McLaren P1 vs Porsche 918 Spyder

On power there is almost nothing in it: 903 hp against 887 hp. Power-to-weight tells the more useful story: 606 against 530 hp per tonne, which puts the McLaren P1 ahead on the figure that actually decides how a car feels. Flat out the McLaren P1 goes further, 217 mph against 214. Off the line the Porsche 918 Spyder is quicker, 2.50 s to 60 mph against 2.70. At launch the Porsche 918 Spyder was the cheaper of the two, $845,000 against $1,150,000.