whats your mpg on RX450h?
#976
Racer
There has of course been a lot of discussions about driving techniques for hybrids, all of them usually have merit in some way. Some are more complicated than others (pulse and glide, running as long as possible on electric only,etc). But IMO, it really comes down to the brake pedal. The brake pedal is a device designed to get rid of energy. The more you use it, the more energy you use/lose/waste. Even with regenerative braking, there is still loss and waste. For driving technique, pretend your brake pedal is made from paper mache and will break off unless you only use it very lightly. It's a challenge in traffic to drive let this, but unless you are towing inflated space capsule parachutes, you can't help but get more efficiency.
#977
Racer
Finally managed to get around to getting my winter tires off, only a couple months late but fortunately hasn't been particularly warm yet. But I noticed an immediate improvement in mpg. Has been getting around 26-27mpg last month or two and instantly started to get 29-30mpg. Even though just passed 100,000 miles it can still deliver decent numbers. I have fair opportunity to drive along at around 35-40mph, which I consider the sweet spot for getting the best numbers over a full tank. But I'm reminded again the difficulty of trying to get a full tank's worth of really good numbers. The problem is, when you have good numbers going, that tank of gas lasts that much longer, increasing the chance you'll get in a poor numbers situation which wrecks the chances of finishing a tank worthy of a high 5.
#978
Lead Lap
That's why I reset the mileage (MPG) once per month.
After logging every ounce of fuel for the first 50K miles - and concluding that the onboard computer is incredibly accurate at calculating MPG - I stopped recording tankfulls. The cumulative MPG was 27.4. I'm now at 65K
A recent example of my "...poor numbers situation..." was returning from Florida with a loaded car (bike rack and roof rack) which netted me about 23.4 MPG for the month (2,300 miles).
Now that we're on Summer Blended Fuel, this month's outlook is much brighter.
I can only imagine what I'd have gotten were I to have been driving an RX-350.
After logging every ounce of fuel for the first 50K miles - and concluding that the onboard computer is incredibly accurate at calculating MPG - I stopped recording tankfulls. The cumulative MPG was 27.4. I'm now at 65K
A recent example of my "...poor numbers situation..." was returning from Florida with a loaded car (bike rack and roof rack) which netted me about 23.4 MPG for the month (2,300 miles).
Now that we're on Summer Blended Fuel, this month's outlook is much brighter.
I can only imagine what I'd have gotten were I to have been driving an RX-350.
#979
Rght on
That's why I reset the mileage (MPG) once per month.
After logging every ounce of fuel for the first 50K miles - and concluding that the onboard computer is incredibly accurate at calculating MPG - I stopped recording tankfulls. The cumulative MPG was 27.4. I'm now at 65K
A recent example of my "...poor numbers situation..." was returning from Florida with a loaded car (bike rack and roof rack) which netted me about 23.4 MPG for the month (2,300 miles).
Now that we're on Summer Blended Fuel, this month's outlook is much brighter.
I can only imagine what I'd have gotten were I to have been driving an RX-350.
After logging every ounce of fuel for the first 50K miles - and concluding that the onboard computer is incredibly accurate at calculating MPG - I stopped recording tankfulls. The cumulative MPG was 27.4. I'm now at 65K
A recent example of my "...poor numbers situation..." was returning from Florida with a loaded car (bike rack and roof rack) which netted me about 23.4 MPG for the month (2,300 miles).
Now that we're on Summer Blended Fuel, this month's outlook is much brighter.
I can only imagine what I'd have gotten were I to have been driving an RX-350.
#980
No, I don't play soccer!
snowman22, premium, specifically 91 octane minimum, is required for the 450h. It's been that way since the RXh came out in 2010. 2010-11 RX350s also required premium but that was dropped with 2012 MY. It's outlined in this chart. I'm not trying to create another 'what gas to use' threads. We have those already. I just want to point out the requirements per Lexus. It's your choice.
