Lifetime Average Wh/mi

[yobigd20]

I hit 65k about 10 or so days ago.

 

[Rodolfo Paiz]

My car just had its second birthday. I keep wondering why my energy consumption is so high: is it the Performance variant, the sticky tires, the Florida A/C use? I'm not that aggressive a driver any more, so I have no idea why my lifetime average has held pretty steady within the 365-368 range. Hmm. Any ideas?

Here's my current update on consumption. This last month had even higher than usual energy burn, because we did a drive to Orlando on the Turnpike. Family and bags in car, A/C set to 70F (outside temp 80F), and 75 mph yields 350 Wh/mile, while 80 mph uses up 400 Wh/mile. Rain adds about 40-50 Wh/mile. I have no idea what people are doing to get sub-300 Wh/mile numbers, because whether we're in town or on the road, the numbers are always in the high-300's as an average.

Format: total miles, miles this period, Wh/mile this period, Wh/mile lifetime

•130329-140430: 7275, 000, 366, 366.00
•140501-140531: 7775, 500, 366, 366.00
•140601-140630: 8026, 251, 339, 365.16
•140701-140731: 8166, 140, 347, 364.84
•140801-140831: 8642, 476, 369, 365.07
•140901-140930: 9626, 984, 369, 365.47
•141001-141031: 10069, 443, 370, 365.67
•141101-141130: 11123, 1054, 378, 366.84
•141201-141231: 12040, 917, 370, 367.08
•150101-150131: 13095, 1055, 362, 366.67
•150201-150228: 13689, 594, 388, 367.60
•150301-150331: 14556, 867, 400, 369.53

Edit: Someone kindly suggested I check tire pressure as a possible cause of high energy use. In my case, that's not a factor: I cold-check my tires twice a month and always set them to sticker plus 1 psi, which is 43 psi for the Tesla 21" setup.

 

[stevezzzz]

I think your numbers look about right, Rodolfo, given:

1. Sea level == dense air
2. High average temps == high A/C loads
2. 75mph-85mph is about 13-23mph above my sweet spot when trying to stretch highway range: 62 is not agonizingly slow, but yields a big improvement in range.

And please quantify "I'm not that aggressive a driver any more". :biggrin:

 

[glhs272]

From last week. I will be resetting my trip A "winter mileage" on April 14th (Oct. 14 2014 to Apr 14th 2015). I won't be doing that anymore, 2 winters and 1 summer is enough. Going to free up my Trip A for more local trips and such. Trip B will continue to locked to lifetime mileage and energy for as long as I can.

 

[joer00]

My car just had its second birthday. I keep wondering why my energy consumption is so high: is it the Performance variant, the sticky tires, the Florida A/C use? I'm not that aggressive a driver any more, so I have no idea why my lifetime average has held pretty steady within the 365-368 range. Hmm. Any ideas?

There are a few reasons:

1.) You do not drive like a grandfather
2.) You have a lot of city or "city like" driving.
3.) You do not do aggressive regen.

That 300 numbers are just not achievable in metro areas like Miami or Tampa/St Pete where I live UNLESS you drive like a grandfather. I realized that I get sub 300 numbers as soon as I am in a rural area with long freeways at 50-60 mph.

I averaged 351 on my old P. I am getting around 370 now with the P85D in Range mode and >400 in standard mode. I did some tests and do get it down with grandfather driving and aggressive regen in the 320 range. But what is the point of getting a P85D ? 90 % of my charges are on free chargers, so I do not care about the consumption.

HAVE FUN, or by a LEAF if you want to drive in sub 300 consumption

 

[dirkhh]

1.) You do not drive like a grandfather
[...]
That 300 numbers are just not achievable in metro areas like Miami or Tampa/St Pete where I live UNLESS you drive like a grandfather.
[...]
I did some tests and do get it down with grandfather driving and aggressive regen in the 320 range.

Wow, there's some trash-talking going on here... am I sensing some age-issues, joer00?
I happen to know a few people with grand children who enjoy what I call "a spirited approach to driving"... so let's use descriptives that aren't prejudicial, please... how about "slow driving, avoiding strong acceleration"... completely unrelated to age or gender or family status...

 

[Bugeater]

March mileage plus a few days.

 

[Rodolfo Paiz]

I think your numbers look about right, Rodolfo, given:

1. Sea level == dense air
2. High average temps == high A/C loads
2. 75mph-85mph is about 13-23mph above my sweet spot when trying to stretch highway range: 62 is not agonizingly slow, but yields a big improvement in range.

