Tesla advertises the EPA rated range. If you drive a Tesla to match the EPA test, it will get the EPA tested range. If you drive slower, like Bjorn did, you will get even more miles. I think he got over 400 miles from a M3 driving around 50 mph.
It's tiresome seeing so many people constantly say that Tesla lies about range; I really think that is not true at all. They advertise range under a very specific condition.....EPA rating. Not Tesla rating, EPA rating. If you drive faster than the EPA criteria, you will get less than the EPA range. If you drive in colder weather then the EPA range test, you will get less range.
To say that Tesla will not achieve EPA rated range is a false statement without clarifying by saying that you if you drive under different conditions, your range won't match the EPA range test.
I bought my M3 in December and in 4,000 miles have averaged 256 Wh/m, which gives about 300 miles of range, compared to an EPA range of 334. 10% loss for cold weather is probably about right. In summer, I'm assuming my consumption will decrease, efficiency will improve, and I will likely closely approximate the EPA rated range. Having said that, I don't drive 85 mph everywhere I go. Anyone who does should not expect to achieve the EPA rated range.
The opposite is true. If Tesla got their rated range when driving 85 mph constantly, then we could say that Tesla is lying about EPA rated range since the car should NOT get that much mileage in those driving conditions, only under EPA driving conditions.
Inside EV's got 310 miles from a 75kWh pack M3 when driving at a constant 70 mph......WAY faster than the EPA range test conditions. This means that an 82 kWh car should go about 30 miles further based on additional 7 kW capacity. This is quite close to EPA rated range despite driving at a much faster speed.