I haven't checked in a while but I see 310km at 90% today for my sr plus bought in August this year. This should be what I see at 80%. I have found my actual usable range to be much lower than the raged range and even went into the SC. They said I have some degradation, around 6% but nothing they will do anything about.
All in all, I have extrapolated that my actual range at 100% is about 200-220km, which is disappointing (and getting worse in the colder weather) and pretty far off from the 386 or 402 as they are advertising now.