Range Efficiency Question

[dmh444]

So I've had my Y for almost a month now. LWD on 20" induction wheels. Got 600 miles on it. A couple days ago I downloaded the Tezlab and Stats app. LOVE all the data it provides.

Here's my stupid questions that I'm hoping some can help answer.

My "efficiency" rating is in the 65%-70%. From my understanding, it's basically the miles decrease in the odometer divide by rated miles. So I drove 6 actual miles, but my rated miles was 10 miles, so my efficiency is 60%. Is that accurate? I read somewhere that it's some formula like kwh x miles x weight of car or something like that? I looked on my dashboard in the energy section and it showed a 270kw line, so I assume that's the 100% efficiency level?

Anyways, I'm a bit confused on 1. how some people can get over 100% efficiency (I've seen some that gets 120% ) and 2. why my efficiency is so low and how I can improve it. Yes, I know there's a lot of factors involved, but I keep my AC at 72 degrees on auto, I don't floor it acceleration pedal, my regen brake is set to "standard", and I drive mostly local streets.

Sorry for the dumb questions, but any insights from the wizards out there would be helpful! Thanks!!

 

[Watts_Up]

A couple days ago I downloaded the Tezlab and Stats app. LOVE all the data it provides.

... how some people can get over 100% efficiency (I've seen some that gets 120% )

I was wondering if the efficiency includes regenerative energy from braking or going down the hill?

 

[mark95476]

Try longer trips. Short trips aren't efficient in any vehicle.

A ridiculous example--lets say your car is parked in your drive way.
A) Turn on your car.
B) Drive 5 feet.
C) Turn off your car.
D) Turn on your car.
E) Drive back 5 feet to it's original position.
F) Turn off your car.

Repeat A to F hundreds of times and you'll have traveled very little distance and expended a lot of fuel (gas, electrons) which will give you really awful efficiency.

Your Y is an amazing car so I hope you try to enjoy it and don't worry about numbers some app is giving you.

So I've had my Y for almost a month now. LWD on 20" induction wheels. Got 600 miles on it. A couple days ago I downloaded the Tezlab and Stats app. LOVE all the data it provides.

Here's my stupid questions that I'm hoping some can help answer.

My "efficiency" rating is in the 65%-70%. From my understanding, it's basically the miles decrease in the odometer divide by rated miles. So I drove 6 actual miles, but my rated miles was 10 miles, so my efficiency is 60%. Is that accurate? I read somewhere that it's some formula like kwh x miles x weight of car or something like that? I looked on my dashboard in the energy section and it showed a 270kw line, so I assume that's the 100% efficiency level?

Anyways, I'm a bit confused on 1. how some people can get over 100% efficiency (I've seen some that gets 120% ) and 2. why my efficiency is so low and how I can improve it. Yes, I know there's a lot of factors involved, but I keep my AC at 72 degrees on auto, I don't floor it acceleration pedal, my regen brake is set to "standard", and I drive mostly local streets.

Sorry for the dumb questions, but any insights from the wizards out there would be helpful! Thanks!!

 

[im4uttx]

So I've had my Y for almost a month now. LWD on 20" induction wheels. Got 600 miles on it. A couple days ago I downloaded the Tezlab and Stats app. LOVE all the data it provides.

Here's my stupid questions that I'm hoping some can help answer.

My "efficiency" rating is in the 65%-70%. From my understanding, it's basically the miles decrease in the odometer divide by rated miles. So I drove 6 actual miles, but my rated miles was 10 miles, so my efficiency is 60%. Is that accurate? I read somewhere that it's some formula like kwh x miles x weight of car or something like that? I looked on my dashboard in the energy section and it showed a 270kw line, so I assume that's the 100% efficiency level?

Anyways, I'm a bit confused on 1. how some people can get over 100% efficiency (I've seen some that gets 120% ) and 2. why my efficiency is so low and how I can improve it. Yes, I know there's a lot of factors involved, but I keep my AC at 72 degrees on auto, I don't floor it acceleration pedal, my regen brake is set to "standard", and I drive mostly local streets.

Sorry for the dumb questions, but any insights from the wizards out there would be helpful! Thanks!!

I don't think 270kw line is "100%" efficiency line. It's the line that gets you to 315 mile range...or approximately.

 

[dmh444]

I don't think 270kw line is "100%" efficiency line. It's the line that gets you to 315 mile range...or approximately.

Maybe I'm calculating it wrong, but the MY has a 75kw battery, so if I do 75000 / 270, i get 278 miles. To achieve 315 miles, your efficiency has to be around 240wh/mile. Hence why I'm confused why Tesla uses the 270 figure.

 

[kjm]

Interesting read on efficiency Tesla Model 3 Efficiency & Vampire Loss — How To Save Energy