The Zonda HP Barchetta was unveiled at the 2017 Pebble Beach Concours d'Elegance as a present to the company's founder, Horacio Pagani for his 60th birthday as well as to commemorate the 18th anniversary of the Zonda. It has unique exterior design cues which makes it different from other Zondas produced with the most distinguishable features being the barchetta body style and rear wheel covers inspired by group C race cars, making it the first Pagani to ever use this styling. It also has a rear spoiler, air intakes and rear lights taken from the 760 series cars. Power comes courtesy of the 7.3 L (445 cu in) Mercedes-AMG V12 engine rated at 800 PS (588 kW; 789 hp) and 850 N⋅m (627 lb⋅ft) of torque making it the most powerful road legal Zonda ever produced. It borrows its seats and suspension from the Huayra BC along with its power output being identical to the BC with the only difference being that the BC has a Bi-turbo engine while the HP Barchetta is naturally aspirated. The wheels of the car also have different colour inlays with the wheels at the left having gold and the wheels at the right having blue inlays. Production is limited to just 3 units with one unit retained for Horacio Pagani's personal collection.[27] The Zonda HP Barchetta marks an end to the Zonda's production run.