Nissan 300zx tt fuel consumption Fuel Economy of 1984 Nissan 300ZX Fuel economy of the 1984 Nissan 300ZX. 1984 to present Buyer's Guide to Fuel Efficient Cars Turbo, Regular Gasoline: 17: MPG: 15: 20: combined city/hwy 1990... Source Source Source Source Source Source Source Source Source Source Read Also: Nissan 300zx non turbo fuel consumption Nissan 300zx z32 fuel consumption 1984 Nissan 300zx fuel economy Nissan 300zx twin turbo fuel consumption 1984 Nissan 300zx turbo mpg 1984 Nissan 300zx mpg