dragginboy

is there something wrong wit my fuel injection system? im only getting 17.8 miles to the gallon while doing city driving. i only pump supreme (93) gasoline in my car. is that bad?

mooretorque

AWD? FWD?? RX300? RX330?

That's not bad mileage for a 4000 lb vehicle, regardless, for city driving. Expect ~ 1-2 mpg less for AWD vs FWD. And octane won't affect gas mileage to a significant degree. Plus, unless your OM specifies 93 octane, you're spending more money without realizing any benefit.

Turboara

I think you can use as low as 87 octane on the rx300, not sure about the 330. 18mpg sounds about right though.

jayskinner

I just bought an '04 RX 330, and the manual says 87 or better, but 91 or better would result in better performance. My '01 Highlander seemed to get better performance and gas mileage with 91 or better, so I'm trying that first (93 octane at Costco) in the 330. My first tank I got a little over 18.5 mpg, which is about what I was expecting. Too much of my commute is bumper to bumper traffic.

nyca

how are you playing that XM thorugh the head unit, using a cassette adaptor?

jayskinner

The Roady wireless FM transmitter is what I'm using, and the sound quality is pretty good.

Lexmexico

I am in a high altitude, 7,700 feet and get about what you are getting, and am also using a 93 octane.