RX - 3rd Gen (2010-2015) Discussion topics related to the 2010 - 2015 RX350 and RX450H models

The 3RX Gas Mileage Thread

Old 11-30-16, 05:25 PM
  #751  
LazyL
Driver School Candidate
 
LazyL's Avatar
 
Join Date: Jan 2016
Location: Sc
Posts: 6
Likes: 0
Received 0 Likes on 0 Posts
Default

2014 bought with 23k miles has about 32k now averaging 21 mpg on 93 octane.
Old 12-01-16, 07:31 AM
  #752  
ColAngus
Intermediate
 
ColAngus's Avatar
 
Join Date: Sep 2014
Location: Alberta
Posts: 300
Received 27 Likes on 25 Posts
Default

:FacePalm:
Why are so many people treating the onboard computer calc's as infallible when simply measuring the amount of fuel that went in and the mileage travelled is something that a kid in Grade-4 could do and it is an actual representation of... The amount of miles travelled, divided by the quantity of fuel consumed!??!!
Old 12-01-16, 11:43 AM
  #753  
JDR76
Lexus Champion
 
JDR76's Avatar
 
Join Date: Nov 2013
Location: WA
Posts: 12,328
Received 1,603 Likes on 1,021 Posts
Default

Originally Posted by ColAngus
:FacePalm:
Why are so many people treating the onboard computer calc's as infallible when simply measuring the amount of fuel that went in and the mileage travelled is something that a kid in Grade-4 could do and it is an actual representation of... The amount of miles travelled, divided by the quantity of fuel consumed!??!!
When I first got my RX, I did exactly that, and logged the miles traveled divided by the fuel consumed for a "real" calculation. In over 6 months doing that, my calculated mileage was never once off from the computer by more than 0.1 mpg, so I stopped the manual calculation.
Old 12-02-16, 07:29 AM
  #754  
lexus114
Lexus Champion
 
lexus114's Avatar
 
Join Date: Aug 2007
Location: Bethlehem Twsp. Pennsylvania
Posts: 4,507
Received 35 Likes on 34 Posts
Default

Originally Posted by JDR76
When I first got my RX, I did exactly that, and logged the miles traveled divided by the fuel consumed for a "real" calculation. In over 6 months doing that, my calculated mileage was never once off from the computer by more than 0.1 mpg, so I stopped the manual calculation.

i have noticed mine is very close as well. but its dead on when traveling on the highway.
Old 12-05-16, 12:18 PM
  #755  
coachlkg
Rookie
 
coachlkg's Avatar
 
Join Date: Nov 2013
Location: IN
Posts: 89
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by JDR76
When I first got my RX, I did exactly that, and logged the miles traveled divided by the fuel consumed for a "real" calculation. In over 6 months doing that, my calculated mileage was never once off from the computer by more than 0.1 mpg, so I stopped the manual calculation.
My experience also.
Old 02-18-17, 04:43 AM
  #756  
jjconti53
Driver School Candidate
 
jjconti53's Avatar
 
Join Date: Feb 2017
Location: NJ
Posts: 5
Received 0 Likes on 0 Posts
Default Gas mileage

i recently bought a 2013 rx350. What is the best gas mileage I should expect for highway driving? Locally it sometimes is 15. I am getting around 22 mpg on the highway
Old 02-18-17, 04:41 PM
  #757  
gpb127
Driver School Candidate
 
gpb127's Avatar
 
Join Date: Dec 2014
Location: FL
Posts: 16
Received 3 Likes on 2 Posts
Default 8164 mile trip to Key West

My wife and I have returned from our epic trip to Key West in our 2011 RX350. The car was fully loaded with stuff, ( I brought a bag).
Most of the way we were on the Interstate highways at 70 to 75 mph. In WY and MT it was 80mph.
Mostly used quality premium fuel, 91 - 93 octane, with maybe 5 tanks of Plus, 89 octane.
So 8164 miles divided by 379.7 gallons = 21.5 mpg. We got the best mileage in the flat lands from Texas through Florida - 23 to 24 mpg.
When we got back home the odometer read 56500 miles.
Back to the snow and rain for us,
George
Old 02-20-17, 07:58 AM
  #758  
coachlkg
Rookie
 
coachlkg's Avatar
 
Join Date: Nov 2013
Location: IN
Posts: 89
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by jjconti53
i recently bought a 2013 rx350. What is the best gas mileage I should expect for highway driving? Locally it sometimes is 15. I am getting around 22 mpg on the highway
I just drove to Florida and back (2105 miles) in my 2013 AWD RX 350. I averaged 22.2 MPG with 95% of my driving on Interstate.
Old 02-20-17, 03:12 PM
  #759  
erom43
Rookie
 
erom43's Avatar
 
Join Date: May 2013
Location: FL
Posts: 70
Likes: 0
Received 3 Likes on 3 Posts
Default Expect 23-24 MPG

Originally Posted by jjconti53
i recently bought a 2013 rx350. What is the best gas mileage I should expect for highway driving? Locally it sometimes is 15. I am getting around 22 mpg on the highway
I have had my 2013 RX 350 for almost four years now. Your local mileage will likely vary from around 15.0 to up to 18.5, because there are so many variables. However, on the interstates, doing between 65 and 75 MPH, you can expect around 22.5 to 23.5 on average. Premium fuel is not needed, or will unlikely increase those numbers.
Old 02-27-17, 04:36 AM
  #760  
snowman22
Rookie
 
snowman22's Avatar
 
Join Date: Aug 2013
Location: Ny
Posts: 92
Likes: 0
Received 0 Likes on 0 Posts
Default about right

