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New Hyundai Ionic 5 EV to pull off impressive range

sockmeister

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Where Tesla get range bang-for-the-buck is in aero drag coefficient. They didn't go for good looking, they went for the aero crown. A Mach-E just pushes a lot more air out of the way than a Model Y, and at highway speeds, that's a big deal. That's where the "efficiency" war is won.

It's also why if you just drive the Mach-E and Model Y around at "city" speeds, the range will be surprising similar. The Mach-E larger battery may be enough to actually tip the scales its way, despite the aero (and battery weight) handicap.

Fun BEV wars ahead...

Interesting, but I don't think that's entirely accurate -- yes, the Tesla models have a measured lower drag coefficient. But, the Mach-E and the Tesla Model Y both undergo EPA range tests on a dynamometer, where there is no aerodynamic drag.

I think the difference there isn't enough to account for the range differences. I think Tesla simply has more years of experience in engineering a more efficient powertrain (through software!) -- something that Ford, through OTA updates, and subsequent model designs, will slowly but surely gain on.
 

RonTCat

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But, the Mach-E and the Tesla Model Y both undergo EPA range tests on a dynamometer, where there is no aerodynamic drag.
Nope, the dyno simulates aero drag. That's one of its only jobs, with the other being to simulate vehicle weight (inertia).
 

sockmeister

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Nope, the dyno simulates aero drag. That's one of its only jobs, with the other being to simulate vehicle weight (inertia).
Ah, thank you, I did not know that. So I assume the manufacturer provides drag coefficients and then they just adjust the dyno loads to simulate it?
If this is accurate, then the Mustang Mach-E has about 24% higher drag, which translates to some proportional range decrease compared to the Y. (.23 vs .285).
Still, this doesn't tell the whole story.

The Mach-E has a larger battery pack, too, even though its range is about 20% less than the model Y(AWD to AWD). The Mach-E's battery pack is about 15% larger, which you'd think would almost balance out the range difference due to aero drag. But it does not.

Also, even the city eMPG ratings are much different - 131eMPG for the model Y, and it's 96 for the Mustang. There is something fundamentally different efficiency-wise between the two cars.

Pic for reference:
1610587203398.png
 

DBC

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Where Tesla get range bang-for-the-buck is in aero drag coefficient. They didn't go for good looking, they went for the aero crown. A Mach-E just pushes a lot more air out of the way than a Model Y, and at highway speeds, that's a big deal. That's where the "efficiency" war is won.
Many things go into efficiency. One trick Tesla has implemented is using its smaller motor to supply traction at constant higher speeds, kind of like turning off some cylinders on an ICE vehicle. Porsche has come up with something other than a single reduction gear transmission, an innovation which has a huge impact in real world driving. We'll likely see more innovations like these with time.
 

GoGoGadgetMachE

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something other than a single reduction gear transmission
pretty soon we'll have five or six reduction levels - and then enthusiasts will insist engaging and disengaging the gears by hand is the only way to do it.

we'll have to call it something like "a manual".
 



 









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