New-car registrations in Spain increased 8 percent in June to 142,376 despite one fewer selling day compared with June 2017.
Sales to companies rose 13 percent to 41,979, while sales to rental companies grew 14 percent to 39,020. Private demand was weaker, with a 1.6 percent increase to 61,377 units.
German Lopez, president of the importer association Aniacam, said in a release that he had hoped for "higher growth in private-customer sales, as June is one of the best months of the year for that channel."
The sales share for diesel was down in June to 35.5 percent from 47.6 percent in the same month of 2017, although slightly higher than the 35.3 percent in May.
Gasoline cars took 58 percent of the market, more than 10 percentage points higher than in June 2017 but a full percentage point lower than in May. The hybrid and battery electric share rose to 6.6 percent from 4.8 percent in June 2017.
Volkswagen took first place among brands with a 35 percent jump in sales. VW was led by strong performances from both the Polo and Golf hatchbacks as well as the Tiguan and T-Roc SUVs. Meanwhile, VW's Spanish sister brand, Seat posted a 14 percent increase.
Jeep nearly doubled sales -- up 96 percent -- boosted by its new Compass compact SUV.
Other winners included Peugeot, with an 11 percent gain; Citroen with a 23 percent increase; Kia was up 17 percent; Toyota rose 14 percent; and Dacia grew 20 percent. Fiat brand sales were up about 5 percent.
• Download PDF, above right, for Spanish sales by automaker and brand
Some mass-market brands suffered declines: Ford's sales fell 22 percent, Nissan’s dipped 11 percent and Renault’s slipped 10 percent; Opel's registrations were down 7 percent.
German premium brands reported positive results. Audi's registrations jumped 23 percent, Mercedes-Benz rose 14 percent and BMW made a 4 percent gain.
The first half of 2018 saw a 10 percent increase in registrations to 734,649 units.
Raul Morales, director of communication at the dealer association FACONAUTO, said in a release that "thanks to the positive first half, we now estimate a 7 percent increase in sales in 2018." That means more than 1.32 million units, compared with the 1.23 million in 2017.
Morales, however, warned about "uncertainty about the impact on registrations" of the new Worldwide harmonized Light vehicles Test Procedure (WLTP) homologation rules, scheduled to go into effect Sept. 1.