At present, the Train-18 with all modern facilities for a comfortable journey runs at a maximum speed of 160 kmph between Delhi and Varanasi.
Critics have attacked BJP, saying the move is aimed at gaining political mileage in UP ahead of the Lok Sabha elections.
While travelling from Delhi to Varanasi on Sunday, the train was delayed by 1.25 hours. On its return journey, it was delayed by 1.48 hours, officials said.
The Union Minister said the modern coach factory in Rae Bareli, which is the Lok Sabha constituency of his mother Sonia Gandhi, is a live example of how Congress makes empty promises.
"Vande Bharat Express left Delhi for Varanasi today morning on its first commercial run. Tickets sold out for the next two weeks already. Get yours today!" tweeted Railway Minister Piyush Goyal.
Train 18, as it was formerly called, broke down about 194 km away from Delhi and 18 km away from Tundla railway station in Uttar Pradesh.
The train was ultimately late by more than six hours due to a mechanical fault and reached the destination by 1 pm on Saturday.
Once India's fastest, the Gatimaan Express, which runs between Delhi and Agra with a maximum speed of 160 kmph and an average of 112 kmph, has now receded to the second place.
The semi-high speed train was returning from Varanasi after it was flagged-off by Prime Minister Narendra Modi at New Delhi railway station on Friday.
The price of a ticket between Kanpur and Varanasi (319 km) will be Rs 1,020 and Rs 1,815 for CC and EC classes respectively.
Train 18 has two classes of tickets -- executive class and chair car -- and will have differently priced meals.
The train has two classes of tickets -- executive class and chair car -- and will have differently priced meals, the sources said.
The decision to double the Train 18 production was taken by the Railway Board after the first rake rolled out by ICF, cleared all the mandatory safety and speed tests.
But passengers travelling the last leg on the route of the semi-high speed train -- Allahabad to Varanasi -- will have the choice of opting out of the meals provided by the Indian Railways.
No suspect was found. Earlier, stones were pelted on the train on December 20 during a trial run between Delhi and Agra.