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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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I've averaged almost 26mpg (measured at pump) over my first 2500 miles. I average ~30 mins/ride, 80-90F Temperatures, and 2/3 highway/ 1/3 city. Once warmed up, city mileage is 26-28 mpg with heavy A/C, and highway is ~27 mpg at 60-65mpg, dropping to 23-24mpg at 75mph. My worst tank, 22.1mpg, was with 5 adult passengers and 75-80 mph, combined with an "idling" tour of NYC in boiling hot weather. I just read a San Diego Trib revue claiming he only got 16 mpg driving to Arizona at 75mph on cruise control. He further claimed this was much worse than the gas-only version. I can't imagine how his mileage could be this bad, unless he was overloaded and driving into a 30mph headwind the entire trip! Tank Log (www.greenhybrid.com) MPG ,Miles ,Gallons of Fuel , Degrees F, Minutes Per Ride 26.6 341 12.8 90 30 22.1 250 11.3 90 15 24.8 334 13.5 90 20 26.6 221 8.3 80 30 26.6 334 12.6 80 30 25.0 308 12.3 80 15 26.1 308 11.8 90 30 27.5 320 11.7 80 30 26.2 227 8.7 80 20 |
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Had the 5000 mile check-up last week after a trip from Atlanta to upstate New York, New York City, Boston, Philadelphia and Washington. Great performance but disappointed with the mileage a little. Just getting 24.5 for the 2300 miles. Still, better than any SUV we have owned. The drive is still smooth. The navigation will save any marriage! 
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| Just passed 5000 miles this week and my average mileage is 26.6 mpg. My latest tank of 352 miles was 28.6 mpg with a ~50/50 mix of City/Highway with no A/C on regular gas. Humidity was down this week so I did notice a 1-2 mpg improvement while not using the A/C. I'm thrilled with the power and fuel savings vs. my former ML430 (similar 268 hp, but averaged 14 mpg over 87,000 miles). | |
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After the initial dealer fill up I had 324 miles on my 400h. Since then I have driven 3814 miles and used 144.481 gallons of fuel which translates into 26.398 mpg. My driving included a 2000 mile road trip which had fairly level stretches and mountain passes up to 7500 feet. The remaining miles were approximately 90% highway and 10% city. I generally leave the AC on auto at 73 degrees and the day time temperature has been in the 75-85 degree range. I use cruise control whenever it is safe to do so and have been using 87 octane fuel (Chevron, Shell, and Union 76). A fellow 400h driver told me that he gets better mileage with 92 octane fuel. I filled my last tank with premium and according to the navigation screen I am getting 28.3 mpg. Preliminarily it appears that I may be getting 2 mpg higher than on the 87 octane. The performance didn't seem to be affected. The economics does not justify the additional 20 cents per gallon cost so I will fill up one more tank with 92 octane to verify the mileage and then return to 87 octane. My 400h is getting about 5 mpg better than my previous 2003 RX300. I love the car and am happy with the increased fuel economy, reduced emmisions to the environment, and the increased performance. I plan to keep the car until it reaches 70-80,000 miles. The RX400h is not a Prius nor a Porsche. Before buying you should think trough what you want out of your automobile. I did and am getting just about what I expected.
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Replying to: mirex (Aug 11, 2005 10:35 am) If you'd add all of our miles together and consider all terrains+driving styles, that's a lot of data making the 26-27mpg a scientifically reasonable expectation for this version of 400h on 87octane gas. And remember, this is the summer of heat waves. When things cool down after moonsoon rain in FL, I'd run errands with the AC off, just to see my mpg goes up from 26+ to 29+ with 100miles+ used in the calculation (I reset it every new gas tank). I believe all your figures would go up around 28-29mpg comes autumn.
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Replying to: timothyt (Jul 25, 2005 5:08 pm) Keep an eye on the real time MPG bar graph. Sometimes, by relaxing the gas pedal a tiny bit (on straight away road), you'd see the bar graph shows a significant increase in MPG, for almost the same speed or not too much loss in speed. Drive like that, and they all "add" up. |
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Replying to: gagrice (Jun 30, 2005 5:23 am) |
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I have had my 400h and am very disappointed with the city gas mileage. I have only been getting between 19 and 22 city. It sure is a long way from the 31 mpg. they advertised. I think it is a joke to be that far off.
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Replying to: maxamigo (Aug 11, 2005 6:40 pm) There may be a sweet spot in the weather in fall and spring, but in general Hybrids lose some MPG in cold weather. |
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Replying to: azbob (Jul 09, 2005 9:23 am) |
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