HCH III Hypermiling MPG vs Insight II. 60 vs. 73 MPG

[InsightFTW10]

Since the weather has been warming up, I decided to pair up my 2012 Honda Civic Hybrid III vs. my mom's 2010 Insight II on the same set of roads.

I did both today when the temperature was 85 degrees here in Cleveland, OH.

In a 8 mile loop on a 3/4 full battery in mom's insight, I managed to get 59.6 MPG. This loop included lots of stop and go traffic and slight downhill inclines.

The same 8 mile loop in my Civic got an amazing number: 72.4 MPG!!! My Civic's battery was on about the same amount of full battery.

The Civic only has 750 miles while the Insight has 46K miles on it. I can't imagine the Civic's mileage when it hits about 5-6K miles.

The Civic slipped into EV mode A LOT in this loop, something the Insight doesn't have.

I wish I would figure how to add pictures on this site but I don't log on as often as I like..

Thought id like to add that. both these cars just sip fuel!

[Cobb]

Interesting. I wonder how much of that is from the lifepo4 battery vs programming, aero, drivetrain, etc?

What I do is post a video to you tube, then post a link here.


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[firsthonda]

I'm betting if you installed a PHEV kit in your HCH, you'd get triple digits.

[Uriel]

Originally Posted by InsightFTW10

The Civic slipped into EV mode A LOT in this loop, something the Insight doesn't have.

Erm... My Insight has EV mode. It kicks in most in the 20-40mph range (ish) but can occur up to around 60mph on a downhill. It can be induced by taking the foot off the gas and then gently reapplying pressure. On the flat or with a slight downhill it can be sustained for a significant distance.

I was keeping an eye the battery status on the MID this morning's commute and I even had EV mode on a roughly 150 metre uphill stretch under gentle deceleration.

Might be worth getting the 12v and IMA batteries checked on that Insight.

[InsightFTW10]

Originally Posted by Uriel

Erm... My Insight has EV mode. It kicks in most in the 20-40mph range (ish) but can occur up to around 60mph on a downhill. It can be induced by taking the foot off the gas and then gently reapplying pressure. On the flat or with a slight downhill it can be sustained for a significant distance.

I was keeping an eye the battery status on the MID this morning's commute and I even had EV mode on a roughly 150 metre uphill stretch under gentle deceleration.

Might be worth getting the 12v and IMA batteries checked on that Insight.

The Insight cannot have EV mode under acceleration and only has EV if your cruising flat at low speeds or downhill/coasting.

The Honda Civic Hybrid can have pure EV mode whether accelerating or cruising anywhere from 10-43 MPH and the battery in the HCH is larger.

Only downside in the civic is the puny trunk and non-foldable seats but thats not a concern of mine.

Average mileage has been 49 MPG for the first 680ish miles on the car. That included A LOT of driving in temperatures below 50 degrees and driving only 3 miles at a time

[firsthonda]

Honda needs to make a hatchback version of the Civic.

[Trust2400]

Why does the fill on the battery matter?

[Cobb]

From what I can tell it looks like 83mpg is as good as a phev kit will give you on the insight using cruse control at 55mph top speed. Enginer advertises a 15mpg boost or 65mpg under average driving conditions.

It depends on how he drives the civic on what a phev kit will give him. If he can abuse ev mode like with the insight then he could see 80, 90 even 100mpg. I just broke 100 on a stretch of road on my way to work and 81 on my way home.

Wonder what the door sticker says the battery voltage is?


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[biggdave92]

You said the "test run" included a lot of stop and go traffic. Did you encounter an identical amount of stop and go with both test? Also, what tire pressure were you running in both cars?

I have just under 3k miles on my 12' insight ex and my average, on fuelly.com, is 50mpg. I have been getting gas from the same gas station since day 1. After the pump stops, i pump it until it stops 3 more times.

My current tank of gas is the first tank from a different gas station and i am currently reading 57.5mpg on the display in the car. I changed it up to see if i could get better MPG's. BTW, i am almost half way through this tank and right at 270 miles.

44psi in all 4.

[InsightFTW10]

Originally Posted by biggdave92

You said the "test run" included a lot of stop and go traffic. Did you encounter an identical amount of stop and go with both test? Also, what tire pressure were you running in both cars?

I have just under 3k miles on my 12' insight ex and my average, on fuelly.com, is 50mpg. I have been getting gas from the same gas station since day 1. After the pump stops, i pump it until it stops 3 more times.

My current tank of gas is the first tank from a different gas station and i am currently reading 57.5mpg on the display in the car. I changed it up to see if i could get better MPG's. BTW, i am almost half way through this tank and right at 270 miles.

44psi in all 4.

Good question on the stop and go traffic... They were very similar traffic but I think the civic had maybe a little more stop's... not too sure

PSI on the Insight was 36 PSI at all tires and the Civic was at 39 PSI.

Well the HCH isn't broken in yet so wait till 5,000 miles I expect the MPG to keep climbing from there on