When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Hybrid TechnologyUnique topics related to the 2023 up RX model hybrid drivetrain and other features/options found only on the hybrid models. Please use the main forum for discussion about shared components with other fifth generation RX models.
We are also very impressed with the fuel economy of the RX450h+. The overall gasoline fuel economy is roughly 50% better than that of our 2013 RX350 AWD, while basically doubling the city fuel economy of the earlier RX. Highway fuel economy isn't quite as impressive of a leap, but the worst highway fuel economy we've seen with the RX450h+ is roughly equal to the best fuel economy we ever saw from the 2013. The average highway fuel economy is still probably about 30% better, overall.
EV mode does reduce the amount we fill up, but is not really a money-saver in our case. EV mode is still pretty sweet though.
I purchased the 2024 RX 450h+ and am nothing but thrilled with my gas mileage. As a scientist, I understand the need for accuracy and precision when calculating mileage; however, I’m just going to say this…
I am in love with this cars’ comfort, class, luxury and sound, but most importantly, top it off with outstanding fuel economy… I’ll never go back!
It'd have been really nice to be able to measure the gas vs. EV mileages per trip and log those in the app after every trip - if only under the "Drive Pulse and Trips" section that anyway logs the miles per trip. I do hope they update the app and make many such features functional... over time, at least.
By the way, your mention of "scientist" (yup, in the club) reminded me of this savagegeese review of the RX 2023, whereby the apparent targeted customer characteristics are these. Matches the psychographics of quite a few I've met in this forum. I have been a "Conquest".
WellsB and Wrinkle have already said it all so, all I can add is........Yup, me too three. The fuel mileage certainly beats that of my Toyota Sequoia, which is a vehicle that cannot pass a gas station without automatically pulling in for fuel, and I can do nothing to stop it! The truck has a mind of it's own.
I charged during the weekend, and have been driving it only within a community using EV, at low speeds and flat terrain.
Charge went to 86% after 10 miles, as measured by the trip log on the app.
I calculated at that rate I would have to drive 71 miles to deplete the charge
ps. I shoulda looked at the odometer after the charging, instead of using this app. I assume the app is rounding up if you drive short distances below a mile.
If you update the trip information display, it will show you the miles per kwh for your trip and give you a good indication of how far you can get. I usually see around 3 miles per kwh in an urban setting.
Yesterday, I was in traffic crawling at 5 mph, and noticed the instantaneous reading at 5 miles per kwh, which was pretty cool. That's when a pure ICE engine would be getting single digit fuel economy. At that rate, I could actually have driven 70 miles on a charge, though it would take over 12 hours, lol.
If you update the trip information display, it will show you the miles per kwh for your trip and give you a good indication of how far you can get. I usually see around 3 miles per kwh in an urban setting..
Looks like I'm at 2.5 miles/kwh, but I have run the car without actually moving* (just fooling around with settings, so that might have influenced things). I may charge it to full again tonight and then keep track of odometer readings.
*I did this in an enclosed garage. I'm assuming I won't die of CO poisoning.
Charged it to 100% again last night and noticed that again, the estimated range of the EV on the app is 32 miles. I assume this will go up over time, or is this some kinda default estimate?
It will slowly change to get closer to your actual average range.
I don't remember what my estimated EV range started out at, but by 2,800 miles, when I started recording it, it was 38 miles. It now, at 8,200 miles, is 44 miles with HVAC off and varies from 40 to 42 miles with it on, depending on ambient temperature. Very cold temperatures also reduce the non HVAC range. The HV estimated range will also change. My HV estimated range started at an absurd 557 miles. It's now a much more realistic 428.
Keep in mind that I only use EV at speeds below 55mph and mostly on city and/or rural roads. I also drive very conservatively to maximize range.
Did my first longer range trip on the RX 450h+ using EV. Shopping trip with the wife. Traveling quite a bit farther than we usually do (our Walmart is close by, but we wanted to go to Sam's this weekend). Eco mode all the way, and driven using techniques I've honed as a Prius driver for 14 years.
Drove total of 40 miles (64 km) - measured via odometer. Top speed almost 55 mph (88 kph), combination of state highway and suburban driving, including stop and go on lights. All EV mode, no HV. Multiple stops (Sam's, Walmart, etc)
Charge left at end was 49%, with estimated range left of 6+ miles (10 km)
Digital display showed average mileage at 3.2 miles per kwh (5.1 km/kwh)
Calculated total range if I had used up all the charge available (using 14.5 kwh as total available) was a very nice 46.4 miles (74 km).
