The pan-European STOXX 600 (.STOXX) rose 0.8%, while France's CAC 40 (.FCHI) added 1.3%.
Data on Wednesday showed euro zone business activity contracted less than initially thought, suggesting the bloc's recession may not be as deep as feared.
Further, preliminary data showed inflation in France slipped in December from a record high in the previous month, tracking a slew of encouraging data from improving euro zone manufacturing numbers to a slowdown in Germany's inflation.
The STOXX 600 index has risen 3% in the first three trading days of the new year, helped by strong economic data, easing of natural gas futures and hopes of a post-COVID recovery in China despite surging cases.
Meanwhile, data showed fresh food prices at British supermarkets in early December were 15.0% higher than a year earlier, weighing on UK sentiment.