As you can see in the video above, when independently tested on the track, acceleration in the P85D is not as fast as Tesla claims. The laser-tested 0-60 time was an 3.5 seconds. That's unquestionably great, but not quite the insane 3.17 seconds that Tesla promises (others have been able to meet or exceed Tesla's promised figures). The results from CR's avoidance maneuver and braking tests were also superb. To stop from 60 miles per hour, from example, it took the Model S just 118 feet to come to a stop on dry pavement, and 129 ft on wet pavement. And all of this from an electric car that gets the equivalent of 87 miles per gallon.
Do those 0.33 seconds really matter? As the first public owner of a P85D said back in 2014, the new 'insane' mode is "night and day" different from the previous standard model and you can have a lot of fun testing it out (see this or this). But CR's results do seem to show that the official numbers from Tesla need to be taken with a grain of salt, something that is likely also true when we're talking about the 2.8 second 0-60 time in the even newer 'ludicrous mode.'