AM1

iTrader: (6)

i would love to be able to get 95 octane around here. usually the highest we can get is 91.

The G Man

I am just wondering if its the 95 octane that causes your low mileage. Have you try 91? How much do you idle? What is the average length of your trips?

cheap_deal

thats what i thought too. will fill up with 91octane and also check the idle rpm.

since i live in downtown, avg length is about 10-15mins. weekends its about 1.5hrs highway.

The G Man

Burning more octane than your car is design for will actually decrease mileage. Of course you know that short trips and idle time will bring the MPG numbers way down fast. So considering those factors, your mileage seems about right.

kewobrian

I've put about 10.5k (yes thats alot) on my 08 RX350 and think it would be pretty tough to get 17 mpg.

I usually get a low of 21mpg and high of 26mpg. I check mpg every time I fill up.

- 91 Octane
- Chevron/Mobile/Shell station
- Southern California
- 40city/60highway

And yes, I often drive fast.

salimshah

10-15 min each way twice or more on week days is a short run. Engine wastes a good portion of gas this way. If you stand still and idle, you significantly reduce mpg.

Try this. On week end zero out the the mpg and check what you get.

In UAE dont you use Imperial Gallon {British gallon which is more in volume}? I always wondered how Lexus vehicle's computer adjusted display for that? [Without adjustment the mpg number should get better ... counter to this thread, but still I would like to learn]

Salim

geko29

It's probably RON. Our ratings are (RON+MON)/2, and as such can't be compared accurately. You can guestimate by subtracting 4 or 5 points, which would make 95 RON=90 or 91 PON. So octane-wise, their regular is equivalent to our Premium.

cheap_deal

@geko29, ur right. i just noticed it today.
it is RON ratings here!!! so i guess id better stay away from the RON 91 fuel available here.