Initially there were VIN checks to see if specific 75Ds were eligible for uncorking but later all 75Ds were eligible for uncorking as were 60Ds that were upgraded to 75Ds.
The official 0-60 times after uncorking is 4.2 seconds. There were people that claimed they’d measured quicker times, one was 3.9 seconds. Tesla claims 4.2 seconds. I believe that is with their Motor Trend bogus 1 foot rollout measurement though, so the real 0-60 time is somewhere between 3.9 and 4.4 seconds.
It feels very quick. Overall it’s a joy to drive.
Check to see if the car you are considering has been uncorked, if so it’s the 4.2 second car.
The range for the S75D with 19” rims is officially 259 miles. There will be some minor loss of range with use. The car with 21” rims will have slightly less range.
That car with the lower range may have been a 60D that has been upgraded. It is the same battery, there was a just software limit on the 60Ds. If it was a 60D the listing may be quoting the original range before the upgrade to the 75D. On the good side, if it was a 60D the battery would have not have been charged to 100% while it was a 60D. 100% charges are a little harder on the battery.