whats your mpg on RX450h?
Pole Position
Joined: Oct 2005
Posts: 373
Likes: 5
From: WA
I trust you've seen this sticky thread ....
https://www.clublexus.com/forums/hyb...on-rx450h.html
Our new 2015 RX450h is averaging 28mpg.
https://www.clublexus.com/forums/hyb...on-rx450h.html
Our new 2015 RX450h is averaging 28mpg.
Rookie
Joined: Aug 2013
Posts: 92
Likes: 1
From: Ny
I trust you've seen this sticky thread ....
https://www.clublexus.com/forums/hyb...on-rx450h.html
Our new 2015 RX450h is averaging 28mpg.
https://www.clublexus.com/forums/hyb...on-rx450h.html
Our new 2015 RX450h is averaging 28mpg.
Rookie
Joined: Aug 2013
Posts: 92
Likes: 1
From: Ny
I don't live in San Fran, but have driven RXh for about 10 years now in all sort of terrain and situations. Where I live in SoCal, there are plenty of hill climbs and mix of traffic If I elect to get into it (I try not to). 
While people can debate the generalities I'm going to say, my belief on both my former RX400h and present RX450h (same hybrid tech) is that I also achieve only in the low 20's with short, less than 10-mile errands around town. When I do trips that are greater in distance, not even on the interstate, or mix those in with my short errands that are more frequent, I average around 24-25 most of the time -- and that I know for a fact is because I love my AWD take-offs, and using that torque clobbers MPG. When I do longer road trips, MPG goes up to 26-31 dependent if I'm overly agressive with speed and when I do a lot of hill climbing that will bring it down to the lower end.
...therefore, my belief is and always will be, that to get the best mileage out of today's RX Hybrid, you must allow the hybrid to fully warm up -- only short trips will not allow it to achieve what's possible. Speed over 55-60, pressing the accerator too hard at take-off, and climbing hills also puts a damper on achieving the best mileage. As much as I love RX and the concept of hybrids which I've recommended to many over the years, my suggestion is when you start looking for your next ride, if you are going to always do short trips, a hybrid with today's technology may not be the optimum solution if MPG is your primary objective.
Good luck.
While people can debate the generalities I'm going to say, my belief on both my former RX400h and present RX450h (same hybrid tech) is that I also achieve only in the low 20's with short, less than 10-mile errands around town. When I do trips that are greater in distance, not even on the interstate, or mix those in with my short errands that are more frequent, I average around 24-25 most of the time -- and that I know for a fact is because I love my AWD take-offs, and using that torque clobbers MPG. When I do longer road trips, MPG goes up to 26-31 dependent if I'm overly agressive with speed and when I do a lot of hill climbing that will bring it down to the lower end....therefore, my belief is and always will be, that to get the best mileage out of today's RX Hybrid, you must allow the hybrid to fully warm up -- only short trips will not allow it to achieve what's possible. Speed over 55-60, pressing the accerator too hard at take-off, and climbing hills also puts a damper on achieving the best mileage. As much as I love RX and the concept of hybrids which I've recommended to many over the years, my suggestion is when you start looking for your next ride, if you are going to always do short trips, a hybrid with today's technology may not be the optimum solution if MPG is your primary objective.
Good luck.
Moderator
Joined: May 2012
Posts: 1,263
Likes: 15
From: Florida
I agree with everything you state. But--- one vehicle that would perform as the above message would like is the Toyota Prius. Hills or short drives you will still get 40 plus mpg. I owned two of them and they were outstanding. Quiet,dependable,great ride and mpg that can't be beat. You would be a happy mpg camper.
Then her office moved to only 3 miles from home. The MPG dropped to 36 MPG driving the 3 mile, one way, commute. Toyota/Lexus hybrids take a while to warm up before being able to maximize MPG.
Just today I was watching the Bar Graph on our 450h. At steady 45 MPH the graph was showing only about 20-22 MPG. After about 3 miles it jumped instantly to 35-40 MPG. it looked like the traction battery charge came up to full and engine and cat came up to operating temp.
Last edited by FLYCT; Oct 7, 2015 at 06:56 PM.
Rookie
Joined: Aug 2013
Posts: 92
Likes: 1
From: Ny
My wife drove her Prius to work, 12 miles each way in local traffic. Top speed of 45 mpg with multiple red lights. She averaged 51 mpg over the 3 years driving that commute.
Then her office moved to only 3 miles from home. The MPG dropped to 36 MPG driving the 3 mile, one way, commute. Toyota/Lexus hybrids take a while to warm up before being able to maximize MPG.
Just today I was watching the Bar Graph on our 450h. At steady 45 MPH graph was showing only about 20-22 MPH. After about 3 miles it jumped instantly to 35-40 MPG. it looked like the traction battery charge came up to full and engine and cat came up to operating temp.
Then her office moved to only 3 miles from home. The MPG dropped to 36 MPG driving the 3 mile, one way, commute. Toyota/Lexus hybrids take a while to warm up before being able to maximize MPG.
Just today I was watching the Bar Graph on our 450h. At steady 45 MPH graph was showing only about 20-22 MPH. After about 3 miles it jumped instantly to 35-40 MPG. it looked like the traction battery charge came up to full and engine and cat came up to operating temp.
