The Office is due to publish a breakdown of the first-quarter GDP figures on May 27.
Euro Zone First-Quarter GDP Rebounds More than Expected
Euro zone economic growth rebounded more strongly than expected in the first quarter against the previous three months, mainly thanks to a strong performance by Germany, data showed.
Gross domestic product in the 15 countries using the euro rose 0.7 percent in the January-March period against the previous quarter for a 2.2 percent year-on-year rise, the European Union statistics office estimated on Thursday.
That was a much stronger-than-expected rebound from 0.4 percent quarterly growth in the last three months of 2007.
Economists and the European Commission had forecast quarterly growth of 0.5 percent.
In annual terms, economists had expected a 1.9 percent rise, against 2.2 percent in the last three months of 2007.
But the Commission has said growth is likely to slow in the second quarter under the weight of tighter credit conditions, slowing world growth, a stronger euro and rising commodity prices and be 1.7 percent for 2008 against 2.6 in 2007.
France, the euro zone's second-biggest economy, was also above consensus with 0.6 percent growth.
Separately, Eurostat confirmed its earlier estimate that euro zone inflation in April slowed to 3.3 percent year-on-year from an all-time peak of 3.6 percent in March.
Monthly inflation in April was 0.3 percent, fuelled mainly by a 1 percent increase in energy prices and a 0.5 percent rise in the cost of food, alcohol and tobacco.
Year-on-year, energy costs surged 10.8 percent in April and food, alcohol and tobacco jumped 5.4 percent.
A measure the European Central Bank calls core inflation, which does not include unprocessed food and energy, came to 0.2 percent month-on-month and 2.4 percent year-on-year.
The ECB wants annual inflation to be just below 2 percent, but has kept interest rates unchanged at 4.0 percent since mid-2007 because it expects the inflation surge to be temporary and price growth to slow along with the economy.