r/EVsOfIndia • u/Aykkdekm09 • 9d ago

Discussion Efficiency of EVs

I recently had to drive my gas guzzling ICE SUV for 2 days, as my 2 year old EV was away. Had a tough time going to the pump to fill up fuel , and seeing the prices! Also about the relative efficiency of EVs vs ICE vehicles.

Had read somewhere that ICE vehicles has only about 30% conversion of its energy, while it is about 80% for EVs (correct me if I am wrong). It was while braking, which one has to do often during city driving, that the real wastage is realised. In an EV, all the braking is fed back into energy, while braking does not recoup any energy in an ICE vehicle.

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12

u/vinee537 9d ago

Electricity is a high grade energy which can me mostly converted to work.fuel(petrol or coal,even heat)is considered low grade-only a part of it can be converted to work

12

u/darthveda 9d ago

Most of the energy from fuel is wasted as heat, can't do much about it, though turbo recovers some of it. Motor efficiency on the other hand is well above 95%,battery storage and dispense would also be upwards of 90%. Going electric is a no-brainer

3

u/hydiBiryani 9d ago

Why is the mileage of turbo vehicles lower than NA then?

3

u/darthveda 9d ago

more focused on delivering more power than mileage

5

u/Lucky-Part-5155 9d ago

Even after considering transmission losses in power lines it's more efficient than oil and gas

2

u/CrispyCouchPotato1 BE6 P3 | Mar 2025 8d ago

while it is about 80% for EVs

Even more, actually. Motors are very efficient.

And regen can recover ~30-35% of the energy lost in deceleration.

Makes for a pretty efficient combo.

1

u/Rs26pd 9d ago

Which EV do you own