grahamsimmonds
Well-Known Member
- First Name
- Graham
- Joined
- Nov 18, 2019
- Threads
- 5
- Messages
- 154
- Reaction score
- 335
- Location
- Portsmouth UK
- Vehicles
- Taycan Turbo S
Yep and this shows there is no standard EPA testing regime that actually works! The Tesla ranges are unachievable and the Taycan ranges are stupidly low.Not an expert here, but from what I’ve read the EPA has several testing protocols. Frequently used are a 2 cycle and a 5 cycle test. If a manufacturer chooses the simplified 2 cycle the EPA takes the number the car achieves and derates it to 70%. I believe Porsche chose the 2 cycle test for the Taycan. So, take those numbers and add 30% and that’s what the car tested at in the 2-cycle. As far as I know Tesla tends to use the 5-cycle approach where no derating factor is used. I also think I read somewhere the EPA recently modified the derating factor to 80%.