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Hybrid Vehicles Toyota Highlander Hybrid Toyota Highlander Hybrid MPG-Real World Numbers
417 messages, Last post on Oct 16, 2009 at 11:34 AM
You are in the Toyota Highlander Hybrid Forum. Your Host is pf_flyer
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There are mileages numbers on a 2006 Toyota Highlander Hybrid front wheel drive, as measured by a Scangauge II , calibrated as best I can (enter in actual gas used during fillups). Almost constant driving one person and luggage, from Minneapolis, MN to Oshkosh, WI 30 MPG Summer 27.5 MPG Add a second person and more luggage Going speed limit on major roads Mixed driving (city/highway) 23 to 25 MPG Driving in Minnesotan winters drops to, sometimes slightly higher 25 to 30 MPG Driving in "warmer" months - (closer to 30 MPG if I can "drive for mileage) Driving habits: I monitor the air pressure in the tires; the Scangauge II is in gauge mode most of the time (watch engine RPMs, throttle position, engine load, and timing). Highest even seen - 32 MPG in mixed city/highway To get these numbers, I need to drive, watching ahead for stoplights, slowing down before. Unlike other cars, I gently "ride" the brake, which initially kicks in the re-generative braking. I tend to gradually accelerate, except for unusual traffic conditions. Kicking in the turbo mode of the HH dramatically reduces gas mileage, although useful when merging into heavy highway traffic. Out, Scott |
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| I have had my 2008 highlander hybrid for almost 4 weeks now. (No Nav system or moon roof but has 3rd row seats) First week I got 27mpg city and 26mpg highwy. Next week I got 25/city and 23/highway. Now I am only getting 21-22mpg in the city with warm weather and slow accelerations. Anyone else knows what is going on here? The Toyota mechanic doesn't | |
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Replying to: marshalljay (May 07, 2008 7:38 am) This would be incorrect. The hybrid system on the HH only operates at speeds up to about 40-45 mph. After that it is all ICE. The phenomenon you are describing here applies to ALL vehicles, we are just too impatient to actually GO SLOWER. EVERYONE would see a benefit from doing this. |
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Replying to: tourguide (May 21, 2008 3:47 pm) The above statement is also incorrect  . The ICE can kick in at any time, from 0-mph to blast-off and the batteries can kick in at any time from 0-mph to blast-off. On flat ground, it is possible to go from 0 to 40 MPH on electric-only. If there is enough charge and the ground remains flat, I can maintain 40-MPH for a very long spell. A good stiff tail-wind helps. On downhill runs, the battery can go even further depending on desired speed. On steeper downgrade, even on freeways, the battery can provide all the power to maintain 65-MPH or 70-MPH (on really steep grade) while the ICE just idles. We see this all the time driving I-5 in Northern CA. The car is cruising downhill at 65-MPH and the ICE is madly charging the battery or the battery kicks in to give some power to maintain downhill speed. By the end of a run, the battery is all green (full 8 bars). On a climb, the ICE kicks in and the battery will also kick in to boost power. The battery provides instant torque in such cases and the car just rockets up a grade like it is a V8. The ICE and battery pack work together through all speed ranges. There is NO "cut off" where the ICE takes over completely without the battery pack. At least I have never seen it on our '06 HH. Just want to clarify. |
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Replying to: tourguide (May 21, 2008 3:47 pm) No, I'm afraid YOUR statement would be incorrect. I own the FEH, which is similar in drivetrain design to the HH. The electric motors can provide boost at all speeds; the only imitation is the state of charge in the battery. The design requires that the engine operate above 40 MPH, but this actually means only that the engine has to spin, not that it has to consume fuel. I think that on a downgrade with a full battery of vehicle will use the drag of spinning the ICE to bleed off excess electricity from the generator. At least, this is my understanding. |
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Now 23k on the odo. 33 miles to work 95% highway. Average 28-30 mpg per tank. Some of my short local drives can be as high as 50 mpg. I tried many techniques. Cruise control at 57 mph gives good mpg but slow travel overall. Or I drive like a roller coaster, accelerate on the downhill and let it slow down on its own at the incline. I get the same mpg but the second technique is faster and more fun. Most of the time, I combine them, using cruise control on downhill once the speed is about 75 mph. |
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Replying to: tourguide (May 21, 2008 3:47 pm) Not true. If you watch the display, you will see the electric motors kick in for short periods at higher speeds. I have observed it doing this at up to 70 mph. I have noticed this if you go down a small hill, the ICE will shut down. At the bottom of the hill, the ICE starts up again. As you climb a gentle hill the traction motor(s) will assist the ICE.
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Replying to: monte8 (May 25, 2008 5:25 pm) |
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I have done this many times on my 2006 HH since I drive on hilly terrain. When I am going downhill and set my cruise control, sometimes the synergy drive sorts out and decides to do it in all electric mode even at 75 mph.
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Replying to: peralta (May 26, 2008 6:50 am) Is the ICE still spinning? (check the RPM gauge)
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