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Old 04-05-2023, 10:25 AM   #221 (permalink)
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Originally Posted by Phase View Post
Some Japanese numbers got released for real world driving on it.

2023 Toyota Prius w/ the 2.0L I4

Combined Mode: 28.6 km/L
City Mode: 26.0 km/L
Suburban Mode: 31.1 km/L
Highway Mode: 28.2 km/L

2023 Toyota Prius w/ the 1.8L I4 <-- Not offered here. Yet.

Combined Mode: 32.6 km/L - 13.9% higher than the 2.0L
City Mode: 29.9 km/L - 15% higher than the 2.0L
Suburban Mode: 37.3 km/L - 20.0% higher than the 2.0L
Highway Mode: 31.2 km/L - 10.6% higher than the 2.0L

That’s about 73 miles per gallon on the highway with the 1.8L version! Insane
Japan also overestimates the fuel economy of most cars versus the EPA test since speeds are usually lower in Japan than the US.

The combined 28.6 km/l for the 2.0L is about 67 mpg US. I would be surprised if the real world numbers in the US were higher than around 54 mpg. 32.6 for the 1.8L / 28.6 for the 2.0L with 54 mpg US shows that the 1.8L gets about 13% better fuel economy than the 2.0L. If the 2.0L has 54 MPG real world average in the US, that's still 61 mpg for the 1.8L which is pretty impressive. We'll have to keep an eye out on Fuelly to see what the actual real world numbers are though.

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Old 04-05-2023, 12:13 PM   #222 (permalink)
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Originally Posted by mpg_numbers_guy View Post
Japan also overestimates the fuel economy of most cars versus the EPA test since speeds are usually lower in Japan than the US.

The combined 28.6 km/l for the 2.0L is about 67 mpg US. I would be surprised if the real world numbers in the US were higher than around 54 mpg. 32.6 for the 1.8L / 28.6 for the 2.0L with 54 mpg US shows that the 1.8L gets about 13% better fuel economy than the 2.0L. If the 2.0L has 54 MPG real world average in the US, that's still 61 mpg for the 1.8L which is pretty impressive. We'll have to keep an eye out on Fuelly to see what the actual real world numbers are though.
Real world numbers with Toyota hybrids are usually higher than epa also. My ex had a Corolla hybrid and it was rated at like 51 city or something and she easily got low 60s average when driving around town. Also got much higher highway than what the epa also said. Meanwhile with Hyundai hybrids, you have to hypermile and have perfect conditions to even get close to the epa.

Hopefully the guy at CLEANMPG forums can do a steady state highway test with the new Prius. Thatís what Iím mostly interested in

Also Toyota said that even though the drag coefficient of the new Prius is slightly higher than the last model, the TOTAL drag is actually the exact same due to reduced frontal area.
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Old 04-05-2023, 01:15 PM   #223 (permalink)
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Beating Toyota hybrid ratings hasn't been my experience. My Gen III got 50 MPG regardless if I drove it or my wife. Might have been the non-factory tires, or something was messed up in the crash that didn't deploy the airbag, although alignment checked out.

Look at the other cars in my garage though. I massively beat the EPA figures on those non-hybrids.
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Old 04-05-2023, 02:03 PM   #224 (permalink)
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Quote:
Originally Posted by Phase View Post
Real world numbers with Toyota hybrids are usually higher than epa also. My ex had a Corolla hybrid and it was rated at like 51 city or something and she easily got low 60s average when driving around town. Also got much higher highway than what the epa also said. Meanwhile with Hyundai hybrids, you have to hypermile and have perfect conditions to even get close to the epa.
Oh it's totally possible if you drive well enough. My Prius C is rated at 53 city 46 highway yet I regularly got 60 city 55 highway this winter, and 70 city 60 highway now that it's warmed up. And that's with the higher cD of 0.28 that the C has versus the standard Prius. I have no doubt that I or another efficient driver would see the Japanese numbers in regular driving in the US, it's just that the average driver likely won't. Fuelly reports the average Prius C driver gets 47.6 mpg, which is about 25% lower than what I average.
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Old 04-05-2023, 04:11 PM   #225 (permalink)
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I wish I could get better fuel mileage in my Toyota Avalon hybrid. The dash indicator says I average only 35mpg. On the other hand, I do a lot of short trips, which I believe is my fuel mileage killer.
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Old 04-05-2023, 04:17 PM   #226 (permalink)
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I wish I could get better fuel mileage in my Toyota Avalon hybrid. The dash indicator says I average only 35mpg. On the other hand, I do a lot of short trips, which I believe is my fuel mileage killer.
Short trips definitely do kill mileage. I don't even break 40 mpg in the C until 1.5 miles in the trip.

I also have my Scangauge programmed with an XGauge to detect use of friction brakes. This way if I have to brake I'm only using regen, which helps around town a lot. Eco mode on always, cruise control always with neutral coasting down hills if the engine is off, and accelerate with the throttle just before it hits the red PWR/POWER range.
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Old 04-05-2023, 04:29 PM   #227 (permalink)
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Ya, that's my problem. It's one mile to work and even in the summer my engine might only reach 100į F by the time I reach work, or home, or the store, etc.

Now that it's getting warmer I'm trying to walk to work more. But it still keeps snowing, like this morning we had an inch of snow. And it's also very muddy right now where there isn't any snow.

I also need to figure out my block heater situation. I already replaced the GFCI outlet, but now it seems to keep popping all the time. Maybe it's the cord being on wet ground and partially frozen in ice. But since I also have a freezer in the shed connected to that outlet I'm now affraid to use it to plug my block heater in, especially since we're getting abover freezing temperatures now.
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Old 04-05-2023, 04:48 PM   #228 (permalink)
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Ya, that's my problem. It's one mile to work and even in the summer my engine might only reach 100į F by the time I reach work, or home, or the store, etc.
Think of it in terms of cost per day. 1 mile at 35 mpg uses less fuel than 2 miles at 45 mpg. My work commute is 10 miles each way. Even though I've averaged 70 mpg each way this week I still use 5 times more fuel commuting than you are.
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Old 04-05-2023, 04:53 PM   #229 (permalink)
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Think of it in terms of cost per day. 1 mile at 35 mpg uses less fuel than 2 miles at 45 mpg. My work commute is 10 miles each way. Even though I've averaged 70 mpg each way this week I still use 5 times more fuel commuting than you are.
I do several jobs that are just a mile or so away. I drive more than 15,000 miles per year and am getting 35mpg average on all those miles. I'm spending close to half of my total vehicle monthly costs on just fuel.
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Old 04-06-2023, 02:30 AM   #230 (permalink)
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Look at the other cars in my garage though. I massively beat the EPA figures on those non-hybrids.
Ain't it often said a hybrid "compensates" the lack of "eco" driving skills?

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