MPGe help & predictions

[JBee]

Now you’re dreaming…

30 yrs. into Future for wireless energy sans grid, sans infrastructure and sans economy of scale, Starlink is not beaming fusion energy to ground yet.

Venezuela and Iran fossil fuel costs are corner cases in isolation.

You are correct to assume fossil fuels will power under developed countries until costs flip in favor of EV transportation

I like dreaming of a "wireless" future. It is powered wirelessly, not by starlink fusion, but rather solar fusion by radiation from the sun.

The primary reasons that solar powered devices are cumbersome in their use are:
1. the sun only shines during the day when it's light out
2. that weather affects how much power can be used at that particular time.
3. that peak power needs can't always be met without installing excessive solar that in turn reduces affordability

Essentially if it's not day time and there isn't good weather (or your at a high latitude) you're stuffed if you rely on solar. To overcome that you need storage, so that your time of charge (daytime with good weather) can be different to your time of discharge and use (night time and cloud cover).

Now not all storage has to be in bulk, or attached to a house or car, or electrical network for that matter. A lot of tech can actually work from modern batteries directly if done right. So batteries for devices that need power most of the time. Notebooks without batteries are just plain desktop computers, mobile phones without batteries household cable phones, EV's without batteries are electric trains or trolley buses etc. In fact typically the closer we can install energy storage to the site of demand the better it's portability and accessibility for use by a consumer. Portable power is possible and a worthwhile endeavor as it adds convenience and efficiency.

My previous post on developing nations and battery storage was meant to clearly demonstrate that not all electrical demand is the same, and because the needs in developing nations are different, we shouldn't force them to use fossil, or outdated grid network technology to empower their lives and add a little bit of an improvement in standard of living, by giving them a cost effective and functional solar flashlight and mobile charging source.

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[Diehard]

Yeah, apparently they didn't even need to revolt when he left for heart surgery. But hindsight is 20-20.

-Crissa

His son is a quite intelligent and capable fellow. The dad sold out to stay in power ( Mosaddeq fiasco and a bunch of other things), I believe his son would run a different show if he had the chance. Without the revolution things would be very different today.

 

[roadrunner32]

Hey everyone,

I've probably read this article a zillion times: Cybertruck MPGe

I'm struggling however to fully understand MPGe. I currently drive a Prius and a Nissan Titan. The cybertruck will replace both. With all the math I'm doing, I'm struggling to see how I'll be saving money. If I go at face value, I will be gaining 20 MPGe over my Prius, which averages 50mpg and according to the Reddit article which states the CT Dual motor will get 69/70 mpge.

Sooooo....

My Prius has 160,000 miles and averages 50 MPG. That means over the course of the vehicle I've used 3,200 gallons of gas and if I average gas at $2.50 I would have spend $8,000 in gas.

The Cybertruck will get 70 MPGe. If I assume that I drive 160,000 miles on the CT and I use the 33.7 KW / gallon that means that I would have used 539,200 KWH of energy. at 13 cents per kwh, I would have spent $14,019.20 in energy cost.

That can't be right. Any help would be appreciated.

To determine the comparison between the Prius and cyber truck, I think you need to know miles per kWh for the CT and forget about the 33.7. I use the advertised figure of 27 kwhr/100 miles for my model Y LR. I also use the size of the 75KWH battery and assume it will complete 300 miles. I then compare MPG of various comparable cars to the Model Y. Now...... what I'm really looking for is how to reply to the nay sayers that say "Well the electric car uses just as much or more cause it takes fuel coal and natural gas to generate the electricity." Early on, it was stated by Tesla that it uses 1/3 of the energy than does the gasoline car. But how does one prove that by calculations?

