They are mighty on two wheels, but what about going backwards on four? marcmarquez93 and alexmarquez73 compete against the clock in two Audi RS 6 Avant performance models by Audi exclusive. Check out audispain for more. #Audi #VorsprungDurchTechnik #RS6 #AudixMárquez —— Audi RS 6 Avant performance: Fuel consumption combined in l/100 km: 12.7–12.2; CO₂ emissions combined in g/km: 289–277. CO₂ class: G. Closed circuit, professional driver. Do not attempt.