And please quantify "I'm not that aggressive a driver any more". :biggrin:

I hear you, Steve. On your second #2, though, 62 is just not an option on the Florida Turnpike. The speed limit is 70 on a two-lane highway, and traffic flow is usually at least 75. I'd rather not get rear-ended, honked into oblivion, or generally despised.

And "not that aggressive" means I used to average 85-90, with much higher g-force readings during acceleration.

- - - Updated - - -

That 300 numbers are just not achievable in metro areas like Miami or Tampa/St Pete where I live UNLESS you drive like a grandfather. [...] HAVE FUN, or by a LEAF if you want to drive in sub 300 consumption

I definitely have fun with my car. And I definitely don't drive like the stereotypical old fogey... just ask my wife. But I will say that I've been surprised to see our consumption so far above what appears to be the reported median, hence my question. I always look for individual things that can be solved or improved before simply concluding that "it is what it is" and living with it. As it is, though, I now plan trips at a projected 420 Wh/mile (realistic) or 450 Wh/mile (worst-case), with a 30-mile reserve, so my effective range on a normal long-distance trip is somewhere between 145 miles (worst-case) and 160 miles (realistic) between chargers, assuming I start with a full charge.

Looking forward to a 110 KWh battery in our X...

- - - Updated - - -

Wow, there's some trash-talking going on here... am I sensing some age-issues, joer00?

With all due respect, it sounded like humor to me. Besides, the stereotype of drivers 65+ being slow, methodical, and careful is probably accurate. I'm sure there are plenty of exceptions, but that does not invalidate the aggregate data for that population, nor does it make joer00's comments inappropriate. Driving behavior is to some extent correlated with age, gender, and family status: I drive less and less "spiritedly" as I get older (and my reflexes get slower), women tend to drive more cautiously than men, and married people drive more cautiously than singles. That's borne out by the statistics. And even within categories, the trends apply: I drive more carefully when my kids are in the car than when I am alone, for example.

 

[Bugeater]

Rodolfo, I have a P85 too. Mine has 21" wheels. I have found that if I run with A/C or Heat running, I get around 360 - 380 WHr / mile or higher. I have even asked Tesla if there was something wrong. The answer is always no. All is OK. However, if I turn off the A/C and Heat I can get close to 300.

Once we were driving late at night and didn't realize there was quite a climb ahead. During the climb the car said there was about 20 miles rated range left and 45 miles to get to our destination. I slowed down to 40 or so. Things started looking better but still not enough. Fortunately the terrain leveled out and we made it with less than 20 rated miles range left.

 

[Great Dane]

here are My nubers foe March
998 miles on 38 dollars
That includes the magic 1.3 multiplier to
get real kw from the wall usage

 

[gbdesai]

Model S P85
Oct 2013 Delivery
20" Michelin PS2 (changed on delivery day)
24,000 miles on ODO

378 Wh/mi average

 

[blogth]

S85D, 6.2
Delivered 4/10/15
Temp range 50-70, 50-75 mph, 5,000-6,700 msl, hilly.
1004 miles, Total: 313.9 kwh, Average 314 Wh/mile.
Love this car so far....

 

[Papafox]

S 40
Delivered 5/2013
Temp range 70-90, mostly highway, hills to cross, 55-60mph
279wh/mi. lifetime, 269wh/mi most recent 3500 miles

 

[efusco]

i sure am enjoying Spring weather!

 

[SeminoleFSU]

330 wh/ mi

 

[Sparrow]

 

[paco3791]

ONE-MONTH: paco3791, 05-01-2015, 290 Wh/mi, 1796.4 mi, IL, S60, 19" (April) LIFETIME: paco3791, 05-01-2015, 324 Wh/mi, 33467.4 mi, IL, S60, 19"

Back on all seasons starting this month.

 

[mknox]

Haven't posted in a while, but here are my April numbers:

April:
2,118.7 miles
698.8 kWh (from car)
330 Wh/mi (from car)
918.2 kWh (measured)
433.6 Wh/mi (calculated)

Lifetime:
46.466.5 miles
15,900.1 kWh
342 Wh/mi

 

[jkliu47]

April 2015
696.4 miles
224.8 kWh
323 Wh/mi

March 2015
547.1 miles
169.4 kWh
310 Wh/mi

Lifetime
13,876 miles
4532.1 kWh
327 Wh/mi

 

[Klaus]

April and lifetime.