 

[roadrunner32]

To determine the comparison between the Prius and cyber truck, I think you need to know miles per kWh for the CT and forget about the 33.7. I use the advertised figure of 27 kwhr/100 miles for my model Y LR. I also use the size of the 75KWH battery and assume it will complete 300 miles. I then compare MPG of various comparable cars to the Model Y. Now...... what I'm really looking for is how to reply to the nay sayers that say "Well the electric car uses just as much or more cause it takes fuel coal and natural gas to generate the electricity." Early on, it was stated by Tesla that it uses 1/3 of the energy than does the gasoline car. But how does one prove that by calculations?

 

[Crissa]

To compare energy, you need the 33.7kWh per gallon figure. This will vary based upon the cars compared, but you can use your mpg vs mpg-e to do that. The Cybertruck will be somewhere near 75mpg-e or so.

To compare price, you need the price point of your gas or electricity. These will vary alot! Right now, some people are paying $6 a gallon and 50¢ a kilowatt hour. During the first pandemic peak, some were paying $1.79 and 3¢ so... (and there are ways to charge for free or for ridiculous amounts).

-Crissa

 

[brumgake]

Hey everyone,

I've probably read this article a zillion times: Cybertruck MPGe

I'm struggling however to fully understand MPGe. I currently drive a Prius and a Nissan Titan. The cybertruck will replace both. With all the math I'm doing, I'm struggling to see how I'll be saving money. If I go at face value, I will be gaining 20 MPGe over my Prius, which averages 50mpg and according to the Reddit article which states the CT Dual motor will get 69/70 mpge.

Sooooo....

My Prius has 160,000 miles and averages 50 MPG. That means over the course of the vehicle I've used 3,200 gallons of gas and if I average gas at $2.50 I would have spend $8,000 in gas.

The Cybertruck will get 70 MPGe. If I assume that I drive 160,000 miles on the CT and I use the 33.7 KW / gallon that means that I would have used 539,200 KWH of energy. at 13 cents per kwh, I would have spent $14,019.20 in energy cost.

That can't be right. Any help would be appreciated.

Hey everyone,

I've probably read this article a zillion times: Cybertruck MPGe

I'm struggling however to fully understand MPGe. I currently drive a Prius and a Nissan Titan. The cybertruck will replace both. With all the math I'm doing, I'm struggling to see how I'll be saving money. If I go at face value, I will be gaining 20 MPGe over my Prius, which averages 50mpg and according to the Reddit article which states the CT Dual motor will get 69/70 mpge.

Sooooo....

My Prius has 160,000 miles and averages 50 MPG. That means over the course of the vehicle I've used 3,200 gallons of gas and if I average gas at $2.50 I would have spend $8,000 in gas.

The Cybertruck will get 70 MPGe. If I assume that I drive 160,000 miles on the CT and I use the 33.7 KW / gallon that means that I would have used 539,200 KWH of energy. at 13 cents per kwh, I would have spent $14,019.20 in energy cost.

That can't be right. Any help would be appreciated.

I’m sure you’ve figured this out already seeing that it’s been 3 years, but you’re correct that your numbers are off/not ran correctly. I love EVs but man can the translations to efficiency be confusing as hell. You used MPGe, you could also use Wh/mile, or you could even use miles/kwh to do this math. I won’t go super into detail, unless you reply and want me to.. but I ran the number in all 3 ways and came up with $9-10k in electricity costs over 160,000 miles in the cybertruck. You should also factor in other things like rarely having to do brake work on an EV, as well as hardly having any other maintenance. Most of which should be covered by warranty on a new cybertruck. Plus consider what you’ll be getting with cybertruck.. a full sized truck/suv hybrid, with a solid towing capacity, the lockable bed storage obviously. It’ll be more efficient than your Prius as well as do what your truck can do. If you drove the Titan 160k miles you’d almost be out 25k in fuel, and that’s at your $2.50 price! Imagine never paying less than $4-5 per gallon, Washington state life!

