EV Efficiency Discrepancy

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J0hnnyV3nturaX

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Am I losing range? I've been obsessing over my EV's efficiency and I've noticed something weird. The car's computer says I'm getting 3.2 miles per kWh, but my own calculations based on Google Maps and the app data show only 3. That's a difference! Is this normal? Anyone else seeing this kind of gap?
 
Am I losing range? I've been obsessing over my EV's efficiency and I've noticed something weird. The car's computer says I'm getting 3.2 miles per kWh, but my own calculations based on Google Maps and the app data show only 3. That's a difference! Is this normal? Anyone else seeing this kind of gap?
Yep, I’ve noticed similar differences with my EV. The car's estimate often doesn't account for factors like climate control or elevation. When I calculated manually using app data, it was usually a bit lower too, normal but worth tracking over time.
 
Did you base that from your charger?
I think the kWh reading is coming from the Lexus app, not the charger. The app will show how much energy was added, not how much was used during the charging session.
 
Am I losing range? I've been obsessing over my EV's efficiency and I've noticed something weird. The car's computer says I'm getting 3.2 miles per kWh, but my own calculations based on Google Maps and the app data show only 3. That's a difference! Is this normal? Anyone else seeing this kind of gap?
That gap’s totally normal. Your math includes everything, but the car’s system probably only cares about the energy used for driving.
 
When I was researching my first EV, everyone was obsessed with range. It felt like the biggest deal how far could you go on a single charge? I remember comparing the early Nissan Leaf to the original Tesla, and range was the main selling point. But I soon realized it wasn't that straightforward. Things like how fast I drove, the weather, and even my tires could drastically change how far I could actually go. The advertised range was just a guess, really.

That's when I started paying attention to efficiency instead. It's about how much energy the car uses to travel a certain distance, just like fuel economy in a gas car. This directly impacts how much it costs to run. Think about it a giant battery might let you drive forever, but it also makes the car super heavy. All that extra weight actually makes the car less efficient. And with fast chargers popping up everywhere, I don't need to worry about driving hundreds of miles without stopping.

So now, when people only talk about range, I try to remind them that efficiency is the real key. It's what matters most in my daily driving experience.
 

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