Sixty percent of passenger cars produced in 2008 will use natural gas as fuel or will be dual-fuel, and the remaining 40 percent will run on regular gasoline (2008). Some problems faced by the industry are slow deliveries of cars, lack of after sales services and low quality in the production of some cars. Car production in Iran has increased 445% between 1998 and 2008. In July 2013, sanctions imposed by the USA prevented Iranian companies from importing the vehicle parts upon which domestic cars rely; this caused Iran to cede its place to Turkey as the region’s top vehicle manufacturer. Because of sanctions on spare parts by France's Peugeot and Renault, car production in Iran dropped by as much as 40% in 2012 before recovering somewhat in 2014 following the Geneva interim agreement. In 2014, Iranian car companies produced 1,090,846 cars and commercial vehicles, of which 925,975 were cars and 164,871 were other vehicles.