The French economy flatlined in the first quarter as households reduced their consumption due to rising inflation and the war in Ukraine, the national statistics agency said Friday.

The zero-growth result was weaker than the INSEE agency's pre-war forecast of a 0.3 percent expansion, underlying the economic difficulties faced across Europe.

The French annual inflation rate also accelerated to 4.8 percent in April, up from 4.5 percent the month before, INSEE said in a separate statement.

"Gross domestic product is at a standstill ... it bears the mark of the two combined external shocks (Covid and the Omicron variant in January, then the war in Ukraine that strengthened inflation)," INSEE economist Julien Pouget wrote on Twitter.

The figure puts an end to France's strong economic rebound from the Covid-19 pandemic and poses a challenge to President Emmanuel Macron, who was re-elected last weekend.

Economic growth had been clocked at 0.8 percent in the last quarter of 2021 and 3.0 percent in the third.

European economies have been badly affected this year by supply problems linked first to the pandemic, then the war in Ukraine -- as well as sanctions imposed on Russia following its February 24 invasion of its neighbour.

Figures also released Friday showed that the eurozone's GDP growth slowed to 0.2 percent in the first quarter, with a Germany eking out a similar gain as it avoided a second consecutive quarterly contraction.

Italy's output fell 0.2 percent while Spain's growth slumped to 0.3 percent in January-March.

France's poor first quarter economic performance puts an end to France's strong economic rebound from the pandemic and poses a challenge to President Emmanuel Macron, who was re-elected last weekend
France's poor first quarter economic performance puts an end to France's strong economic rebound from the pandemic and poses a challenge to President Emmanuel Macron, who was re-elected last weekend AFP / JOEL SAGET

Fears that Moscow could cut Europe's largest economies off from its fossil fuels have again surged after it ended gas deliveries to Poland and Bulgaria this week.

Many consumers in France and its neighbours say they are cutting back on their purchasing as the cost of fuel reaches record levels.

INSEE said there had been a 1.3 percent fall in French consumer spending in the first quarter -- falling short of economists' expectations.

"The motor of the French economy has come to a halt, just when we had barely reached levels from before the health crisis," said Allianz economist Ana Boata.

The French government implemented a cut of 15 euro cents ($0.16) per litre at the pump for vehicle owners in April, which INSEE said would have an impact on the headline inflation rate.

The government has also capped electricity and gas prices this year, with total aid estimated at around 25 billion euros ($26 billion).

Paris is expected to pass further support for consumers in the next few months with parliamentary elections looming in June.

Over the full year, the Bank of France still predicts expansion of 2.8 percent, around the same level as the International Monetary Fund.

Boata highlighted that France boasts "factors of resilience" like a strong construction sector, still-growing business investment borne up by spending on digitalisation, rising industrial output and reinforced foreign trade.

The country also produces most of its electricity from nuclear power, meaning it is more insulated than its European neighbours against the huge increases in the price of fossil fuels in recent months.

Eyes across the continent will be turned on the European Central Bank for possible inflation-fighting moves later this year.

Although its chief Christine Lagarde has said that raising interest rates would not bring energy prices down, some observers predict the Frankfurt institution will be forced to act in the coming months.