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Lexus RX 400h - MPG-Real World Numbers

314 messages,  Last post on Mar 03, 2010 at 9:00 PM

You are in the Lexus RX 400h Forum. Your Host is pf_flyer

What is this discussion about? Lexus RX 400h, Fuel Efficiency (MPG), SUV


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#217 of 314
Re: Completely Mislead [timothyt] by hibred
Aug 09, 2005 (7:22 am)
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Replying to: timothyt (Jul 25, 2005 6:33 pm)

Re; BMW -- Ive owned 4 of them and have become friends with the service dept. Always something wrong. Same with the Porsche. The Lexus H I get in and drive knowing I will have a smile on my face.
Re the engine kicking in --- all cars have idiosincracys. How long have you been driving ?? This is a fine handling, driving car. sounds like you're a Chevy guy.
#218 of 314
Re: Completely Mislead [hibred] by rx400_owner
Aug 09, 2005 (12:07 pm)
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Replying to: hibred (Aug 09, 2005 7:22 am)

Don't be so quick to criticize others. There is a service bulletin out on a problem that might cause the behavior that timothyt complained about. Like you, I'm not experiencing the problem in my Rx400 but that doesn't mean he's wrong or imagining things. If the idle speed learning is the problem, it sounds like there is an easy fix.
 
A similar thing happened on steering problems. Some people were complaining about pull in their steering and some of us had Rx400's that tracked straight. Some dealers initially brushed off the owner complaints, but there are owners who have gotten it fixed (and at least one reported it was a learning problem). I wonder if some dealer techs aren't following the proper set up proceedures (or if Lexus is working bugs out of their set up process).
#219 of 314
Re: Completely Mislead [rx400_owner] by gunner
Aug 26, 2005 (9:43 pm)
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Replying to: rx400_owner (Aug 04, 2005 2:39 pm)

Thanks, The reving up is an excelleration or RPM increasing. Excelerating at a moderate pace the engine RPM'S Increase too much and the forward speed does not increase enough. Then the engine hangs at the high rpm and stays there for a while before decelerating. Also My 1997 Corvette gets 18-22 MPG average city and highway. On the open road my vette gets 28-29 MPG.????? It cost me $20k less than my Lexus.
#220 of 314
Re: Completely Mislead [mirex] by gunner
Aug 26, 2005 (9:58 pm)
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Replying to: mirex (Jul 30, 2005 10:46 am)

mirex, Thanks. My trips usually are 20 -50 miles. When I was up at Lake Tahoe the instermentation registered 33-37 MPG. where small trips around the Lake. I did get 28.75 MPG coming home in very hot weather. Once again my 1997 Chev Corvette gets 17-20 MPG in City, and 28-29 MPG at high speed on the highway.?????? I would thing your weather is cooler and more humid. This was the way it was at Lake Tahoe...
#221 of 314
Re: Completely Mislead [timothyt] by bainse
Oct 19, 2005 (11:29 am)
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Replying to: timothyt (Jul 25, 2005 6:33 pm)

What the heck?? With all respect, this seems kind of unbelievable. And I don't know what BMW vehicle you're talking about having the "same gas mileage" and "faster acceleration" ... certainly not any of the BMW SUVs. While this forum (and Lexus) can benefit from healthy criticisms, I have to wonder whether you really are a 400h owner, or a competing dealer or something!
#222 of 314
Re: Completely Mislead [timothyt] by rmdnet
May 25, 2006 (2:38 pm)
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Replying to: timothyt (Jul 25, 2005 6:33 pm)

Live in Jersey too. Have to drive 82 miles a day commuting (mostly on easton Ave then 287 up to Morristown). I'm getting between 25.4 and 26.2 mph according to the computer. The 26.2 came during a dreadful week of traffic when things were crawling. Not so bad for a heavy SUV. I'm more concerned about the whine on slow acceleration. Annoying in quiet neighborhoods. Do you have that?
#223 of 314
Lower gas milage by nigh
Jan 30, 2006 (9:14 pm)
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My 400h now has about 12000 miles on it. When we first got the car, we got about 26-27mpg and once I actually got 30-31mpg. NOW, we are getting 23-24mpg. What is going on here? We do not have a full carload of people and drive at a resonable speed.The dealer told us that they consider 17mpg "good". That sure is different from what they told us before the purchase of the car. We have bee using regular 87 gas. Any comments....Anne
#224 of 314
Re: Lower gas milage [nigh] by crawfish
Feb 20, 2006 (11:14 am)
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Replying to: nigh (Jan 30, 2006 9:14 pm)

It's winter time....from all I read, gas engine works longer and harder under even 50F, which means battery doesn't help much --- lower mpg.
#225 of 314
Re: Lower gas mileage [nigh] by kjoeb
Feb 25, 2006 (9:28 pm)
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Replying to: nigh (Jan 30, 2006 9:14 pm)

I just got mine and have been getting 21 to 23 MPG since day one. I did have high expectations, which justified the premium for the hybrid.
 
I called the Lexus hot-line to ask about it. They suggest I take it into the shop (appointment next Saturday). Lexus inferred this is not normal.
 
If there isn't anything wrong per the dealership, Lexus asked me to call them back. I hope they make it right.
 
To see your dealer saying to consider 17mpg "good," is disappointing to say the least. I'll post the dealers response too.
#226 of 314
Re: Lower gas mileage [kjoeb] by lexus400
Mar 24, 2006 (11:03 am)
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Replying to: kjoeb (Feb 25, 2006 9:28 pm)

I had this issue too; however I am finding that 22 mph is disappointing. They say that they didn't do the testing that resulted in the MPG on the sticker-and that they aren't touting the mpg as the reason to buy this car-rather it is the performance and the green aspects of the car. That is not what the dealer told me as I was considering the car-I would gather that the 330 has similiar performance. Cars rarely get the MPG posted on the window, but I feel that this is a significant difference when they are touting this as one of the reasons to spend the extra $$$$. I love being green friendly, but thought that the gas mileage was an aspect of the car being green friendly beyond the use of silver inside the car and the black steering wheel instead of the use of wood. They also tell me that it is based on my style of driving. I was getting 25 in the beginning and it has now dropped to 22-same person-same style-maybe even trying harder to coast and get the mileage up than when it was new--all to no avail.
 
I just want the vibration/shaking taken care of so that my teeth aren't like a baby rattle at 37-44mph.
 
Good luck-keep us posted.

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