EV Range: Everything You Need to Know from Car and Driver

Aptera Community Solar EV Industry News EV Range: Everything You Need to Know from Car and Driver

Aptera Community Solar EV Industry News EV Range: Everything You Need to Know from Car and Driver

  • EV Range: Everything You Need to Know from Car and Driver

  • John Malcom

    Member
    February 15, 2022 at 12:03 am

    Most on the forum know this but it is sobering to see it in print. next year Aptera will blow them away

    https://www.yahoo.com/autos/ev-range-everything-know-132000750.html

  • Joshua Rosen

    Member
    February 15, 2022 at 5:39 am

    The article contains one glaring error, they claim that electric motors get less efficient at high speeds, that’s not true. The reason for the gears in the Porsche is to keep the motors from flying apart. Tesla accomplished this in the Plaid by wrapping the motors with carbon fiber which allows them to spin at 20,000RPM. The reason that Porsche and Audi exceed their EPA ratings is because VW choose to sandbag the EPA numbers, they want to underpromise and overdeliver.

    The other thing that’s wrong in the article is that they stated that speed doesn’t effect ICEV in the same way as EVs. Newton’s laws apply to everyone. However in ICEVs the effects are masked by the massive inefficiencies of the internal combustion engine. Electric motors are highly efficient at all speeds so what you see is pure Newton, in addition the effects of regen braking recaptures a lot of energy when you are doing start and stop city driving. An ICE operates in a very narrow band, go out side of that band and it gets much less efficient which is why they have transmissions which have now reached a ridiculous level of complexity with 8-10 gears instead of the old 3-4. Braking in a ICEV is a pure waste, all of the energy goes to heat which is why they are so bad at start/stop city driving. It’s not that they wouldn’t use less energy if they were doing a steady 30MPH instead of a steady 75MPH, it’s because in the city you are doing 0-30-0 every few blocks. That’s heat out the wheels and an engine that’s not in it’s most efficient domain most of the time. The only place where ICEVs have an advantage over EVs is cabin heat. When 70 cents of every gasoline dollar is turned into heat the marginal cost to heat the car is 0. In an EV you have to pay for the heat and it’s expensive, especially if you are using resistive heating.

    Aside from that I’d take their chart at face value. The Aptera will be the second car, and the first affordable car, that will match or exceed the range of longest range ICEVs and hybrids. The first car to do it is Lucid, the Inside EVs 70 MPH range test got 500 miles. But nobody would describe the Lucid Air as affordable, the Aptera will cost 25% as much as the Air and get at least as much and maybe more range.

    • This reply was modified 4 months, 2 weeks ago by  Joshua Rosen.
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