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Strange Ideal vs. Estimated miles behavior

Strib

Member
Jan 3, 2015
90
1
Alamo, CA
I thought the Ideal Miles calculation was based on the CAC and the Estimated Miles was discounted from this by an amount that depends on one's driving habits. But several times, while conservatively driving about 50 miles on the freeway, my Estimated Miles display actually EXCEEDED my Ideal Miles display by 4-5 miles. Anyone understand this?
 

Sparrow

S105/ Roadster 189
Dec 14, 2010
755
242
Marietta, GA
It sounds like you answered your own question. You drove more conservatively than the ideal energy rate, therefore the estimated range became higher than the ideal.
 

ViperDoc

Roadster 1305
Jun 24, 2011
419
209
Vermont
If I recall correctly, the "Ideal" is based on a stable average speed of 55 mph. I have had the experience you have had, but usually when I have been driving on roads with speed limits around 35 or 45 mph
 

thefortunes

Active Member
Jun 14, 2013
1,073
1,266
Wisconsin
The other thing that factors in is that the Estimated Miles is based on a short (I'll let someone else chime in here as I do not recall) sampling distance.

Because the last 6 miles of my 54 mile typical commute home is through town, I regularly reach my garage with more Estimated than Ideal miles (at least in the summer).
 

Chris Lockfort

2008 Tesla Roadster 1.5 + 2015 Zero SR
The other thing that factors in is that the Estimated Miles is based on a short (I'll let someone else chime in here as I do not recall) sampling distance.

Because the last 6 miles of my 54 mile typical commute home is through town, I regularly reach my garage with more Estimated than Ideal miles (at least in the summer).

If I recall it's 40 miles, and it's stored in one of the not-encrypted files that you can dump via USB (whpm.log).

My estimated goes over ideal all the time when I come down from mountains, charging my car as I zoom past vehicles doing the considerably more inelegant periodic braking and idling.
 

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