It has been sub-freezing for most hours of the day here in Northern New Jersey this past 10 days, and I thought I'd post on the effect that has had on my range. I do not have the battery heater. Mine is the base model 2-wheel drive, 2022. During warm weather, non-highway driving, I averaged 4.5-5.0 m/kWh, or a potential range with the 77.4 battery of around 345-355 miles. On the highway in warm weather, I got 3.7-3.9 m/kWh, or 290-300 mile range. In this cold spell, I'm down to 3.2-3.4 m/KWh or 248-263 miles for non-highway driving. I have not done much highway driving to have an estimate. I usually rely on the seat heaters, and rarely run the cabin heat, except in rain/snow. The GOM is totally confused by this change, so I use the m/kWh reading and multiply to estimate my remaining range.
With temps back up to the high20s low 30s, I'm back to 3.9m/kWh, and range 275-290. We rarely have the heat on, but even the seat warmers have a significant negative effect. Still, pretty pleased with the range. No noticeable loss of power.
