The 3RX Gas Mileage Thread
#781
Mileage back to normal?
I too have had an unexplained loss of mileage. My 2013 RX with 60K on it would get a very consistent 23.5 average on the interstates. All of a sudden, it dropped to 21.5. Local driving seems to follow the same pattern. The only variable would be the gasoline source. I used to attribute the loss to the local Costco station, but now it is appearing with other sources as well. One possibility is that more local stations have increased their ethanol percentage to the maximum.....unlikely? Is it possibly engine related? Could I need new plugs, cleaning or tune up? Anyone else have similar mileage drop?
#783
Lexus Champion
I just brought home a 2015, FWD, CPO, had less than 15k miles. Dealership told me the computer was programmed to get best fuel economy using low octane regular. Drove it 11hrs home mostly 75-80 mph highway speeds. Haven't calculated exact mileage, but it was very good, I'd guess right 25mpg. Used low test fuel.
Now here's a question...Are these 3rd Gen. RX350's designed to tolerate ethonol blends common now in low test gas????
Now here's a question...Are these 3rd Gen. RX350's designed to tolerate ethonol blends common now in low test gas????
thats boloney they did not remap the ecm for lower octane fuel. its used as a selling advantage and that's it. nothing more.
#784
I purchased a 2014 CPO 350 last year with 9,000 miles on the clock. The first tank of regular ugly delivered 17 mpg and the car was sluggish. I ran a tank of gas with fuel system cleaner thru it and the mpg went up to 21 in town with a big improvement in performance. Since then I am careful to only use top tier gas and use a cleaner at least every 5000 miles. I am averaging 21 in town and have seen 26-27 on the highway as long as the speed is below 70. Above that the mpg drops to around 23. These care are not meant to be mileage champs. My wife's 2013 450H gets nearly the same on the highway, but delivers 30-31 in town. We love both cars and will drive them till they wear out. I hate the change Lexus made in the 2016 RX!!!!!!!
#785
I have a 2015 AWD with 35Kish miles, and I'm seeing 21-23 highway (75mph), and consistent 19-20 city. Combined is usually at the 22 mark for the week, with 60% of the driving being on the highway, and not a lot of stop and go in town. To say the least, better than the 17mpg I was getting in my 2013 4Runner!!
#786
I too have had an unexplained loss of mileage. My 2013 RX with 60K on it would get a very consistent 23.5 average on the interstates. All of a sudden, it dropped to 21.5. Local driving seems to follow the same pattern. The only variable would be the gasoline source. I used to attribute the loss to the local Costco station, but now it is appearing with other sources as well. One possibility is that more local stations have increased their ethanol percentage to the maximum.....unlikely? Is it possibly engine related? Could I need new plugs, cleaning or tune up? Anyone else have similar mileage drop?
#787
Should be happy
I purchased a 2014 CPO 350 last year with 9,000 miles on the clock. The first tank of regular ugly delivered 17 mpg and the car was sluggish. I ran a tank of gas with fuel system cleaner thru it and the mpg went up to 21 in town with a big improvement in performance. Since then I am careful to only use top tier gas and use a cleaner at least every 5000 miles. I am averaging 21 in town and have seen 26-27 on the highway as long as the speed is below 70. Above that the mpg drops to around 23. These care are not meant to be mileage champs. My wife's 2013 450H gets nearly the same on the highway, but delivers 30-31 in town. We love both cars and will drive them till they wear out. I hate the change Lexus made in the 2016 RX!!!!!!!
#788
Driver School Candidate
After a little over a year of ownership, our 2013 AWD has an average MPG of 18.5 and we're in NJ. My best was 20.9 and our lowest was around 16 in the winter, and we've been getting better mileage as of late. Driving is a mix of suburbs and hilly local highways.
#790
You may not be far off.
My 2013 FWD should get slightly better than your AWD. My highway (interstate) driving has been a fairly consistent 23-24 MPG, for over 60K miles. However, my local driving has ranged from 15 MPG to around 18 MPG, depending on type of driving, conditions......and who is driving. Your 18.5 for mixed driving in a hilly area might not be far off. Next time you take a long trip, check the interstate mileage.
#791
My 2014 RX 350 is getting around 20-21mpg in traffic here in ATL. I will usually see 25-26 on the interstate running at 70-75 MPH. I always use regular gas. About every six months I will run a tank with a fuel system cleaner added. This replaced a Honda Accord V6 that got 35 highway and the trade off is worth it. I love this car. My wife has a 2013 450H that delivers 28 MPG in town and will do 30 if we don't get over 75 MPH. It has 75,00 miles on it and still has the original brake pads on it. We will probably drive these cars till they wear out! After all they are both Toyotas in nicer clothing!!
#792
Rx350 2010 fuel consumption
I have been reading the fuel and mpg thread and i have some questions. How accurate is the odo computer ?
My mpg are nowhere like other rx driver.
My computer is alway showing 18-19 L/100 km so this is 12-13 mpg which is very low IMO.
is there anyway to reset it ? I cant imagine what will be my mileage in winter lol.
My mpg are nowhere like other rx driver.
My computer is alway showing 18-19 L/100 km so this is 12-13 mpg which is very low IMO.
is there anyway to reset it ? I cant imagine what will be my mileage in winter lol.
#793
notorious for bad mpg
I have been reading the fuel and mpg thread and i have some questions. How accurate is the odo computer ?
My mpg are nowhere like other rx driver.
My computer is alway showing 18-19 L/100 km so this is 12-13 mpg which is very low IMO.
is there anyway to reset it ? I cant imagine what will be my mileage in winter lol.
My mpg are nowhere like other rx driver.
My computer is alway showing 18-19 L/100 km so this is 12-13 mpg which is very low IMO.
is there anyway to reset it ? I cant imagine what will be my mileage in winter lol.
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Alving (07-14-24)
#794
I dont think your 9-11 mpg or my 12-13 are normal.
#795
I have been reading the fuel and mpg thread and i have some questions. How accurate is the odo computer ?
My mpg are nowhere like other rx driver.
My computer is alway showing 18-19 L/100 km so this is 12-13 mpg which is very low IMO.
is there anyway to reset it ? I cant imagine what will be my mileage in winter lol.
My mpg are nowhere like other rx driver.
My computer is alway showing 18-19 L/100 km so this is 12-13 mpg which is very low IMO.
is there anyway to reset it ? I cant imagine what will be my mileage in winter lol.
That being said, 12-13 mpg seems low, but could be correct if you do a lot of local, and stop and go driving, or are on the gas and brake pedals alot. I normally get 15-18 mpg local, and 23+ mpg on the interstates, but have gotten as low as 14 mpg local.