Last post on Aug 02, 2011 at 5:40 AM
You are in the Lexus GS 450h
What is this discussion about?
Lexus GS 450h, Fuel Efficiency (MPG), Sedan
#85 of 93 Re: lifetime mpg [tricky73]
Oct 21, 2007 (4:57 am)
I have tried several tankfulls of premium and cannot see any change in mpg compared to regular.
Two factors are important, perhaps; 90% of my driving is stop-and-go, and I do not hotdog the car...i.e. braking is more important than acceleration. Intend going back to regular and continue monitoring mpg to hopefully add more data to an interesting attribute of the 450h.
To date the machine is flawless and much better suited to my needs than the 460L it replaced. I note my local volume dealer has ~ 40 460s' in inventory and only 1 450h. Does anybody have data on current buyers' model preferences?
Haven't heard/seen a peep re the LS 600h, although I saw one on the dealer showroom with a "sold" sign on the windshield. I am still intrigued with the glowing review in the current Consumers Report about the 460L...that is the anthesis of my experience!
#86 of 93 2009 GS450h fuel economy
Sep 17, 2009 (4:23 pm)
I have 6k miles on my GS450h, and the lifetime fuel economy reading is 26.1mpg. I have a city/highway mix of driving, on which my old cars got much less. (1998 Audi A4 2.8 got about 21.5, 1999 Jaguar XK8 convertible just over 20) I felt pretty good about these numbers, given the EPA estimates of 22/25 for the GS450h, until I saw comments here about folks getting 28+. I live in San Jose, California, and always use premium unleaded.
#87 of 93 Re: 2009 GS450h fuel economy [vigorlover]
Jan 08, 2010 (4:50 pm)
I now have 10k miles on my 2009 GS450h. After pushing the lifetime fuel economy to 26.5mpg in October (thanks to a couple of extended trips) I am back down to 26.1mpg. The last several tankfuls have been <26mpg, I wonder if the colder weather is bringing me down a little bit.
#88 of 93 Re: 2009 GS450h fuel economy [vigorlover]
May 10, 2010 (11:30 am)
I just got my 15k mile service on my GS450h at Lexus of Pleasanton (northern California) and I am at 26.2 mpg lifetime according to the computer. Holding pretty steady.
#90 of 93 Re: 2009 GS450h fuel economy [vigorlover]
Aug 31, 2010 (5:11 pm)
I am now at 20k miles on my GS450h and the lifetime readout of fuel economy says 26.4mpg.
Apr 26, 2011 (7:10 pm)
I am amazed at the mileage others are getting. I get 16-17mpg driving hard, 21-22 if I baby the car around town. Do you think something is wrong with it?
#92 of 93 Re: mileage [john522]
Jun 01, 2011 (4:21 pm)
I just got to 30k, and my lifetime readout says 26.4mpg. I am not an aggressive driver (anymore), but I don't think I baby the car. The gas pedal is a bit touchy, you have to be very steady to keep the speed just so. When my girlfriend drives my car she gets lower mileage than I get, and she is fairly jerky on the accelerator, not being used to driving the GS450h. So maybe there is nothing wrong with your car, just different driving styles or conditions.
I do probably 65% or so on the freeway. I know I get much better than the EPA estimate 25 freeway, but it also seems that I may get less than the 22mpg they quote for city driving. All-in-all, I am happy to be getting the mileage I am.
#93 of 93 RX350 Experience
Aug 02, 2011 (5:40 am)
Our 2006 RX350 has averaged 23.4 to 24 ever since we bought it new, slightly less in the summer. I think it is important to point out that 10% ethanol fuel WILL have a negative effect in the real world from mfg mileage claims (at least in our vehicle). Ethanol does not have the energy profile of regular gasoline, so there is a sacrifice in performance. Engines are being tuned better for this, but it is hard to change the thermal efficiency of 10% ethanol in gas.
I did notice that the new models claim that the engine will not start until 30 mph if driven carefully. Our engine normally kicks in at 5-7 mph which I never felt was where it should be - dealer doesn't seem to agree.