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Hybrid Vehicles Lexus RX 400h Lexus RX 400h - MPG-Real World Numbers
311 messages, Last post on Jul 08, 2009 at 3:52 PM
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Yesterday was the first anniversary of owning an RX400h and I took it in for an oil change with over 16,000 miles. I have been tracking mileage carefully and have an Excel spreadsheet to show both total and by tank mileage. My total mileage is 27.65 MPG. The by tank mileage varies from a low of 22 to a high of 30. The mileage readout in the car is almost always overly optimistic, by as much as 2 MPG. Of course all this data is not statistically significant without a few facts on conditions. - Primary location is South Florida, so a lot of flat ground - Air conditioner running almost all the time - 2 wheel drive - Regular gas only - Combination of stop-and-go, regular street, and highway driving - A lot of driving too fast, 80+ MPH - Driving conditions around Miami do not encourage slow starts and moderate speeds. Bottom line is that I know I could do better if I drove slower, started slower, and did not run the A/C ALL the time. But if I just wanted to save gas I would have bought a Prius. I enjoy the comfort, luxury features, and power too much. And I really like driving in the HOV lane! My biggest concern is future maintenance support and trade-in value. I don't see any advertising by Lexus about the 400h but a deluge of advertising for the other cars. I think that is a very bad sign for us owners.
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Replying to: hilandr05 (Mar 04, 2007 5:42 am) |
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For my '07 400h that was purchased in early January, I now have 1,700 miles and mileage is as follows: 1. During the cold month of February, I was averaging about 24 with regular gas. With premium or midgrade I was getting 26.4. 2. Since temps have risen above 60 F, I am now averaging 29.5 with midgrade gas. I'm very happy with the MPG. |
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Replying to: rockville1 (Mar 14, 2007 9:26 am) |
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My 2006 400 h has over 35,000 miles, averages 28 MPG over all with little cruise control. Most driving is around the city, with frequent stops and that decreases the MPG.
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Replying to: kaperino (Mar 26, 2007 3:08 am) |
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2 questions related to MPG: -Mine 2007 manual is recommending premium gasoline (91 octane or above). I've been reading the 2006 suggested regular gas. Since I assumed they are the same engine - does it matter? -is there a "master" button to show the overall MPG since new? Thanks in advance. |
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| Bought my 2006 in 2005. Have 35,000 miles. Specs recommended 91 or higher. I used the higher grade ( premium) for a year and switched to middle grade. Just a mile or so difference per gallon. Master button? Not sure of the question. I know of no other display of MPG other than on the trip information screen | |
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Replying to: rockville1 (Mar 14, 2007 9:26 am) I have a 2002 LS430. The owners manual indicates that 91 octane is appropriate. Of course 91 Octane fuel in not available at the pump, at least where I buy fuel here in the Mid-Atlantic. So at every fillup I merely compute the number of gallons needed, divide this by 3 and pump the 87 first and then top it off with 93. While this might sound strange for the owner of a $60k car to do this to save a dollar or two at a fillup, I ask you this. If you saw a dollar one the street would you pick it up? If so this is how I find a dollar in the street at least once or more a week. There is usually a 20 cent difference in 87 and 93 gas. So pumping 5 to 7 gallons of 87 at 20 cent less per gallon equals $1 to $1.40 per tank full. I think if you read the owners manual for you Lexus RX400h you will find out that 91 octane fuel is recommended. |
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Replying to: rockville1 (Mar 14, 2007 9:26 am) maybe you recall we bought our RX400s on same day, same dealer. No surprise, but driving styles can make a big difference. My wife likes the feel of G-forces, so she gets about 26. I try to ease into it - I use the visual of not trying to smash marshmallows if they were on gas pedal. whimpy i know, but i get 29+ combo hwy/town. a few times i have tried to really go easy to keep it on electric only as long as possible (and took battery bars down to purple). that experience gave me 32 mph around town. so lesson is, mileage varies by driver, and yes, cold weather did lower mileage. unscientific, but if i had to peg a 'real world' number under 'normal varied conditions, with avg driver' i would put the rx400 at about 27 mph. glad you enjoing the RX400.
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