The automotive industry designs, develops, manufactures, markets, and sells motor vehicles, and is one of the world’s most important economic sectors by revenue.

The term automotive industry usually does not include industries dedicated to automobiles after delivery to the customer, such as repair shops and motor fuel filling stations.
In 2007, worldwide production reached a peak of 73.3 million new motor vehicles. In 2009, production dropped 13.5 percent to 61 million. Sales in the U.S. dropped 21.2 percent to 10.4 million units, sales in the European Union (supported by scrapping incentives in many markets) dropped 1.3 percent to 14.1 million units. China became the world’s largest motor-vehicle market, by both sales and production. Sales in China rose 45 percent in 2009 to 13.6 million units

About 250 million vehicles are in use in the United States. Around the world, there were about 806 million cars and light trucks on the road in 2007, consuming over 260 billion gallons of gasoline and diesel fuel yearly. In the opinion of some, urban transport systems based around the car have proved unsustainable, consuming excessive energy, affecting the health of populations, and delivering a declining level of service despite increasing investments. Many of these negative impacts fall disproportionately on those social groups who are also least likely to own and drive cars. The sustainable transport movement focuses on solutions to these problems.

The Detroit branch of Boston Consulting Group predicts that, by 2014, one-third of world demand will be in the four BRIC markets (Brazil, Russia, India and China). Other potentially powerful automotive markets are Iran and Indonesia

The first practical automobile with a petrol engine was built by Karl Benz in 1885 in Mannheim, Germany. Benz was granted a patent for his automobile on 29 January 1886, and began the first production of automobiles in 1888, after Bertha Benz, his wife, had proved with the first long-distance trip in August 1888 - from Mannheim to Pforzheim and back - that the horseless coach was absolutely suitable for daily use. Since 2008 a Bertha Benz Memorial Route commemorates this event.

Soon after, Gottlieb Daimler and Wilhelm Maybach in Stuttgart in 1889 designed a vehicle from scratch to be an automobile, rather than a horse-drawn carriage fitted with an engine. They also are usually credited as inventors of the first motorcycle in 1886, but Italy’s Enrico Bernardi, of the University of Padua, in 1882, patented a 0.024 horsepower (17.9 W) 122 cc (7.4 cu in) one-cylinder petrol motor, fitting it into his son’s tricycle, making it at least a candidate for the first automobile, and first motorcycle;. Bernardi enlarged the tricycle in 1892 to carry two adults