The expansion was driven by domestic demand, while trade flows were a drag on growth. On the production side, industry and services activity expanded, while agriculture contracted.
Compared with the same quarter a year earlier, the economy expanded 1.5 percent after growing 1.2 percent in the previous period and beating market consensus of 1.4 percent. It was the strongest pace of expansion since the second quarter of 2011.
Italy's government forecasts 2017 growth of 1.1 percent, up from the 0.9 percent advance seen last year.