Thanks for that Tom,

I am wondering how best to apply that to the Ampera... indeed, to other cars?

I have made the assumption that the ideal range was the range likely achievable under ideal conditions. i.e. the max range you would expect to get.

Should we be changing the names, and indeed the purpose altogether, for these two values? Also, EPA does not really apply in other parts of the world where they might have their own range rating system.

I would prefer to see a more generic range estimation protocol that can be applied across all models and that is user adjustable perhaps through parameters?

Any thoughts?

On 29 January 2014 06:11, Tom Saxton <tom@idleloop.com> wrote:

Ideal miles is a terrible name because it implies something very different from what it is.

Tesla was forced to come with a new name because the EPA changed how they evaluate vehicles, giving less optimistic numbers for gas mileage as well as electric efficiency and range. So Tesla called the new numbers the much more descriptive "rated range miles", while still using the "ideal range miles" as their estimate of what the range would be under the old EPA scheme.

Tom