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

revelations time again,,, mpg ++ math problem

Thread Tools
 
Search this Thread
 
Old 09-24-08, 02:08 PM
  #31  
CK6Speed
Lexus Test Driver
iTrader: (1)
 
CK6Speed's Avatar
 
Join Date: Nov 2002
Location: HI
Posts: 7,719
Likes: 0
Received 3 Likes on 2 Posts
Default

Originally Posted by jcat_GS3
yes, but the in car computer instantaneous mileage calculations are consistently off by a few mpg. And, if you haven't noticed, the range constantly changes, so it's not a very reliable source of information.
On my 03 with the nav screen the calculated tank average is off by about 0.2 MPG fairly consistently. I always do my own calculations by dividing miles traveled by gallons filled every time I fill up and compare it to the cars computer calculations. Surprisingly, my GS is off by less than 0.5. On my RX330 it used to be off by as much as 2 MPG.
Old 09-24-08, 02:21 PM
  #32  
vrferrari
Pole Position
 
vrferrari's Avatar
 
Join Date: Jul 2004
Location: Arizona
Posts: 264
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by CK6Speed
On my 03 with the nav screen the calculated tank average is off by about 0.2 MPG fairly consistently. I always do my own calculations by dividing miles traveled by gallons filled every time I fill up and compare it to the cars computer calculations. Surprisingly, my GS is off by less than 0.5. On my RX330 it used to be off by as much as 2 MPG.
That would be my observation as well. My NAV readouts for mpg are fairly conservative and my calculated mpg is usually anywhere between .2-.7 mpg better (depending on how much more highway driving I do), but that's not suprising given the ecu works on a closed loop program.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
don1
ES - 6th Gen (2013-2018)
4
01-01-15 02:42 PM
lexasgs400
LS - 4th Gen (2007-2017)
11
04-12-12 08:09 PM
MannyRCF
LS - 4th Gen (2007-2017)
61
02-07-11 12:47 PM
BAP077
IS - 2nd Gen (2006-2013)
11
11-15-09 01:41 AM
alexamparo
GS - 2nd Gen (1998-2005)
11
10-31-02 07:16 PM



Quick Reply: revelations time again,,, mpg ++ math problem



All times are GMT -7. The time now is 01:23 PM.