In September 2017, the Consumer Prices Index (CPI) edged down by 0.2% over a month, after a rebound of 0.5% in August. This drop mainly came from a seasonal downturn in services prices and, in a lesser extent, from a slight drop in food prices. Energy prices slowed down a little. Contrariwise, manufactured product prices accelerated.

Seasonally adjusted, consumer prices accelerated by 0.2%, as in August.

Year on year, consumer prices gathered pace for the second consecutive month: +1.0% after +0.9% in August and +0.7% in July. This rise resulted from an acceleration in energy prices and food prices and a lesser drop in manufactured product prices. On the other hand, services prices slowed down again, due to a stronger fall in airfares and in communication services.