tjain

I did not modify the car in anyway (except for mud guards & turn signal mirrors) and always fillup with 89 or 91 rated gas if I go on a long trip. If it is city driving I fillup only 87 rated gas because there is no use of performance in stop 'n go traffic.

To make sure checked the gas receipts and the mileage shown by the trip meter was off by 1/2 mpg when compared to the standard method : No.of miles driven divided no. of gallons. I get around 21 to 21.5 mpg in city driving.
Hwy mpg is always between 28 & 29, but this is the first time I got above 30 mpg, at one point trip meter was showing 32.3 mpg but was unable to take the picture because the driving conditions were not safe.

AWD gets 1 to 1.5 mpg less than a FWD and RX350 gets better mileage than RX330, don't know how toyota managed this.

tone4

My dads got a Rx350 avg. 21mpg after chaged the tires, when he had the stock tires from Lexus he was averaging 22.5/23 .
I thought that was amazing since im only getting about 13-15 in my GS

Orzel

iTrader: (1)

As an interesting point to all the discussions about fuel mileage, we just returned from a two week trip, Western States, 3,358 miles in total, most of it spent at 4,000 to 8,000 feet in altitude, with a number of mountain passes that exceeded 9k feet. We drove through several hundreds of miles in the high desert in Nevada, as well as the Utah plateau, often running at 85 to 90 MPH (in Nevada absolutely zero traffic on the more remote highways). Our overall trip average was 23.03 MPG (trip computer stated 23.6), and a lot of this was with 10% ethanol fuel. We used exclusively premium from a fairly large cross section of retailers. Had the RX loaded down with luggage as well as several cases of wine and other spirits. The RX performed flawlessly, with no issues or problems.