McLaren
For the most part, the new 570GT is just a 570S Sport Series. If you're not driving it or living with it, you might have to look a little hard to find where the differences start.
McLaren
In the 570GT, there's extra storage room behind the seats and above the engine area. On top of that, the new storage area is completely lined with leather, giving the 570GT that added luxury that you might not usually get in a McLaren.
Between the normal front storage compartment that all McLarens come with and the new luggage area behind the occupants, the 570GT has a total of about 13 cubic feet of storage. Basically, it has more than double the amount of storage space than the 570S.
McLaren
To accommodate the extra storage space, the McLaren's engine cover and vents have been replaced with an opening glass window for easier access to luggage, or whatever you might be able to fit in that new, decently small, compartment.
McLaren
With the slight engine cover body panel change, McLaren added a slightly more defined but still pretty not-aggressive looking spoiler on the rear. Just something to make sure that no necessary downforce is lost, and so that the car can remain planted to the roads at high-speeds.
For those that find McLaren's standard sporty exhaust a bit too loud and or droney, a quieter exhaust comes standard on the 570GT, while the Sport Exhaust is available as an option. Pirelli performance tires with 'Pirelli Noise Canceling System' are also used on the 570GT to reduce tire noise at highway speed.
McLaren
What's probably my favorite change from the 570S, the 570GT comes standard with a transparent roof and provides for a more open-air, less claustrophobic feeling cabin.
McLaren
As for performance bits, McLaren says that the suspension and steering have been "fine-tuned to emphasize long-distance comfort."
They've basically played around with it just enough so that the car still has the enthusiastic bite and control from the 570S, but it's now a tad less stiff. The car also still uses McLaren's adaptive dampers which allow the driver to adjust the suspension using a toggle inside the car for normal, sport driving, or track use.
The 570GT maintains a top-speed of 204 MPH and a zero to 62 miles per hour time of 3.4 seconds. For the car that's supposed to be the tame one out of the bunch, that's pretty awesome.
At $198,950, the 570GT is a little more expensive than the 570S. If you're looking for just that much more luxury in a British super car, why not, right?