I seem to have a battery issue. I recently purchased my 2015 Model S 90d from the NJ Tesla CPO (april 2019) with ~34,000 miles on it. Upon pickup the car was charged to ~80% and showed 205 mile range. I have 48,500 miles on it now, when I charge to 90% (81Kw) and drive to and from work everyday, I am down to 5% battery (~15 miles) after driving 182 miles consuming only 53.1Kw per the vehicle logging. I only drive in”Range Mode”. No heat, A/C set at 23C with an outside avg temp of 26C. My commute speed averages 60mph, 43 miles each way everyday. I have lost 24Kw or 20% of battery capacity, based upon the "available miles" upon the first day of pickup, this was the state of the battery upon purchase with ~34,000 miles on the clock in April 2019. Please explain. I didn't think about the range because I was a first time Tesla owner and I figured it was due to a fresh software load and mileage would settle out later....it never has. I charged to 100% one time because of a long trip and the rated range was 250 miles. I see Given that 5% = 4.5Kw my battery only yields 57.6Kw of use on an 81kw charge, I seem to be missing some capacity. I normally charge to 80-90% and get an avg of 40-50 miles (210-230 miles) which is about 50-70 less than the calculated and estimated capacity of a 90Kw battery. My max rated range at a 90% charge is 230-233 miles in “Range Mode” with an average 295Wh/m usage, that results in 53-55Kw capacity. It should be closer to 270 miles based upon a 90Kw battery with a charged 90% (81Kw) capacity and usage. This does not seem right. Each morning I only lose 4-5 miles over night with no preconditioning. So I am losing only 1-2% over a resting period of 8 hours, I understand temperature fluctuations occur and it is cooler in the morning, so really no loss occurs. I just completed a 1200 mile road trip and never reached over 200 miles per 85-90% charge except when the Supercharger forced a 97% charge in order to "just" make it to the next charger with 5% remaining, I pulled into planned supercharging stations with less than 10% remaining on 3 occasions. I was almost unable to reach one supercharger when I pulled in with 5% remaining and systems were shutting down. Driving was utilising smart cruise control at the speed limit and +5mph averaged days had little wind and avg of 88 degrees outside. Seeing this it seems that I have “lost” 20Kw how do I get this fixed? I have attempted to schedule mobile and in store service but the App continues to tell me that my registered phone number is invalid and will not allow scheduling.