Driving KWh use versus charged KWh?

[GmP]

As a relative newbie (CT is my first Tesla, first electric car, own it since 31 August) I have an “is this normal” question:

Per my screen I have driven in the almost five months I have the CT 5049 miles, using 1792 kWh, for an 355 Wh/m average.

Since I use either Chargepoint or Tesla superchargers I could easily track how much I charged: a total of 2216 kWh.
That is almost 25% more! I was expecting some overhead for non driving usage, but 25% is a lot.

Is this normal?

Btw:
I paid a total of $854 for the charges. Comes down to 17c/M.
Not bad for a truck I think, never owned a truck before?

However compared to my last ICE car which got 22.5m/g low grade gas at $4.50/g average that is 20c/M, not very much cheaper.
Same drives, same drive style, CT even a bit less aggressive.

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[yohst]

24% seems high. Some energy loss is to be expected; climate control, charging losses, possibly some vampire drain etc. This article describes and talks about a 10% loss. I have driven approx the same amount of miles as you, would be interesting to compute that.

oh and sorry to be pedantic it is Wh/mi (not Wh/m), gallon abbreviates to “gal” not “g” (that is gram), capital M is Mega, not mile. ;-)

 

[mongo]

As a relative newbie (CT is my first Tesla, first electric car, own it since 31 August) I have an “is this normal” question:

Per my screen I have driven in the almost five months I have the CT 5049 miles, using 1792 kWh, for an 355 Wh/m average.

Since I use either Chargepoint or Tesla superchargers I could easily track how much I charged: a total of 2216 kWh.
That is almost 25% more! I was expecting some overhead for non driving usage, but 25% is a lot.

Is this normal?

Btw:
I paid a total of $854 for the charges. Comes down to 17c/M.
Not bad for a truck I think, never owned a truck before?

However compared to my last ICE car which got 22.5m/g low grade gas at $4.50/g average that is 20c/M, not very much cheaper.
Same drives, same drive style, CT even a bit less aggressive.

The first adjustment is that you are charged first all the energy provided by the charger, but charging isn't 100% efficient. It's better than 90%, but still there is loss off the top.

Then there is climate control while charging as the vehicle either cools the pack or warms it for best charging performance.

Then there is untracked energy usage. Sentry mode and preconditioning along with normal sleep energy usage don't get added to the driving energy usage. Nor does overheat protection (if that is turned on).

Finally, fractions/ ratios are funky. If a system is 80% efficient, non-tracked energy is 20% of the total, but the total is 25% higher than tracked energy. 1792/2216 = 81% tracked energy. Which, for example, would be 90% charge efficiency and 90% of energy used while driving. (Which is also 10% charging loss and 10% standby/ preconditioning).

 

[igs]

Your truck is using power 24/7 even when not driving and especially more when sentry mode is on.

 

[AlmostHuman]

The real benefit from a cost standpoint comes from charging at home. Superchargers or 3rd party chargers are often going to be the same or more cost than fuel in the end.

 

[furbyland]

The real benefit from a cost standpoint comes from charging at home. Superchargers or 3rd party chargers are often going to be the same or more cost than fuel in the end.

That is the best point when it comes to cost to charge. 3rd party can be crazy rates.

 

[AlmostHuman]

This is one of the things than can make an EV cost less to operate over time.

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