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2013 Lexus GS 350 Long-Term Road Test

Edmunds.comEdmunds.com Member, Administrator, Moderator Posts: 10,316
edited September 2014 in Lexus

image2013 Lexus GS 350 Long-Term Road Test

Our 2013 Lexus GS 350 lived up to its EPA highway fuel economy claims during our Austin road trip, and its in-car mpg gauge didn't exaggerate.

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Comments

  • tatermctatumstatermctatums Member Posts: 107
    I've noticed the same thing with my 2010 VW Jetta TDI. Every tank my calculated mpg is higher than what the computer estimates. I was surprised that a car whose main selling point is exceptional mpg would have a MPG gauge that under estimates on every tank. Personally I prefer it to guess low instead of high.
  • greenponygreenpony Member Posts: 531
    I use a Scangauge, and it can be calibrated based on what you calculate at the pump. Over the course of one year I found that my fuel consumption is +5.7% over the Scangauge's assumption for my engine size, so that is where I set it and leave it. With variations in fills I could be +/-5% for an individual tank, but the long term average is accurate. The neat thing is the ability to calibrate the gauge, which you can't do with an in-dash display.
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