EQE SUV range delusion – despite alleged 600km range?

Hello, I have been driving the EQE SUV 500 with the 20-wheels for 8 weeks. Professionally always long distance (Zurich – Frankfurt – Zurich or Zurich – Bordeaux – Zurich). Initially the temperatures were still in the upper double-digit range and I came with normal driving mode (CH 110 km/h, DE/FR 140 km/h) and heating only on the driver side with continuous 450-490km range. Never more than 500km. However, the temperatures have fallen sharply since 14 days and thus also the range. With energy savings I get to 351 km. With 100% charge I get to 326 km. This is a huge disappointment for me. Does the product manger Tim Riesebeck speak of the EQE SUV (500) himself from just under 600 km of range from minute 4:00 EQE SUV 500 times in the round, what does this look like for you? Who drives the EQE SUV, and how far does your range go down?