The McLaren 675LT is one of the most impressive new supercars of 2016. Its hardcore track-ready nature and massive power mean its ability to lap a circuit is nearly unmatched. That is, of course, no longer true if you bring an even faster McLaren to the circuit. Like the P1 GTR.
The 675LT is powered by a mid-mounted 3.8-liter twin-turbo V8 that makes 666 horsepower and 516 lb.-ft. of torque. Combined with a lightweight carbon tub and functional downforce, the Long-Tail is a solid choice for the track-day enthusiasts looking to hunt down other track specials like the GT3 RS and 458 Speciale, and look great doing it.
The P1 GTR, on the other hand, is McLaren's range-topping 986-horsepower hybrid track monster. It's not street legal, and uses a huge splitter and wing to make an absurd amount of downforce.
brought the two British supercars together at Anglesey circuit in the U.K. to compare just how much faster a track-only car is against a track-ready road car. Obviously the GTR is quicker, but it's the time difference that blow us away. The P1's able to cut more than four seconds off the 675LT's lap time, and on a race track, that's an eternity. Watch for yourself.