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Old 01-24-2014, 05:22 PM   #11 (permalink)
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I dont think there is an answer. Its like a trick question considering the image above of how the tranny works to get the power from the things that spin to the things made with rubber rings.

THe prius has its unique aero shape, then other modifications to boost mpg such as the coolant recovery system, the atkins cycle engine as mentioned and I am sure a hot of other features that should be tested with the engine and body if you could in theory just flip a switch like in the IMA system of an insight.

Id venture to say with my experience with the 2nd gen Insight around 35mpg.

FYI, the inclusion of a phev kit nets 10-15 mpg without modifying your driving techniques. Driving to take the advantage of both a hybrid and phev kit? You can easily exceed 100 mpg.

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Old 01-24-2014, 08:00 PM   #12 (permalink)
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Quote:
Originally Posted by 123 View Post
Can anyone tell me what kind of mpg the Prius gets with out the hybrid system working? so just using ICE.
You can't do this exactly for the Prius, but the Yaris and slightly bigger Auris both come as hybrid and gasoline (diesel versions too).
The Prius is about the same size as the Auris.
This is from Toyota's UK web site.

YARIS


AURIS


PRIUS


On the European combined driving cycle the hybrid gets 50% better mpg.
For the gas only versions I chose the engine that had the closest hp and transmission with the best mpg. I included the Prius with 15" and 17" wheels to compare with the Auris.

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Last edited by mort; 01-24-2014 at 08:32 PM..
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Old 01-24-2014, 08:59 PM   #13 (permalink)
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There is a gentleman here who works for Toy and put a prius engine with working vvt/atkinsons or miller cycle in a conventional vehicle. I think he posted in the eco mode it was a dog to drove, but got like 40 mpg. In regular mode it got like 30 I want to say.
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Old 01-26-2014, 08:27 PM   #14 (permalink)
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Quote:
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There is a gentleman here who works for Toy and put a prius engine with working vvt/atkinsons or miller cycle in a conventional vehicle. I think he posted in the eco mode it was a dog to drove, but got like 40 mpg. In regular mode it got like 30 I want to say.
Wow thats not very impressive. I am borrowing a friends Ford Torus wagon with 3.0L V6.
I did basic modifications to my driving techniques, never going over speed limit,coasting when possible, no fast acceleration and minimal braking.
On a 29 mile round trip of mixed driving, I got a trip ave. of 36mpg and over 40mpg HWY. according to the android app torque. I have not driven the car enough to verify those numbers.
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Old 01-26-2014, 10:01 PM   #15 (permalink)
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Quote:
Originally Posted by 123 View Post
Wow thats not very impressive. I am borrowing a friends Ford Torus wagon with 3.0L V6.
I did basic modifications to my driving techniques, never going over speed limit,coasting when possible, no fast acceleration and minimal braking.
On a 29 mile round trip of mixed driving, I got a trip ave. of 36mpg and over 40mpg HWY. according to the android app torque. I have not driven the car enough to verify those numbers.
I guess that it really depends on the car into which the Prius engine was installed. Maybe 30-40 is a large improvement.
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Old 01-27-2014, 02:20 AM   #16 (permalink)
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It's difficult to quantify that now. But initially the Prius was based heavily on the Echo.
Compare Side-by-Side
Based on the original EPA scores it looks as if the hybrid Prius boosted combined MPG by ~30%.
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Old 01-27-2014, 05:45 PM   #17 (permalink)
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From what Ive read from real world experience the best mpg comes from using a 3 cylinder geo or honda engine for gas powered and for diesel the 2 or 3 cylinder generator motors.

I use to read a geo form and it seems no matter how many mods you did it was nearly impossible to get the 4 cylinder version of the engine over 50 mpg, where with the 3 cylinder engine it took little to no mods.

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