 

[roadrunner32]

To determine the comparison between the Prius and cyber truck, I think you need to know miles per kWh for the CT and forget about the 33.7. I use the advertised figure of 27 kwhr/100 miles for my model Y LR. I also use the size of the 75KWH battery and assume it will complete 300 miles. I then compare MPG of various comparable cars to the Model Y. Now...... what I'm really looking for is how to reply to the nay sayers that say "Well the electric car uses just as much or more cause it takes fuel coal and natural gas to generate the electricity." Early on, it was stated by Tesla that it uses 1/3 of the energy than does the gasoline car. But how does one prove that by calculations?

I've recently thought to use the world wide recognizable unit of measure for energy, the BTU (British Thermal Unit). I plugged into AI (chat GPT) to compare the cybertruck vs Ford F150 gasoline and it came up with cybertruck being 5 times more efficient in converting BTUs to miles. I had thought of this the day before when big V8 truck was in process of parking next to me throwing out all this heat while I'm trying to get into my model Y and I'm thinking what a waste of energy!

 

[Willinak]

Can’t you just compare Kw per mile at 70 mph for each vehicle (AFV)? I would like to see that chart. KISS principle.

 

[Crissa]

Can’t you just compare Kw per mile at 70 mph for each vehicle (AFV)? I would like to see that chart. KISS principle.

Wh per mile. Kilowatts are a unit of flow (power) over time while watthours are a unit of amount (energy) total. Watt is capitalized as a proper unit while kilo and hour are not (only super-large multiple like Mega are capitalized).

-Crissa

 

[Bobo_LaDouche]

I have driven 11,100 miles for a total electrical cost of $1,117 which is $0.102 per mile. That is a blended cost of 25 cents per kw-hr pro-rated for actual usage; at home I pay 14 cents per kw-hr, and superchargers are about 42 cents per kw-hr.

My Ford F150 4 door 2022 (same size and weight as the CT) drives 320 miles for 20 gallons, which costs me $80 on average. This is $0.25 per mile.

The fuel for the Ford truck costs 2.5 times as much as the CT. If I only charge at home, the electric fuel cost is $0.056 per mile. If I only charge at super chargers, the fuel cost is 0.171 per mile.

I generally drive the CT faster than the Ford, since it is more fun. I drive the Ford about 70 mph and the CT about 78 mph. I average 425 w-hr/mile.

I just put an anti-mouse-and-rat electric device in the Ford, because I have only driven it once in the last 4 months. It's a dog to drive, by comparison to the CT.

 

[Willinak]

I have driven 11,100 miles for a total electrical cost of $1,117 which is $0.102 per mile. That is a blended cost of 25 cents per kw-hr pro-rated for actual usage; at home I pay 14 cents per kw-hr, and superchargers are about 42 cents per kw-hr.

My Ford F150 4 door 2022 (same size and weight as the CT) drives 320 miles for 20 gallons, which costs me $80 on average. This is $0.25 per mile.

The fuel for the Ford truck costs 2.5 times as much as the CT. If I only charge at home, the electric fuel cost is $0.056 per mile. If I only charge at super chargers, the fuel cost is 0.171 per mile.

I generally drive the CT faster than the Ford, since it is more fun. I drive the Ford about 70 mph and the CT about 78 mph. I average 425 w-hr/mile.

I just put an anti-mouse-and-rat electric device in the Ford, because I have only driven it once in the last 4 months. It's a dog to drive, by comparison to the CT.

Thanks for posting this info...what I was looking for.

 

[HaulingAss]

Yeah, good point, I didn't mention that. It's a 2006 titan. I only drive it occasionally for errands and home projects. Not many miles put on. My prius is 95% of my driving.

A Model 3 will be a lot better replacement for that Prius. Cheap to buy, cheap to power, and rarely needs any service. Plus its more comfortable, more fun to drive with tons more power and far better handling. It looks better too (IMO) and the efficiency is crazy good. Get an inexpensive used one with FSD if you want to go all out while still saving money.

If you rarely drive the Nissan Titan (and your primary goal is saving money) you can keep it, you don't need a Cybertruck.

If you want the best driving experience and saving money is not that important, get the Cybertruck too, it's an amazing vehicle to own and drive.

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