Since there seems to be a fascination with the Taycan's range here.
Porsche Taycan Turbo Crushes EPA Range Rating On Our 436-Mile Drive
Had we been driving in 70-degree temperatures and no rain the range would have been even better. Even with the cold weather and rain, we averaged 2.96 miles per kWh over the 436-mile trip. If you multiply that consumption rate by the 83.7 usable capacity the Taycan Turbo has, you come up with 248-miles of range per charge. That's not bad, and much better than the EPA range rating of 201 miles per charge. The car's remaining range estimator was a little more conservative and if you add the miles driven with the estimated remaining range you get a trip average of 235 miles per charge, still way better than EPA.
So why the huge discrepancy? I honestly don't know. I've driven pretty much all of the EVs available today, and I usually agree with the EPA range rating. EV range is a moving target; there are a lot of factors that influence how far any EV can go. We already talked about battery temperature and weather conditions like rain we experienced above. Topography is another. We did lose 1,000 ft of elevation from Atlanta to Daytona Beach so that was helpful, but not really enough to make that much of a difference over a 436-mile drive.
Also notable is the fact that the EPA provided the range figures themselves, and that's not how it usually happens. Many people don't realize that the manufacturer does the range testing and provides the EPA with the range rating and the data to back it up. The EPA has the choice to accept that data and publish it, or to then do their own internal testing. In the case of the Taycan, the EPA decided to do their own range certification, and those numbers came out much lower than what Porsche expected.
The EPA only does their own testing for about 10% - 15% of the EVs on the market today, the range figures for the remaining 85% - 90% were provided by the manufacturer. The EPA just doesn't have the resources to test every car, so they randomly pick some to test internally and the Taycan was chosen.
"What's curious is that Porsche says that these EPA numbers are merely confirmation of the numbers that the automaker itself submitted to the agency, as is typical practice. And Porsche spokesperson Calvin Kim said that Porsche is not "rebutting" the EPA numbers."
https://www.caranddriver.com/n…/porsche-taycan-ev-range/