Cars - For Car Enthusiasts

3969 readers

32 users here now

About Community

c/Cars is the largest automotive enthusiast community on Lemmy and the fediverse. We're your central hub for vehicle-related discussion, industry news, reviews, projects, DIY guides, advice, stories, and more.

Rules

Stay respectful to the community, hold civil discussions, even when others hold opinions that may differ from yours.

This is not an NSFW community, and any such content will not be tolerated.

Policy, not politics! Policy discussions revolve around the concept; political discussions revolve around the individual, party, association, etc. We only allow POLICY discussions and political discussions should go to c/politics.

Must be related to cars, anything that does not have connection to cars will be considered spam/irrelevant and is subject to removal.

founded 2 years ago

MODERATORS

BallShapedMan

RightHandOfIkaros

Efficiency test of my 2024 Prius Prime: Gasoline vs Electricity in my first week. (self.cars)

submitted 3 days ago* (last edited 3 days ago) by dragontamer to c/cars

26 comments fedilink hide all child comments

The Prius Prime is a dual fuel vehicle, able to run 100% on Electric, or 100% on gasoline, or a computerized blend in-between. This presents me a great opportunity to be able to do a direct comparison with the same car of an EV engine vs an ICE engine.

Toyota computer claims 3.2mi-per-kwhr.
Kill-a-watt (https://en.wikipedia.org/wiki/Kill_A_Watt) claims 2.2mi-per-kwhr.
Additional 1.5% losses should be assumed in the wires if you wish. (120V drops down to 118V during charging, meaning 2V of the energy was lost due to the resistance of my home's wires).
Level 1 charger at home (known to be less efficient).
Toyota computer claims 53miles-per-gallon (American Gallon).
I have not independently verified the gallon usage of my car.
295 miles driven total, sometimes EV, sometimes Gasoline, sometimes both.
30F to 40F (-1C to 4.5C) in my area this past week.
Winter-blend fuel.
12.5miles per $electricity-dollar (17.1c / kw-hr home charging costs)
17.1 miles per $gasoline-dollar ($3.10 per gallon last fillup).

If anyone has questions about my tests. The main takeaway is that L1 charging is so low in efficiency that gasoline in my area is cheaper than electricity. Obviously the price of gasoline and electricity varies significantly area-to-area, so feel free to use my numbers to calculate / simulate the costs in your area.

There is also substantial losses of efficiency due to cold weather, that is well acknowledged by the EV community. The Prius Prime (and most other EVs) will turn on a heater to keep the battery conditioned in the winter, spending precious electricity on battery-conditioning rather than miles. Gasoline engines do not have this problem and remain as efficient in the winter.

you are viewing a single comment's thread
view the rest of the comments

[–] halcyoncmdr 5 points 3 days ago* (last edited 3 days ago) (1 children)

This will vary fairly widely based on electricity pricing in your area, and ambient temperatures. Batteries are less efficient in cold weather, and have to maintain minimum temperatures.

Here in AZ for instance, we pay about 13 cents, and temperatures are usually warmer than in OP's use case. If you're in an area that tends to have higher gas prices or prices that swing up and down a lot that will also have a fairly large effect on the comparison for you.

Pricing should be more stable than gas overall though either way since electricity pricing is usually pretty stable for the consumer, outside of Texas that is.

[–] dragontamer 1 points 3 days ago

The /c/technology discussion also brought up many examples of nighttime charge / time of use electric plans.

Depending on your country or other locations, you might have substantial savings for night time off peak savings.

I can drop from 17.1c to 12c night time / off-peak charging for example. But my on peak / daytime charge skyrockets to 28c.