This week, I've been getting 182wh/km (291.2wh/mi), which isn't terrible but not great.
Based on the photos attached, I'm getting terrible range. I can hit 250km (156 miles) , but that's ONLY if I go down to 0% (starting off at 80%). The temperature is only 11degC (52deg F). That leads to me 2 questions:
1) At what temperature will I start seeing range degradation? I'd figure that 11deg C wouldn't cause range loss but I'm not sure.
2) My driving habits only involve me driving my daughter to and from daycare. This is a total of 10kms per day, but I will make the odd errands but not much. On average, I'm only driving 10kms per day; does that give me worse range given that I'm only driving short periods?
My lifetime (over 64K KM) is 170 wh/km. (I checked the other day while riding in the car when I first read your post so this isn't a guess!)
That is over 3 full winters, 2 of those with winter tires (which will hit your range as well as the temperature but I already knew that from my Prius which was the first car I owned where I obsessively tracked my mileage.)
We are a single-car family but all driver profiles are set to Chill. Our old bones can't take the pressure if we boot it, even when braced for the force. Plus it scares the grandkids.
As it is our only car, it is a decent mix of highway and city driving. Four 3500+ KM road trips, six trips of 700km round trip to a rental cottaage, and a few day trips from Ottawa to Peterborough. Our son lives an hour away via 100 kph and 80 kph highway and there are a significant number of trips out there, plus trips down to the Seaway so I can see ocean going ships. The joy of an EV is that day trips like that cost so little because the charging is all done at home (even Peterborough only includes one SC so is about $20.) The rental cottage trips are basically free as the return trip is powered by the free L1 charging from the cottage.
Now to your questions:
1. I'd say probably 15*C is where I notice range start to drop. My best drives ever have been on the highway when it is over 30*C outside. Even with the a/c blasting fully the whole way, we posted 105% efficiency one day when the outside temp was 35. We are lucky our car is kept in a heated apartment garage (but limited to L1 charging as a result) but in all cases we are sure to precondition before we leave on a trip. It does make a difference.
2. Yes, short runs give you terrible range. After about 6 months we signed up for Teslafi and so I can give you some real examples. (The details on my model are in my signature. and I have 19" wheels, both summer and winter.)
My drive to church is ~5km. On October 15 the outside temp was between 8 - 10 and the average efficiency for that trip was 76%. BUT it was 58% on the way there and 111% on the way back because of the topography of the route.
On October 17 I had a ton of long and short runs within the city (my daughter lives car-free so I had to run errands with her), She lives 17 km away in the city with over half that being at freeway speeds. The difference in efficiency is amazing between the longer highway routes (obviously at higher speeds) and in her area (at 40 - 50 kph.) Basically the short runs in her area were at 63% efficiency, the longer runs were at 80 - 90% efficiency. Amusingly the highway trip home was 93% efficiency but it took 47 minutes. She lives 22 minutes away (on average) but it was rush hour. My efficiency for the day was 92% over 72 km thanks to the long highway drives in slow traffic (average temp was 15.)
In general, I never think about my range in the city because I know I'll recharge before the next day, but looking at my October drives, on an above average October temp day, I'm looking at about 60% efficiency.
When I'm planning road trips, I plan on 80 - 85% efficiency but those are all between May and October. One's speed makes a huge difference so that lower number is for freeways, the higher number is for undivided highways.
Now let's look at the hit winter will give you:
January 15, 2022, average temp for the day was -20*C, my efficiency on the drive to my son's (half freeway, half undivided highway) was 53%. It was sunny and -24 on the way there. The full day's efficiency was 54% including some errands run on the way home. The exact same route at -1% gave me 83%. At 24* in June, that was 86% efficiency. The latter two are without winter tires, for reference. I can't think of a day I've done that trip that was exceptionally warm but with winter tires on, so can't see the range hit from winter tires. In the Prius it was at least 7%.
Over the first year of owning your car, you'll get a sense of what your range is and that part of range anxiety will go away except during power failures and on long road trips. On road trips, you'll get used to making changes to your routes so that you can hit Superchargers, And you will grumble about how the Tesla Fan Boys never seem to have ever wanted to drive somewhere without L3 charging options so they dismiss your range concerns out of hand.
My first road trip with the car was to the rental cottage. We had to come back 85% of the way home for a Celebration of Life in the middle of our stay. We got the car to 100% to leave but then, after driving 2.5 hours to the event, we had to drive another 30 minutes to our city's supercharger so that we could get back to the cottage. There are no L3 chargers between the cottage and the city. My Tesla doesn't have the range to drive for 5 hours without charging (and all planning software stressed that to me.)
A Tesla fan boy will tell you there's no need to be concerned, that you can go anywhere with a Tesla that you can with an ICE but they are incorrect.
The fact that NS had, for my first 4 trips there, only one supercharger in the province (and that wasn't even inside the city of Halifax) is beyond their comprehension. But it meant while I could go to Halifax without any problem, vast swaths of the province were inaccessible to me due to no charging infrastructure. Halifax to Liverpool (a lovely day trip to visit family) is a 350km round trip from the AirBnB I use (partly because it gives me free L1 charging.) While technically I could do it, with the 50km range left, that assumes I leave at 100% and don't plan to use the car for the next couple of days (due to the L1 charging speed.) Last time I checked there are no public L3 chargers within Halifax but when I was planning this trip, the CCS adapter wasn't out yet so I couldn't use them even if they existed. The only other alternative would be the 50km detour on my return, out to Enfield to the Supercharger. That would add an hour to a long day trip.
Tesla's are far closer to perfect than other EVs due to the charging network. But they are still imperfect if you intend to take your vehicle beyond the areas of Canada deemed Supercharger worthy. I have a CCS adapter now but when I went to use it on my last road trip, the station I pulled into wasn't working so I ended up diverting to a Supercharger. That reinforced how a Tesla is the best EV for Canada but it also reinforced how I can't count on non-Tesla L3 charging networks so an EV is unsuitable for people who want to travel our vast country by car.
