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Old 11-29-2023, 11:25 PM   #51 (permalink)
redpoint5
Human Environmentalist
 
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Join Date: Aug 2010
Location: Oregon
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Acura TSX - '06 Acura TSX
90 day: 24.19 mpg (US)

Lafawnda - CBR600 - '01 Honda CBR600 F4i
90 day: 47.32 mpg (US)

Big Yeller - Dodge/Cummins - '98 Dodge Ram 2500 base
90 day: 21.82 mpg (US)

Chevy ZR-2 - '03 Chevrolet S10 ZR2
90 day: 17.14 mpg (US)

Model Y - '24 Tesla Y LR AWD

Pacifica Hybrid - '21 Chrysler Pacifica Hybrid
90 day: 85.85 mpg (US)
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Quote:
Originally Posted by Appletank View Post
I'm pretty sure the car is doing that to prevent the battery from maxing out, via wasting energy by spinning the engine with electricity and warming air a bit. You shouldn't be using any fuel in those cases.
It uses fuel and runs the engine at least until reaching a coolant temperature of 130. The car could simply require more brake effort to mechanically waste speed into heat, but instead the car starts up for no reason that has been adequately explained to me.

Engine also comes on above 61 MPH. The trick to bypass that action is to shift to N. It's meant to come on above a certain speed to keep the motors within safe RPM limits, but they built a massively conservative margin in. I've coasted at 75 MPH down a hill without issue.

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