FFE-Guy wrote:It's been -5C in the mornings the last couple of days, here in the Toronto Area. I unplugged my car after more than enough time for a full charge and I had only 170km. Other times I've had 183km-209km! My garage is not heated, but it's not super cold, either.
When I drive to work I'm usually in the + when I park. But when I leave, no matter what I do, I always tend to lose kms and end up in the negative. It's so frustrating.
Don't get frustrated: Its just the nature of the beast. You can't always have +'s if you did the car would be infinitely efficient! More than likely your work is at a lower elevation than your home. Thus when you go to work your car is going downhill (even slightly) and coming home you're going uphill.
I had a similar situation with my FFE: My work was at a higher elevation than my home: -'s in the morning and +'s in the evening.
In addition, the GOM isn't just giving you a range from your overnight in the garage it also uses the prior days trip to calculate the guess. Thus over time as the temp has dropped you're using more juice to get where you are going and the battery capacity has dropped a little (and the heaters run more to keep the battery warm). Thus the Wh/mile increases lowering the GOM guess. So on a full charge in the morning your range will be lower...Its the nature of the beast.
If you are getting about equal +'s and -'s then you're driving as efficiently as you can (anything else and you're either catching up or falling behind the top of that efficiency curve).