The Mark X GRMN (Gazoo Racing, tuned by the Meister of the Nürburgring) is a limited-production variant (100 units in 2015, 350 units in 2019) based on the 3.5 L model. It has a specific front and rear bumper design (shared with the GR Sport variant for 2019 model), CFRP roof which reduces the weight by approximately , 19-inch BBS wheels, sports seats and steering wheel, and piano black interior accents with ultra suede upholstery and red contrast stitching. Mechanical upgrades include uprated power output to for the 2015 model, 6-speed manual transmission with Torsen limited-slip differential, sport-tuned suspension, high-performance brakes, and additional chassis reinforcements, which include 252 additional chassis spot welds for greater rigidity, coupled with specific-tuned dampers and electric power steering.