View Poll Results: What's your 2010 RX 350 mpg on average
< 18 mpg
5
17.86%
18 - 20 mpg
8
28.57%
20 - 22 mpg
6
21.43%
> 22 mpg
9
32.14%
Voters: 28. You may not vote on this poll
What's your car MPG ?
09-04-09, 03:07 PM
#3
best tank yet was 26.5
haven't had less than 23.8
computer calculation is usually a tad less manual calculation
previous vehicles have always overestimated
haven't had less than 23.8
computer calculation is usually a tad less manual calculation
previous vehicles have always overestimated
Last edited by jskennedy; 09-05-09 at 02:04 PM.
09-05-09, 05:43 AM
#6
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Location: Arizona
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All of you guys are getting better mileage than I am. (Mine's FWD.) I get between 21.5 and 22 on the highway, assuming that the trip computer is accurate. This is less than my '07 got. In town mileage is about 20 (suburban driving), about the same as my '07 got. I've got about 3000 miles on the new one.
09-05-09, 08:01 AM
#7
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I average 18 mpg and 20 mph after 6000 miles. Mostly heavy city traffic in a daily commute. I do not care for Eco light. Still, I average 3 mpg better than I did in my 05 MDX.
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09-05-09, 07:01 PM
#10
I drive mostly around town with lots of stop and go. I was amazed that on my first tank of gas from the dealer I did actually get a little over 18mpg. After that I started to fill up at a local Shell station here in Dallas. I notice that the pump says, "may contain up to 10% Ethanol". Using Shell Premium gas with 10% Ethanol (always from the same station), I have seen it go as high as 16mpg and as low as 13mpg, but I would say the average is about 15mpg. I have occasionally tried a couple other stations but I have not been able to reach 18mpg again since that first tank from the dealer--maybe they can get good gas without the Ethanol?
By the way, I always manually calculate my mileage and it is always lower than the Lexus trip computer--don't believe the numbers from the trip computer they are always over inflated. Each time I fill up, I just divide the miles driven on the odometer trip meter by the number of gallons that I fill up with, and then I always reset the trip meter--I believe this is the most accurate method to calculate your mileage.
By the way, I always manually calculate my mileage and it is always lower than the Lexus trip computer--don't believe the numbers from the trip computer they are always over inflated. Each time I fill up, I just divide the miles driven on the odometer trip meter by the number of gallons that I fill up with, and then I always reset the trip meter--I believe this is the most accurate method to calculate your mileage.
09-05-09, 07:16 PM
#11
... ...By the way, I always manually calculate my mileage and it is always lower than the Lexus trip computer--don't believe the numbers from the trip computer they are always over inflated. Each time I fill up, I just divide the miles driven on the odometer trip meter by the number of gallons that I fill up with, and then I always reset the trip meter--I believe this is the most accurate method to calculate your mileage.
I also calculate MPG manually... I got the same results as you said above, lower than RX's trip meter.
09-05-09, 07:45 PM
#12
For the last two weeks I've been experimenting with 89 octane VS 93 (91 is the recommended). All I can say is it's not worse and could be just a skosh better but so far too close to call. Unlike other parts of the country, our octane ratings are 87, 89, & 93 in Georgia. And yes, all the pumps say 'may' (they do) contain up to 10% ethanol.
09-05-09, 08:03 PM
#13
Both you and Bukse have it right on the best way to calculate the mileage. On my 03 RX300 I usually got slightly less than the computer too. But surprisingly and consistently the computer on our 450h is (very slightly) less than what I get when I measure miles against gallons. I could understand once in a while but so far, it's every time I manually checked.
For the last two weeks I've been experimenting with 89 octane VS 93 (91 is the recommended). All I can say is it's not worse and could be just a skosh better but so far too close to call. Unlike other parts of the country, our octane ratings are 87, 89, & 93 in Georgia. And yes, all the pumps say 'may' (they do) contain up to 10% ethanol.
For the last two weeks I've been experimenting with 89 octane VS 93 (91 is the recommended). All I can say is it's not worse and could be just a skosh better but so far too close to call. Unlike other parts of the country, our octane ratings are 87, 89, & 93 in Georgia. And yes, all the pumps say 'may' (they do) contain up to 10% ethanol.
09-05-09, 09:03 PM
#14
Just curious if Lexus also suggests 450h's 2GR-FXE Atkinson cycle engine should use Premium gas... (I don't want to argue if RX has to use 93 or not, and don't want to hijack this thread...) But it's interesting to know if 91/93 can really make better MPG than 89 or lower.
09-06-09, 01:16 AM
#15
I have experimented with both 91 octane (that's the premium in my state) and 89 octane with 10% ethanol. I found no appreciable difference at all on the gas mileage between the two. Thus, I have been using the 89 octaner on my LS460L and also on our new RX450h. I started out by using the 91 octane on the RX450h, but why pay 30 cents a gallon more for the 91 octane when 89does just as well?
Well, it seems to be some kind of profit-seeking or mechanical reasons to appoint the premium octane as the primary gas.
Btw, you Hybrid rxers shouldn't come here to vote.
