Businesses drove a 5.9 percent increase in Italy's new-car sales in July.
Registrations rose to 145,363, the country's transport ministry said on Tuesday.
Sales to companies, which include fleet sales and self-registrations by carmakers, jumped 26 percent and long and short term rental sales were up 8.7 percent, according to Italy's association of car importers, UNRAE.
Sales to private customers were down 1.8 percent.
"The fall in sales to private customers can be explained by the high number of self registrations in previous months, which are then sold by dealers as second hand cars; and with an increase of long term rentals to private customers" said Michele Crisci, president of UNRAE, in a statement.
Federauto, the Italian dealers' association, said the last three days of July saw 64,000 self-registrations, more than 44 percent of the month's total. Self-registrations by carmakers and dealers typically take place in the last days of each month.
Fiat Chrysler Automobiles' sales, the market leader, grew by 3.7 percent, helped by 27 percent increases by both Alfa Romeo and Jeep/Chrysler/Dodge.
Maserati's volume doubled sales and Fiat brand sales increased by just 0.2 percent.
Volkswagen Group, the top importer, saw its sales remain unchanged from July 2016 at 18,082 registrations. VW brand sales were down 3.9 percent.
Skoda's volume fell by 2.2 percent while Seat sales were flat.
Ford's sales rose 8.4 percent to make it Italy's No. 2 brand by volume after Fiat.
Peugeot brand sales jumped 31 percent while Citroen's volume grew by 23 percent, helped by the recently launched C3 which was the top-selling non-Italian brand car in the month.
Opel's registrations increased 9.8 percent. Renault sales fell 8.7 percent, while Dacia's volume increased 30 percent.
Among luxury brands, Audi registrations rose 5.4 percent while Mercedes-Benz gained 1.3 percent and BMW's volume fell by 19 percent.
Among Asian carmakers, Toyota sales jumped 33 percent and Nissan rose 19 percent. Hyundai brand was down 8.6 percent, while Kia gained 8.8 percent.
- Download PDF, above right, for Italy sales by brand for July and seven months.
In the first seven months, registrations rose 8.6 percent to 1.28 million.
UNRAE forecasts 6.8 percent growth in 2017 to 1.95 million and a further increase in 2018 to 1.96 million.