The retailer hailed an "excellent performance" from its new UK stores in the three months to 28 May. It also highlighted growth in fresh prepared foods and meat, fish and poultry, with sales of its Finest range up by almost 10% on a like-for-like basis.
Consumers were filling up petrol tanks at the expense of grocery shopping, the retailer said.
Total sales across the group were up 6.7% excluding petrol, with Asia again a key driver of growth.
"Uncertainties remain but with early encouraging signs of better performance emerging in both the UK and the US, I am confident that this will provide the platform for another year of growth," said Tesco chief executive Philip Clarke.