Originally Posted by erom43
I have had my 2013 RX 350 for almost four years now. Your local mileage will likely vary from around 15.0 to up to 18.5, because there are so many variables. However, on the interstates, doing between 65 and 75 MPH, you can expect around 22.5 to 23.5 on average. Premium fuel is not needed, or will unlikely increase those numbers.
i would agree with your assessment except for the 15-18 mpg unless your from a warmer climate than me. In Buffalo my low end in winter temps-- not driving in snow--'was a nightmare of 11-12 local driving.
Old 02-27-17, 08:51 AM
  #761  
erom43
Rookie
 
erom43's Avatar
 
Join Date: May 2013
Location: FL
Posts: 70
Likes: 0
Received 3 Likes on 3 Posts
Default

Originally Posted by snowman22
i would agree with your assessment except for the 15-18 mpg unless your from a warmer climate than me. In Buffalo my low end in winter temps-- not driving in snow--'was a nightmare of 11-12 local driving.
I have never experienced numbers that low. My driving is in Florida, and sometimes North Carolina, but the results are similar. I will say that there have been at least two instances where we got unusually low numbers (~14 local, 21 highway). In both cases I attributed the variance to gasoline quality from a big box store. Bad gas can be a big mileage killer. That being said, local driving conditions, and technique can cause a wide variance. Being heavy on the gas leaving a full stop might be the biggest culprit of all. But, a large number of stops, high idle time, and being heavy on the gas, and heavy on the brakes, will have a significant affect on the mileage. Not sure of the effect of cold verses warm weather gas formulas.
Old 03-06-17, 04:52 AM
  #762  
snowman22
Rookie
 
snowman22's Avatar
 
Join Date: Aug 2013
Location: Ny
Posts: 92
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by erom43
I have never experienced numbers that low. My driving is in Florida, and sometimes North Carolina, but the results are similar. I will say that there have been at least two instances where we got unusually low numbers (~14 local, 21 highway). In both cases I attributed the variance to gasoline quality from a big box store. Bad gas can be a big mileage killer. That being said, local driving conditions, and technique can cause a wide variance. Being heavy on the gas leaving a full stop might be the biggest culprit of all. But, a large number of stops, high idle time, and being heavy on the gas, and heavy on the brakes, will have a significant affect on the mileage. Not sure of the effect of cold verses warm weather gas formulas.
Those low numbers are what prompted me to trade that car in for the RX450h. The Hybrid is as advertised. Great mpg summer and winter. Though winter numbers are about 15 percent lower. I also use Sunoco gasoline. I have had five hybrids. I learned a long time ago to go easy on the pedal. I tried everything with that 2013 RX to no avail. Dealer several times to check. Never found anything wrong. I just gave up. I pity whoever bought it.
Old 03-06-17, 11:59 AM
  #763  
allendsup2
Rookie
 
allendsup2's Avatar
 
Join Date: Jan 2017
Location: MINNESOTA
Posts: 47
Received 0 Likes on 0 Posts
Default

Originally Posted by snowman22
i would agree with your assessment except for the 15-18 mpg unless your from a warmer climate than me. In Buffalo my low end in winter temps-- not driving in snow--'was a nightmare of 11-12 local driving.
I am in Minneapolis and have not seen numbers such low even though weather is cold. My local driving (mix of local + highway) gives me around 17-18 (Winter). My office is just 3.5 miles from my home and that is what eating into my mpg.
Old 03-13-17, 04:35 AM
  #764  
snowman22
Rookie
 
snowman22's Avatar
 
Join Date: Aug 2013
Location: Ny
Posts: 92
Likes: 0
Received 0 Likes on 0 Posts
Default low numbers

Originally Posted by allendsup2
I am in Minneapolis and have not seen numbers such low even though weather is cold. My local driving (mix of local + highway) gives me around 17-18 (Winter). My office is just 3.5 miles from my home and that is what eating into my mpg.
i would have been more than happy with 17-18. Just was not happening. Let me add-- at one point I actually hit a low of 8 mpg. Winter driving. Snow on road. Went to,dealer to no avail.
Old 03-13-17, 06:06 AM
  #765  
coachlkg
Rookie
 
coachlkg's Avatar
 
Join Date: Nov 2013
Location: IN
Posts: 89
Likes: 0
Received 0 Likes on 0 Posts
Smile

Originally Posted by snowman22
Those low numbers are what prompted me to trade that car in for the RX450h. The Hybrid is as advertised. Great mpg summer and winter. Though winter numbers are about 15 percent lower. I also use Sunoco gasoline. I have had five hybrids. I learned a long time ago to go easy on the pedal. I tried everything with that 2013 RX to no avail. Dealer several times to check. Never found anything wrong. I just gave up. I pity whoever bought it.
Doesn't the hybrid version require premium gas? I just filled my tank with regular for $1.89/gal, so 13 city & 22 highway isn't so bad right now.

Thread Tools
Search this Thread
Quick Reply: The 3RX Gas Mileage Thread



All times are GMT -7. The time now is 04:15 PM.