Mercedes-Benz (German pronunciation:) is a German automobile manufacturer, a multinational division of the German manufacturer Daimler AG. The brand is known for luxury automobiles, buses, coaches, and trucks. The headquarters of Mercedes-Benz is in Stuttgart, Baden-Württemberg, Germany.

The name first appeared in 1926 under Daimler-Benz, but traces its origins to Daimler-Motoren-Gesellschaft's 1901 Mercedes and to Karl Benz's 1886 Benz Patent-Motorwagen, which is widely regarded as the first gasoline powered automobile. Mercedes-Benz's slogan is "The Best or Nothing". Mercedes-Benz is one of the most recognized automotive brands worldwide.

Mercedes-Benz traces its origins to Karl Benz's creation of the first petrol-powered car, the Benz Patent Motorwagen, financed by Bertha Benz and patented in January 1886, and Gottlieb Daimler and engineer Wilhelm Maybach's conversion of a stagecoach by the addition of a petrol engine later that year. The Mercedes automobile was first marketed in 1901 by Daimler-Motoren-Gesellschaft. The first Mercedes-Benz brand name vehicles were produced in 1926, following the merger of Karl Benz's and Gottlieb Daimler's companies into the Daimler-Benz company. Throughout the 1930s, Mercedes-Benz produced the 770 model, a car that was popular during Germany's Nazi period. Adolf Hitler was known to have driven these cars during his time in power, with bulletproof windshields. Most of the surviving models have been sold at auctions to private buyers. One of them is currently on display at the War Museum in Ottawa, Ontario. Mercedes-Benz has introduced many technological and safety innovations that later became common in other vehicles. Mercedes-Benz is one of the best-known and established automotive brands in the world, and is also one of the world's oldest automotive brand still in existence today in 2015, having produced the first petrol-powered car.

For information relating to the famous three-pointed star, see under the title Daimler-Motoren-Gesellschaft including the merger into Daimler-Benz.

The two companies which were merged to form the Mercedes-Benz brand in 1926 had both already enjoyed success in the new sport of motor racing throughout their separate histories. A single Benz competed in the world's first motor race, the 1894 Paris–Rouen, where Émile Roger finished 14th in 10 hours 1 minute. Throughout its long history, the company has been involved in a range of motorsport activities, including sports car racing and rallying. On several occasions Mercedes-Benz has withdrawn completely from motorsport for a significant period, notably in the late 1930s, and after the 1955 Le Mans disaster, where a Mercedes-Benz 300 SLR rammed another car (An Austin-Healey), took off into the stands, and killed more than 80 spectators. Stirling Moss and co-driver Denis Jenkinson made history by winning the 1955 Mille Miglia road race in Italy during a record-breaking drive with an average speed of almost 98 mph in a Mercedes-Benz 300 SLR.

Mercedes-Benz has developed multi concept cars with alternative propulsion, such as hybrid-electric, fully electric, and fuel-cell powertrains. At the 2007 Frankfurt motor show, Mercedes-Benz showed seven hybrid models, including the F700 concept car, powered by a hybrid-electric drivetrain featuring the DiesOtto engine. In 2009, Mercedes-Benz displayed three BlueZERO concepts at the North American International Auto Show. Each car features a different powertrain - battery-electric, fuel-cell electric, and gasoline-electric hybrid. In the same year, Mercedes also showed the Vision S500 PHEV concept with a 19 miles (31 km) all-electric range and CO2 emissions of 74 grams/km in the New European Driving Cycle.

In the United States, Mercedes-Benz was assessed a record US$30.66 million fine for their decision to not meet the federal corporate average fuel economy standard in 2009.Certain Mercedes-Benz cars, including the S550 and all AMG models sold in the United States, also face an additional gas guzzler tax. However, newer AMG models fitted with the M157 engine will not be subject to the gas-guzzler tax, due to improved fuel economy, and newer models powered by the M276 and M278 engines will have better fuel economy. In 2008, Mercedes also had the worst CO2 average of all major European manufacturers, ranking 14th out of 14 manufacturers. Mercedes was also the worst manufacturer in 2007 and 2006 in terms of average CO2 levels, with 181 g and 188 g of CO2 emitted per km, respectively.