The fuel, a mixture of 95 percent A92 petrol and 5 percent bio-ethanolproduced from cassava, tobacco and sugar cane, is now available at 20filling stations in Hanoi , HCM City , southern Ba Ria-Vung Tauprovince and northern Hai Phong and Hai Duong provinces.
However, demand is limited.
At Hanoi-based Thai Thinh filling station, there were typically longqueues of drivers waiting for A92 petrol on August 2, but few callersfor E5.
Nguyen Van Duc, a petrol pump attendant, said fewmotorist wanted E5 petrol, even though it was cheaper than other kindsof fuel.
E5 costs 15,500 VND (0.8 USD) per litre, while regular A92 costs about 16,000 VND (8.4 USD) per litre.
"Many people do not know about this kind of petrol, while those thatare familiar with it are hesitant to change their behaviour and are notsure about quality," Duc said.
However, he said the numberof motorists using E5 had gradually increased partly because it wascheaper but also because it was "cleaner and safer."
He said motorists should be made fully aware of E5's benefits.
"I didn't know that E5 was already on sale," Tran Hoang Nam , a motorist from Hai Ba Trung district, said.
"I have no idea if the fuel is as good as regular petrol, so I will wait until it becomes more popular," he said.
Nguyen Xuan Son, director general of Viet Nam Petrol Oil Corporation,said E5 had been thoroughly tested to ensure it was suitable for allvehicles.
E5 petrol was launched as part of the Government's biofuel development master plan (up to 2015).
E5 petrol will next go on sale at three stations in central Da Nangcity, three in central Thua Thien-Hue province and five in the MekongDelta's Can Tho city.
It will be sold at more than 4,000 stations by the end of 2012./.