The 2021 McLaren 720S is available as a 2-door, 2-seat coupe. Starting at $299,000, the 2021 McLaren 720S Base Coupe is powered by a 4.0LL , 8 -cylinder engine mated to an automatic transmission that returns an EPA estimated 15-mpg in the city and 22-mpg on the highway. The top of the line 2021McLaren720SPerformance Spider , priced at $ 327,130 , is powered by a 4.0LL , 8 - cylinder engine mated to an automatic transmission that returns an EPA estimated 15-mpg in the city and 22-mpg on the highway.