhs

I get 19-21MPG most of the time. (city only)

P128sniper

Yea u have nothing to complain about, I do 80% city 20% Highway in Chicago and I'm averaging 19-21mpg and I'm happy

Hookalatch

I have not calculated my mileage manually yet but if I scroll through the display it shows average mileage to be about 14.5. The display for "this tankfull" usually shows 25-26. The rough calculations I have done in my head are very close to the 25-26 mpg. Am I supposed to reset anything for the display after filling or to start from scratch? Its a 2011 350c.

Chuck

Pxnda

Well my Avg is 23-25 but I'm pretty sure its around 20-21 as long as you're not getting below 15mpg you should be happy.

pheonix72

iTrader: (6)

Yes, greatly varies from driver to driver. My wife and I have very similar commutes. I let her drive my 2006 IS350 sometime and only average 21-22 MPG (For the whole week). I typically get 25-26 MPG (maybe even 28 when I drive at speed limit of 65 mph).
I think this has a lot to do with driving styles as I am smoother on the accelerator and hardly use the brakes.

FSportIS

iTrader: (13)

That is one factor but not a significant factor. The major factor is that CITY vs. HIGHWAY driving. The ones who getting good mileage do a lot more highway driving and the ones who get 19-21 are doing a lot more city driving.

When people report the number, please state CITY/HIGHWAY like 50/50 or something like that for accuracy. Simply saying I get 28 MPG or 13 MPG means nothing without knowing the context. Thanks.

pheonix72

iTrader: (6)

Sorry but I think it is a significant factor I my case. The same car, very similar commutes of 30 city/70 hwy and distant of approximately 28 miles each way but my wife get less MPG because she usually accelerate fast from a stop and use the brakes more often (vs.me very smooth off the line and dont use the brakes as much).

FSportIS

iTrader: (13)

I guess you can call 4 MPG difference significant (your wife get 21-22 while you get 25-26). I'm quite surprised your wife drives harder than you.

However, when it comes down to city vs. highway driving, it is a 9 MPG difference. (19-20 vs 28-29)

So in summary, fuel economy is affected by the two major factors:
1. City vs. highway (big factor)
2. Driving habit (hard and fast off the line vs. smooth, brake more vs. brake less...)

pheonix72

iTrader: (6)

Yes, 4MPG is significant since the only different is the driving style. I could get a bit over 28 if i drive at speed limit.
Hahaha...the IS350 is my beater DD and no need to drive it hard. I leave that duty to my Z4M Coupe with 6 speeds and 8K Rev. Limit