Same here, iX40, about 180 miles in these temps on longer trips at higher cruising speeds, average 2.5 mi/kWh when below freezing. But way better than my e-tron. Which has a bigger usable battery but similar overall range in winter.
Side by side the iX is also more efficient on a day to day basis with local trips to town and back circa 8 miles each way with the Audi getting approx. 1.2 to 2.2 mi/kWh and the iX getting 1.8 to 2.7 over similar trips on similar days/temps. For example, yesterday, two side by side identical trips to town, 11 miles round trip, wife in e-tron 1.9 mi/kWh, me in iX 2.7 mi/kWh. Even accepting different driving styles and different use of regen, that is a good bit different in efficiency.
On that specific trip 1.9 x 86.5 usable battery e-tron when new = 164 miles max. 2.7 x 71kW usable battery battery iX = 191 miles.
All sort of irrelevant for me being lucky enough to have a 7.2kW home charger. Range and small trips do not matter at all, just enjoy the car.
Longer trips, say 300 miles, the iX gets way better efficiency on the second leg after charging to 80% at HPC. Which only adds to the annoyance of not being able to precondition battery manually for the start of a trip - which we can do in the Audi From the car or app.