It seems the German carmaker was a little conservative with its earlier prediction of 2.7 seconds, if it wasn’t ‘sandbagging’ for the opposition, that is.
An even more impressive figure is the zero to 200km/h time; dealt with in just 7.2 seconds.
Still not enough? Taking the Weissach package-equipped 918 Spyder from rest to 186 MPH (298km/h) takes 19.9 seconds.
At this point – and only this point - the Porsche may see the McLaren P1 supercar sailing past, as it only requires 16.5 seconds to reach the same speed.
The 918 Spyder has already lapped the Nurburgring in a blistering 6m57s, laying claim to the 'production-car' lap record.
"We have used all options available up to now to ‘electrify’ the 918 Spyder, working right up to the last minute to do so," Porsche’s Dr Frank-Steffen Walliser said.
As a plug-in hybrid, the 918 Spyder can also be run on battery power alone for up to 30km with an earlier predicted 0-100km/h time in this mode of “less than 7.0 seconds”.
The German carmaker may have been a little conservative here too, with a real 0-100km/h time of 6.1 seconds with the Weissach pack and 6.2 seconds without it.
The Weissach Package features special colours and the roof, rear wings and rear-view mirrors are all made from visible carbon fibre.
Interior features include Alcantara instead of leather, six-point racing harnesses for passenger and driver and more carbon fibre instead if aluminium.
The Weissach also features lightweight magnesium wheels which help to lower the overall weight by 35Kg.
Porsche claim around 50 percent of its 918 Spyder customers have added the Weissach Package.
Earlier this year, Porsche confirmed €645,000/US$845,000 (approx. AU$791,000) starting prices for the 918 Spyder, significantly undercutting the £866,000 (AU$1.25 million) P1.