1999 Nissan 200sx mpg Fuel Economy of 1999 Nissan Sentra/200SX Fuel economy of the 1999 Nissan Sentra/200SX. 1984 to present Buyer's Guide to Fuel Efficient Cars and Trucks. Estimates of gas mileage, greenhouse gas... Source Source Source Source Source Source Source Source Source Source Read Also: 1984 Nissan 200sx mpg 1999 Nissan 240sx fuel economy 1999 200Sx nissan Nissan s15 fuel economy Nissan 200sx s15 fuel consumption Nissan primera 1999 fuel consumption