Norway's total sales of petroleum products fell 12% to 635 million liters in August compared to the same month last year, according to Statistics Norway on Tuesday.
For gasoline sales, the statistics office said the volume increased by 2 million liters.
Sales of diesel amounted to 255 million liters - a fall of 6 million liters compared to August last year.
The country's statistics authority has produced data collated from the Norwegian Ministry of Trade, the Norwegian Petroleum Institute and oil companies since 1973.
By Murat Temizer