I'm a new owner, model S 70D refresh (and thus an actual 75 kWh battery but software limited to 70); I've had the car 12 days now. I notice that every day when I go to charge my car that the rated miles consumed exceeds the actual miles, even though my Wh/mi since last charge always seems quite good. For instance, today I drove a total of 44.8 miles (mostly freeway, TACC set to 60 mph, start and ending at home) with an average of 273 Wh/mi, 12.2 kWh used and went from a starting rated range of 192 miles (80% charge setting) to an ending rated range of 144 miles, or 48 miles of rated range used for ~45 miles of actual travel. Now if you take the 240 mile max rated range of my car (EPA sticker, I recall it was 243 on the website when I originally ordered) and multiply by 80%, that would be 192 miles so the starting reported range makes sense. If the battery capacity if 70 kWh and range is 240 that translates to an average of 291.67 Wh/mi to achieve rated range. My days driving had 7% lower consumption per mile than average rated would have yet the range consumption was 6% higher. As a cross check, I put (approximately) my day's driving into EV trip planner and it produced startlingly close agreement (better than 2%) to my reported average Wh/mi and kWh used; however it projected that I would have only used 41 rated miles instead of the 48 that actually happened (a 17% difference between projected and "measured" rated range). This has me concerned because I plan to do some long distance travel and use the EV trip planner. it seems if I follow its recommended charging and reserve and the discrepancy persists, my car will die on some of the legs! e.g. one leg has 198 rated miles used ending with 32 rated miles arrival at the supper charger but if the 17% trend holds it would be -1.3 rated miles left when arriving at the supercharger. Tonight's recharge showed 14.7 kWh consumed from my home charger to replenish the 12.2 kWh used (83% efficient seems a bit low) and ended with 191 miles of rated range. So is this normal? Is it just some calibration issue that I need to (nearly) fully charge/discharge my battery (so far lowest I've done is 40% and highest 80%) to get it on track?