This shows that for long shopping weekends (not even mentioning typical short grocery trips), driving only on EV is enough to get us around
Btw, I LOVE driving this car! It's a big step above the riding quality of my 2010 Prius...no surprises obviously. And the tech (especially the HUD, the panoramic view, and the safety features) is fantastic.
Decided to continue the break in of the RX450h+ today. Drove to a nearby bookstore, then back again, with stops at Walmart and a couple other stores.
Set to HV mode. Top speed 55 mph (88 kph), mix of state highway and local roads and parking lot.
The initial drive to the bookstore was approximately 20 miles (32 km).
The fuel usage by the time I parked in the bookstore was a weirdly high 57.7 mpg (24.5 km/l)!
That's Prius numbers there. I did not have my ODB2 so could not measure SOC, but the EV range dropped down by 6 miles (10 km).
The trip back was with stops to a couple of places like Walmart. Total distance was 24 miles (39 km), and fuel usage from dashboard was 47.3 mpg (20 km/l). EV range dropped by 1 mile (1.6 km).
When I got home I checked the SOC....it was now 79.62%, from an initial 91%. I know the car tries to maintain it at 80% via regen and the motor so that might explain this end value.
It will slowly change to get closer to your actual average range.
I don't remember what my estimated EV range started out at, but by 2,800 miles, when I started recording it, it was 38 miles. It now, at 8,200 miles, is 44 miles with HVAC off and varies from 40 to 42 miles with it on, depending on ambient temperature. Very cold temperatures also reduce the non HVAC range. The HV estimated range will also change. My HV estimated range started at an absurd 557 miles. It's now a much more realistic 428.
Keep in mind that I only use EV at speeds below 55mph and mostly on city and/or rural roads. I also drive very conservatively to maximize range.
EV range falls off quickly at higher speeds.
I can confirm some of the things you mentioned in this thread and others. I'm in FL, temp range well above freezing.
1. Dr. Prius voltage readings of the 12V battery are lower than actual. Whether charging the hybrid battery overnight or driving long distance then taking a reading, the highest I've ever seen was 11.7 V, which is discharged already from what I've read.
The other alternative explanation is that switching to Ignition On mode pulls the V down temporarily, just as going to READY mode pushes it up.
2. The RX keeps the SOC of the traction battery around 80% during HV driving. I've seen both 79.6% and 80.01% after longer drives on HV mode (the latter after being charged to approximately 90% SOC overnight, which is 100% on the dashboard).
3. My fuel usage on HV (all ecomode) seems to be fairly consistent when driving on mixed state highway and local at max of 55 mph (88kph), which is in the 40 and 50 mpg area (17 to 21 km/l), although I do get higher at times. If correct, I feel good about that. All highway probably will push that down. I look forward to testing it.
After a month and a week or two of driving (and around 600+ miles, which included 200+ miles drive from the dealership using HV mode only as the battery was drained), I finally added more (premium) gas to the RX450h+. 3 gallons only.
I noticed that most days we don't actually drive it (we have the Prius so we sometimes take that), and when we do the EV range most times fully covers the trips.
I actually had to forcibly use the HV mode on slightly longer trips that would still have been covered by EV, simply because I want to keep breaking in the gas engine.
Hoping you or someone can tell me how the RX450H+ does power wise when climbing 4000 feet in 60 miles. I would imagine that the battery would be in a low SOC. The engine only puts out 180 HP and it’s pushing or pulling 5000 lbs.
Are you keeping the semis company in the right lane or can you keep up with traffic?
I’m thinking of i5 from Redding CA to Mt Shasta.
Hoping you or someone can tell me how the RX450H+ does power wise when climbing 4000 feet in 60 miles. I would imagine that the battery would be in a low SOC. The engine only puts out 180 HP and it’s pushing or pulling 5000 lbs.
Are you keeping the semis company in the right lane or can you keep up with traffic?
I’m thinking of i5 from Redding CA to Mt Shasta.
Haven't done that in the RX, but I have frequently done highways on very steep mountains in my Prius. It will still be fast for a few miles, then I will need to move to slower lanes. I did this mostly because I could sense the car straining and did not want to tax it hard, so not sure whether it would have been fine still at higher speeds.
The 3rd gen Prius is lighter than the RX by 2k, but the gas engine is only 98 hp by itself. A bit less power at a ratio level.
02-25-24, 08:30 PM
