I have a 2020 Turbo with 21" wheels so I tend to get less range than other Taycan models. Also I live in Michigan and temps have been in the 30's and 40's recently. I have the performance battery plus which is rated at 83.7 kWh usable but probably is less than 80 kWh at this point (maybe 75?).
My consumption in the winter averages about 2.1 miles per kWh. So if my battery has 80 kWh that gives me a real world range of 168 miles. If my battery only has 75 kWh, the range is 158 miles. The car predicts a liot more than this (218 in normal mode and 192 on the highway) but I don't believe the car range estimate. After my most recent charge, I drove 84 miles (all short trips in the cold) and used up 59% of my charge. So that translates to a real world range of only142 miles. My real world range for something like a long highway road trip is probably between 142 and 168 miles, depending on temps, road conditions, and wind.
In the summer, my range is around 250 miles under optimum conditions. (no wind, dry, temps in the upper 80's). Winter time really knocks down my range a lot.