BTW, my 'butt ugly' 450h is getting a few more MPGs than the old one. Same drive, same driving style. It also spends far more time in EV mode. And speaking of modes, eco is like power mode on the old 450h. Don't miss that heavy gas pedal a bit
BTW, my 'butt ugly' 450h is getting a few more MPGs than the old one. Same drive, same driving style. It also spends far more time in EV mode. And speaking of modes, eco is like power mode on the old 450h. Don't miss that heavy gas pedal a bit
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Kopavi (06-07-17)
#981
Instructor
The engine of the Lexus 450h works on the Atkinson Cycle and not the Auto Cycle. The 13 to 1 compression is the max compression achievable. The compression is variable and controlled by the computer based on fuel grade, air density and air temperature. That is why the engine works equally well at 5000 feet as it does at sea level and works with fuel grades from 87 to 130 non leaded avgas. Unless you are drag racing your RX 450h, you will not notice the difference in performance only in your wallet. At 700 ft, I get an average of 33.3 mpg of Summer blend 87 octane around town and 30+ on the interstate. Winter drops to 28 and 29 due to engine heat up running the engine when the power is not needed.. What is important is using Top Tear brands since they do not foul the valves.
http://blog.caranddriver.com/what-is...-its-benefits/
#982
Instructor
How does your 'butt ugly' 450h getting few more MPGs and spending more time in EV mode than the previous generation? is the battery larger?
#983
No, I don't play soccer!
Let me not derail the thread by adding the overall average MPG on my '10 was around 26 with my short, hilly commute. That was something I was more than happy with coming from a non-hybrid RX. Plus it's a pretty awesome vehicle.
#984
Racer
With each gen, I think Toyota gets a bit more comfortable relying on the battery incrementally more without reliability concerns. Loads of capacity has always existed, fear of reliability issues has kept the usage conservative.
Last edited by Droid13; 06-07-17 at 06:15 PM.
#985
Driver School Candidate
Join Date: Aug 2017
Location: FLORIDA
Posts: 4
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Disappointing gas mileage for 2015 RX 450h
I just bought a USED (lease certified) 2015 RX 450h & disappointed that I'm only getting 24.5 MPG using regular gas at strictly city driving. The original sticker says 29 mpg for combine city/hwy, 30 city & 28 hwy. I accessed fueleconomy.gov & found out that their survey shows 25.1 mpg using premium gasoline. I don't wish to switch to premium gas.
#986
Moderator
I just bought a USED (lease certified) 2015 RX 450h & disappointed that I'm only getting 24.5 MPG using regular gas at strictly city driving. The original sticker says 29 mpg for combine city/hwy, 30 city & 28 hwy. I accessed fueleconomy.gov & found out that their survey shows 25.1 mpg using premium gasoline. I don't wish to switch to premium gas.
You can also switch to ECO mode [takes the fun out of driving]. This will throttle back some of the fast acceleration,
Salim
#987
Racer
I just bought a USED (lease certified) 2015 RX 450h & disappointed that I'm only getting 24.5 MPG using regular gas at strictly city driving. The original sticker says 29 mpg for combine city/hwy, 30 city & 28 hwy. I accessed fueleconomy.gov & found out that their survey shows 25.1 mpg using premium gasoline. I don't wish to switch to premium gas.
RE: your city numbers. Keep in mind city driving means different things to different people. Extended cruising along at 35 to 40mph can yield absolutely excellent results. Heavy stop and go driving with make numbers suck, but they will be 10X better than the non-hybrid suckers trapped in the same traffic as you.
#989
Moderator
Salim
#990
Instructor
I just bought a USED (lease certified) 2015 RX 450h & disappointed that I'm only getting 24.5 MPG using regular gas at strictly city driving. The original sticker says 29 mpg for combine city/hwy, 30 city & 28 hwy. I accessed fueleconomy.gov & found out that their survey shows 25.1 mpg using premium gasoline. I don't wish to switch to premium gas.
when Mrs. MellonC drives it, she gets only 23 mpg. Go figure. Car and Driver got the same 23 mpg in their aggressive driving while testing the car also. I guess she floors it.