feysulex

i have no problems with the 300. great gas milage and it does move when you want it to

larrs

I use 93 octane but it's 10% ethanol in the NY metropolitan area, which I'm fairly certain affects the mpg.

tinsnip

A maryland Lexus service rep recommended I stop using premium in favor of regular, mileage has even improved during highway driving... after 5000 miles, no engine problem, knock on wood, and my original complaint about sooty tailpipes, well the pipes are starting to look less sooty.

dunnojack

that's counterintuitive.
you'd think there would be more soot on the pipe with regular gas

but regular gas is supposed to decrease the hp output a little. by how much i dunno

Wronglane

On long trips with the cruise set to 70,I get between 33 and 35 mpg wit a 2006 GS 300. Tires and wheels are stock and fuel used is regular,yes,I said regular.

Yang1815

iTrader: (1)

33 to 35MPG?!?!

I'm taking a 5.5 hour road trip today to MN, I'll see if I can get over 30

Wronglane

"33 to 35MPG?!?!

I'm taking a 5.5 hour road trip today to MN, I'll see if I can get over 30 "


Yes,33 to 35 mpg and it wasn't a fluke. We took two seperate trips,both,from NJ to Toronto and back. The funny thing is that on both trips,we recorded 2 mpg better coming home.Iguess we had a tail wind.

Yang1815

iTrader: (1)

Well... I cruised at about 85MPH the entire way and got about 24, 25MPG.

Going back today so we'll see how that goes.