10th Gear
Joined: Jan 2012
Posts: 14
Likes: 2
From: TX
I drive a V6 Highlander right now, my commute is 40 highway miles per day round-trip. Getting 22-23 mpg. This is in Houston so winter is really just fall and it's summer 8 months of the year. I also have a CT200h that gets 48-50 mpg on the same drive.
Thinking of replacing the Highlander with the 450h. I know the 2016 mpg is rated at 31/30/30 but wondering how accurate would that be for me in real life?
Thinking of replacing the Highlander with the 450h. I know the 2016 mpg is rated at 31/30/30 but wondering how accurate would that be for me in real life?
Last edited by soupcxan; Oct 12, 2015 at 04:16 AM.
10th Gear
Joined: Sep 2015
Posts: 13
Likes: 0
From: NY
I just bought a 2013 RX450h, with 15k miles. So far, I'm very disappointed to be getting only around 24 mpg. I've read much of this thread for ideas. I don't know who did the last oil change but I'll make sure the right oil is used next time. The tires are worn to about 5mm of tread but I can't see that affecting things much. Any other ideas as to what could be causing the low mileage ? Selling dealer (it wasn't a Lexus dealer) may have filled it with 89 octane gas. How much might that affect things ?
Thanks. BTW, I'm a newbie to this forum so sorry if I missed some protocol
Thanks. BTW, I'm a newbie to this forum so sorry if I missed some protocol
Rookie
Joined: Aug 2013
Posts: 92
Likes: 1
From: Ny
I drive a V6 Highlander right now, my commute is 40 highway miles per day round-trip. Getting 22-23 mpg. This is in Houston so winter is really just fall and it's summer 8 months of the year. I also have a CT200h that gets 50 mpg on the same drive.
Thinking of replacing the Highlander with the 450h. I know the 2016 mpg is rated at 31/30/30 but wondering how accurate would that be for me in real life?
Thinking of replacing the Highlander with the 450h. I know the 2016 mpg is rated at 31/30/30 but wondering how accurate would that be for me in real life?
Your mpg.
Moderator
Joined: May 2012
Posts: 1,263
Likes: 15
From: Florida
I drive a V6 Highlander right now, my commute is 40 highway miles per day round-trip. Getting 22-23 mpg. This is in Houston so winter is really just fall and it's summer 8 months of the year. I also have a CT200h that gets 50 mpg on the same drive.
Thinking of replacing the Highlander with the 450h. I know the 2016 mpg is rated at 31/30/30 but wondering how accurate would that be for me in real life?
Thinking of replacing the Highlander with the 450h. I know the 2016 mpg is rated at 31/30/30 but wondering how accurate would that be for me in real life?
With our CT our worst tank was 38 MPG and best tank was 42 MPG.
With our RX450h our first three tanks so far averaged 27.6 MPG. Current tank is showing 29.9 MPG on dash computer with only 40 miles to empty. I expect average to be near 28 MPG when I fill up tomorrow.
Here is a link to 50 RX450h logs. http://www.fuelly.com/car/lexus/rx450h
Last edited by FLYCT; Oct 5, 2015 at 07:44 PM.
10th Gear
Joined: Jan 2012
Posts: 14
Likes: 2
From: TX
Interesting stats. Seems kind of risky, I would be disappointed if I ended up getting 26-27 mpg, would rather have just bought the gas model. Needs to be 29-30 for me to justify the premium to myself, but no way to know in advance, of course.
Moderator
Joined: May 2012
Posts: 1,263
Likes: 15
From: Florida
RX350 seems to average around 21 MPG
RX450h seems to average around 27 MPG
Using these numbers the "h" has a 28% MPG advantage.
Where the RX450h beats the pants off the RX350 for fuel efficiency is in city or rural driving where it benefits from regenerative braking.
Driver School Candidate
Joined: Feb 2015
Posts: 33
Likes: 0
From: Sunny Glossop
My mpg (UK) figure over the last few months. Calculated by fuel used. Latest one is top.
29.18
27.71
35.32 (longer than usual journey)
27.41
25.56
26.06
25.72
32.73 (longer than usual journey)
29.92
25.43
24.91
23.00
Bottom is colder weather so mpg has increased as it has been warmer - and with longer runs.
I reckon that 35.32 is the closest I'll get to the Lexus official mpg of 44. Not too often though!
29.18
27.71
35.32 (longer than usual journey)
27.41
25.56
26.06
25.72
32.73 (longer than usual journey)
29.92
25.43
24.91
23.00
Bottom is colder weather so mpg has increased as it has been warmer - and with longer runs.
I reckon that 35.32 is the closest I'll get to the Lexus official mpg of 44. Not too often though!
Driver
Joined: Nov 2014
Posts: 75
Likes: 6
From: Illinois
28.3 is about right for a break in MPG. That is what my 2015 RX450h was getting when new. At 15,000 miles I am averaging 29.7 year round average with summer average being 32.5. Winter average will be lower but the trick to keeping it from being to much lower is to be belted in and ready to drive when you start the engine. Don't sit still while the engine is running any more than required by traffic lights. While the engine is warming up you might as well be adding miles to take advantage of that fuel you are burning.