The popular gasoline RON95 fell 2.17% to VND23,020 ($0.95) per liter.
Biofuel E5 RON92 dropped 2.60% to VND21,690.
Diesel went down 2.87% to VND20,280.
Starting this week the government will adjust retail fuel prices every Thursday instead of every 10 days as before.
Global fuel prices dropped slightly in the last 10 days due to a decline in demand caused by economic recessions and rising U.S. crude oil inventory.
RON92 fell 2.9% to $91.09 per barrel while RON95 dropped 2% to $97.26. Diesel declined 2.4% to $105.15.