By Debra M
Went on a very long - 4,000 mile - journey for graduation two weeks ago. Drove from Texas to the east coast and back again. In evey non-hybrid car I've had, the mpg rate would always increase with highway driving. No so with the RX 400h (2007). It started out a with a wonderful 27.4 mpg… and kept dropping by tenths as we went along. Now, it has rested at 26.9. I can notice this mpg decrease in my everyday driving. What happened? Can it be improved? I changed the oil and cleaned out the air filter immediately after my return. Does it need a tune up? We've got 95,000 miles on it now. Thanks for your advice.
Hi All, Tought I would show the reliability of these great cars.
My RX400h SE-L is still in great shape and still on the same Hybrid battery from new!
It's been serviced by Lexus Dealer twice a year for it's entire life so far.
Current mileage just about to go up to 250.000
Can any one else add to the list of 200.000 mile RX models?
Hi i'm new to the forum, I searched already if this subject exists, didn't see anything close to my situation. I have a 1994 Lexus LS400. I bought the car from a sketchy guy, but the car was clean and i believed 178k miles sounded right. after owning the car a month I Car Fax'd it finding out that as of August 2007 it had 234k miles, and May 2010 it was found to have 190k miles. the next owner drove it to 246k miles as of August 2012. within the same owner, during another service, it was documented at 208k miles. He then sold it to me at 178k miles. I know he rolled it back and tampered with it, because the capacitors went out (Normal issue) and i had a professional change them. This car has OBD1 so I don't completely know how to roll it forward to be honest with the mileage, or even if its legal. any suggestions, thanks!
I have a 2013 ES 300h. I bought it January 2013 and already have more than 72,500 miles on it. Yes, I know, I drive a lot, which is why I bought this particular car. I wanted comfort and good gas mileage. Up until Feb of this year I was consistently getting between 36-38 mpg. In stop and go traffic on the LA freeways I would get 41-43. Suddenly the mileage started going down and now it's at 32-34 mpg. After a fill-up, I'll get the 36 mpg until I hit about 7/8 to 3/4 of a tank. Then it drops. I also seem to get better mpg on highway; it used to be the other way around. The battery never seems to charge all the way. I have done the following to try and improve the mileage:
Increased tire pressure Oil changes New tires Fuel injector cleaning Replaced air filter Checked the spark plugs Used Chevron instead of Costco gas Took it to the dealer to have the battery checked out Has anyone else had the same or similar problem? Any suggestions about what caused the mileage to degrade?
I found something online about the rear brakes causing drag and degrading the mileage on a Prius. That's my next step but I thought I also post here.
Any suggestion is welcome.
I own a 2013 RX 450h and from the day I purchased it I have averaged 24mpg, bouncing from 23-25mpg highway mileage, with anywhere from 22-26mpg city... a far cry from the 28/32mpg advertised. The dealership has reset my ECM three times, changed the inflation on the tires four times, and added a special spoiler and "areo fins", all with 0 effect. After pestering Lexus for over a year, I was told that 24mpg is NORMAL for this car, and there is nothing wrong with it. I have polled other 450h drivers and the vast majority state their mileage is the same, around 24-25mpg. Only 3 have said they get the promised 28/32mpg.
I intend to file a class action lawsuit against Lexus for artificially inflating their MPG rating on their hybrid vehicles in order to increase sales and justify the massive price difference between the hybrid and regular models.
I am polling all 450h owners, 2010-2015, to find out what their average mileage is. If a significant number are having the same issue, I will begin the process of filing on behalf of all 450h owners.
Again, this is only for 2010-2015 models. Thank you in advance for posting your MPG experiences.