Italian incentives helped boost June vehicle sales in Europe by 9.0 percent to 1.1 million units.
The Italian incentives - a goverment bonus for scrapping older cars - help Fiat, Italy, and small-car segments.
Last year, incentives in France helped France, Renault, PSA and small cars.
While France saw a decline of 30.7 percent in June, other major markets showed healthy growth. Italy was up 50.7 percent.
German sales increased 8.4 percent.
Analysts said buyers were pulling sales ahead from July, when new emissions taxes took effect.
Among the major six makers, only the Volkswagen and Fiat Groups rose in share.
The VW Group's 10.8 percent increase was spread over all four brands.
However, VW Group sales fell 2 percent in Germany. There, only Audi advanced (7 percent), largely because of the new A3 and A6 and continued strength of the A4 range.
VW outperformed the market in Great Britain, with a 12 percent increase.
Sales in Italy did not keep pace with the market, rising only 19 percent.
Fiat Group was up 64 percent in Italy, enough to increase Europewide sales by 25.1 percent.
General Motors sales were up only 3.5 percent in June.
Ford Motor Co. was ahead by 12.9 percent, with its Jaguar marque up 72.1 percent.