Average MPG for GS400 - Page 3 - ClubLexus - Lexus Forum Discussion

GS - 2nd Gen (1998-2005) Discussion about the second generation GS300, GS400 and GS430 (1998 - 2005)

Average MPG for GS400

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Old 01-31-14, 02:57 PM   #31
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I average 18-19 50/50 HWY/CITY.

I don't you can get 21+ if your GS4 was your DD to work everyday. Long trips shouldn't be accounted for because it's not average.
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Old 07-01-14, 12:52 PM   #32
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Thus makes me cry, I get 13mpg when I drive like I usually do, step on it and cruise 10 over speed limit, 17mpg driving like a grandma, I got 223k On chassis, rebuilt motor at 180k. I use standard castrol gtx 10-30 with a quart if Lucas oil stabilizer and tires should be around 36-40 psi. It's like there is no hope, this car is just that much of a gas hog
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Old 07-01-14, 02:14 PM   #33
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I'm lucky to get 16 out of mine.
gte swapped 99 gs
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Old 07-01-14, 05:34 PM   #34
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I just recently took a trip that was about 80-90% highway, and I got 23.5mpg average with additional weight of people and luggage. I usually get 17-18mpg in average driving, which is probably 50/50 city/highway. I do have a little bit of a lead foot with this thing though and I am usually toting people around

Stock gs430 on 245/45-17 tires.
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