Have you guys seen a Wh/mi so high?

[DRMO]

Model Y LR with Induction wheels

I drive maybe 20 miles a week and pretty much just city driving. My efficiency looks like trash lately. My driving habits have not changed either. The only factor could be that it is getting colder where I live (Seattle) and as we know the efficiency drops in cold temps. Anyways maybe someone with more insight could let me know how normal this is?

 

[Sans-gas]

All thing equal, you will find a big reduction in battery efficiency as weather cools, even here in Western WA.

 

[gaswalla]

0.9 miles. It’s including energy used before you started the drive. (a/c?)

 

[DRMO]

0.9 miles. It’s including energy used before you started the drive. (a/c?)

That makes sense however I do not pre-warm climate and pretty much drive off as soon and I hop in the car.

 

[spokey]

Model Y LR with Induction wheels

I drive maybe 20 miles a week and pretty much just city driving. My efficiency looks like trash lately. My driving habits have not changed either. The only factor could be that it is getting colder where I live (Seattle) and as we know the efficiency drops in cold temps. Anyways maybe someone with more insight could let me know how normal this is?

I drive a little more than that, about 20mi / day since delivery. Probably drive 3 or 4 times a week. I'd probably have about that at .9 mi. I have to go uphill for about 20' to the main road. I often see 1100-1500 if I look around 1/4 mile. By the time I'm 1 to 2 miles down the road it will have dropped to 240-260.

 

[jcanoe]

By swiping up and down you can view This Trip, Since Last Charge, Trip A or Trip B. I also see very high numbers for This Trip for the first mile, then the value starts to come down. Right after charging there is no option for This Trip until the next time you drive. I don't attribute this to preconditioning but to the sampling interval. When you first start driving there are very few (possibly only 1) sample.

 

[SSedan]

The initial cabin heating is a big initial draw

 

[DSolie]

A cold battery is an inefficient battery. I’m down in Oly, and if I don’t peheat my MX my trip to work is crap.

 

[drtimhill]

Model Y LR with Induction wheels

I drive maybe 20 miles a week and pretty much just city driving. My efficiency looks like trash lately. My driving habits have not changed either. The only factor could be that it is getting colder where I live (Seattle) and as we know the efficiency drops in cold temps. Anyways maybe someone with more insight could let me know how normal this is?

Thats high .. i see winter energy use going up by 30-40 percent but you are way higher. If you are stuck in stopped traffic for ages the heater might be doing it but even that i doubt.

 

[Srad600Volt]

My initial numbers seem to be that high as well (within a mile of leaving my house), then then decrease over the course of my drive. My total numbers seem to be inline with what others are getting though.

 

[SSedan]

The shorter the trip the greater the impact of initial cabin heating

 

[Raechris]

Model Y LR with Induction wheels

I drive maybe 20 miles a week and pretty much just city driving. My efficiency looks like trash lately. My driving habits have not changed either. The only factor could be that it is getting colder where I live (Seattle) and as we know the efficiency drops in cold temps. Anyways maybe someone with more insight could let me know how normal this is?

As another suggested we need to see the other trip meters with longer intervals. I keep one for the season and Lifetime. So far they are in the 235 range. Your graph is Driving and could be a hill, acceleration, running heat on high,etc

 

[TomServo]

All EV's start off horribly, then as you drive it starts to come down, your short trips are killing your Wh/mi readings. You can easily test this by taking a 15 or 20 mile cruise.

 

[spokey]

We know that whether ICE or EV that your initial acceleration kills mileage. Seems to me that those number are simply that. Initial starting out large energy use. You don't need any warm up or anything else. One acceleration in that short a distance? Numbers seems OK to me.

 

[johnmodely]

0.9 miles. It’s including energy used before you started the drive. (a/c?)

Tesla does not include power draw when not driving in that graph. Only starts calculating when your moving.

 

[spokey]

maybe not in the graph, but if I reset my trip 'A' (which I generally do in order to define a 'trip' my way) and turn on the HVAC a couple minutes before leaving like I did this morning, the initial reading is huge. I had around 1700 just backing out of the garage. After going up hill a little to the main road and maybe .2 down that, it had dropped to 900 and was I think around 4 something at the first mile. My total 8 mile trip was somewhere in the 230s.

 

[mark95476]

Just a comment:
You'll probably get around faster by walking (<1 mile in 16 minutes).

 

[spokey]

That would be a pretty brisk, but doable, walk. 3.4 mph.

 

[mark95476]

Going up generally means going back down. Power dissipation is high going up (peaked at ~900 Wh/mi), but with the MY's regen braking, you get energy back.

This past weekend we went hiking and drove up Highway 9 to the Sierra Foothills to the Sierra Gap Preserve, drove north on Skyline, down Page Mill and back to Mountain View. ~45 miles with a ~2000 foot elevation change up Hwy 9 gave an average dissipation 211 Wh/mi.

Projected range of 232 miles with 55% SoC. One of these days, I'd like to do a range test where check how many times I can go up and down the mountains. This is more relevant to what I do day to day instead of a highway test going 70 mph. I figure a long road trip will be <1% of my driving right now. Hopefully long road trips will be significant in the future.

 

[Silicon Desert]

That makes sense however I do not pre-warm climate and pretty much drive off as soon and I hop in the car.

Forget that. He's right. You shouldn't be looking at efficiency over a distance of less than one mile. Try SEVERAL miles.