Tata Nano is a rear-engined, four-passenger city car built by Tata Motors, aimed primarily at the Indian market. The car has a fuel efficiency of around 26 kilometres per litre (73 mpg_-imp; 61 mpg_-US) on the highway and around 22 kilometres per litre (62 mpg_-imp; 52 mpg_-US) in the city.^[4] It was first presented at the 9th annual Auto Expo on January 10, 2008, at Pragati Maidan in New Delhi, India.^[5] The Nano had its commercial launch on March 23, 2009 and a booking period from April 9 to April 25, generating more than 200,000 bookings for the car.^[6][7] The cars started to be delivered to customers after July 17 2009,^[8] with a starting price of Rs 100,000, which is approximately equal to UK£1,360 or US$2,160 as of December 2009^[update]. This is cheaper than the Maruti 800, its main competitor and next cheapest Indian car priced at Rs 184,641 ($3,988 U.S.).^[9][10][11] Tata had sought to produce the least expensive production car in the world^[12] — aiming for a starting price of Rs 100,000 (approximately US$2,000 as of June 2009^[update]).^[13][14]