Lexus IS 350/IS 250 Real World MPG Numbers

41 messages, Last post on Jan 14, 2008 at 2:02 PM

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#38 of 41 My first tank has average 22mpg by nicecars May 22, 2007 (9:23 pm)
My IS 250 has average of 22mpg. I have about 50% hwy, 50% local. It is below my expectation caz I used to have a toyota camry, which delivers average of 25mpg for 100,000 miles.
#39 of 41 Re: IS 250 Fuel Economy [freebird2000] by carmonkey Jul 27, 2007 (7:09 pm)
Replying to: freebird2000 (May 22, 2007 5:26 pm) You're still in break-in. Give the car another 2k-3k miles to see a jump in the mileage.
#40 of 41 MPG by jzalkin Jul 28, 2007 (9:01 pm)
I am at 28mpg with 70-80% hwy. I have found that it drops if using cruise control and dips at and above 80 mph.
#41 of 41 Observation by ar39 Jan 14, 2008 (2:02 pm)
I've observed Sunoco premium gives me a better mpg over other brands of gasoline, with 75% hwy 25% city driving in my 2006 IS250 AWD. Sunoco 91 - 28.4 Exxon/Shell 93 - 27.7 BP 93 - 26+ Measurements were taken in similar driving conditions. Also, these are not dash monitor reading but, miles/distance calculation. The car monitor shows variance of +1.3 miles.