My lifetime average (soon 10000 km) is 196 wH/km. That's for a daily commute which includes a 500 m height difference, down then up, on the motorway. With summer temperatures, TACC usually set at 125 km/h on the motorway.
Hi. The information you want is available on Merijn's survey on page "Range Types Explained". Scroll down a bit. The numbers are calculated from battery capacity and typical range (or rated range in North America) of each model. For example S85 has 75900 Wh usable capacity before you go into reds and typical range is 400 km. Therefore 75900/400= 189.75 Wh/km is when typical range equals actual range. Notice this doesn't change when the battery degrades. Let's say the battery capacity degraded to 95%. That means typical range will also drop to 95%. Therefore the result doesn't change when you divide the numbers. Here is an example on how these numbers can be useful:
You want to drive 150 km and your efficiency is 218 Wh/km. What will be your typical range consumption?
Answer: Consumption will be 150km * 218Wh/km / 189,75Wh/km = 172,3 km typical range
Efficiency when EPA rated range (North America) or typical range (elsewhere) equals to actual range
Model S 60
Model S 70D
Model S 85
Model S P85
Model S P85+
Model S 85D
Model S P85D
By the way, on the stats page of the same survey you can find information on average efficiency of other users.