Stock car racing in the context of "Motorsport"

Motorsport or motor sport or motor sports are sporting events, competitions and related activities that primarily involve the use of automobiles, motorcycles, motorboats and powered aircraft. For each of these vehicle types, the more specific terms automobile sport, motorcycle sport, power boating and air sports may be used commonly, or officially by organisers and governing bodies.

Different manifestations of motorsport with their own objectives and specific rules are called disciplines. Examples include circuit racing, rallying and trials. Governing bodies, also called sanctioning bodies, often have general rules for each discipline, but allow supplementary rules to define the character of a particular competition, series or championship. Groups of these are often categorised informally, such as by vehicle type, surface type or propulsion method. Examples of categories within a discipline are formula racing, stock car racing, touring car racing, sports car racing, etc.

Sports car racing is a form of motorsport road racing that uses sports cars with two seats and enclosed wheels. The cars in question may be either purpose-built sports prototypes, which are the highest level in sports car racing; or grand tourers (GT cars) which, being based on road-going models, are considerably more common, but not as fast. Sports car races are often endurance races run over particularly long distances or large amounts of time (generally between 6 and 24 hours), resulting in an emphasis on reliability and efficiency of the car and its drivers over outright car performance or driver skills. The FIA World Endurance Championship and IMSA SportsCar Championship are some of the best-known sports car racing series, and so is the GT World Challenge. Sports car racing is one of the main types of circuit auto racing, alongside open-wheel racing (such as Formula One and Indycar), touring car racing (such as BTCC and V8 Supercars, which is based on 'saloon cars' as opposed to the 'exotics' seen in sports cars) and stock car racing (such as NASCAR).

A hybrid of the purism of open-wheelers and the familiarity of touring car racing, sports car racing is commonly associated with the annual 24 Hours of Le Mans endurance race. First run in 1923, Le Mans is one of the longest-running motor races. Well-known defunct sports car races include the Italian classics, the Targa Florio (1906–1977) and Mille Miglia (1927–1957), and the Mexican Carrera Panamericana (1950–1954). Most top-class sports car races focus more on endurance and strategy than pure speed or skills, and longer races usually involve complex pit strategies and regular driver changes. As a result, sports car racing is seen more as a team endeavour than an individual sport, with team managers such as John Wyer, Tom Walkinshaw, driver-turned-constructor Henri Pescarolo, Peter Sauber and Reinhold Joest becoming almost as famous as some of their drivers.

The National Association for Stock Car Auto Racing, LLC (NASCAR) is an American auto racing sanctioning and operating company that is best known for stock car racing. It is considered to be one of the top-ranked motorsports organizations in the world and is one of the largest spectator sports leagues in America. The privately owned company was founded by Bill France Sr. in 1948, and his son, Jim France, has been the CEO since August 2018. The company is headquartered in Daytona Beach, Florida. Each year, NASCAR sanctions over 1,500 races at over 100 tracks in 48 US states, as well as in Canada, Mexico, Brazil, and Europe.

NASCAR, and stock car racing as a whole, traces its roots back to moonshine runners during Prohibition, who grew to compete against each other in a show of pride. In 1935, Bill France Sr. established races in Daytona Beach, with the hope that people would come to watch races and that racers would race for him, as other organizers tended to fleece the winners of their payouts. This was a success, and the series was founded in 1948. Races were held in several divisions, which eventually morphed into what is the "ladder": the Cup Series at the top, the Xfinity Series second, and the Truck Series third, with smaller series spread out below. Chevrolet, Ford, and Toyota compete in each series.

The North American continent is the birthplace of several organized sports, such as basketball, charrería/rodeo, gridiron football, ice hockey, jaripeo/bull riding, lacrosse, ollamaliztl (ancient Mesoamerican sport), mixed martial arts (MMA), padel, pickleball, racquetball, ultimate ("ultimate frisbee"), and volleyball. The modern versions of baseball and softball, skateboarding, snowboarding, stock car racing, and surfing also developed in North America.

Sports leagues in North America use a mix of organizational structures. While common in other parts of the world, not all North American countries use the promotion-relegation (Pro-Rel) system for their association football/soccer leagues. Notably, Mexico's league has temporarily suspended its Pro-Rel system but is expected to being reinstated in the coming years. Leagues of other sports generally have a closed league using a franchise system.

Touring car racing is a form of motorsport racing featuring production-based cars that are modified for competition. The discipline emphasizes close racing, balanced performance, and manufacturer diversity, with cars that still resemble their road-going counterparts. Originating in Europe in the mid-20th century, touring car racing has since expanded globally through rule sets such as Group A, Super Touring, and the FIA TCR formula. Major championships include the British Touring Car Championship (BTCC), German Touring Car Masters (DTM), and Supercars Championship. It has both similarities to and significant differences from stock car racing, which is popular in the United States.

Modern touring car championships increasingly rely on Balance of Performance (BoP) and cost-control regulations to ensure close competition among manufacturers and private teams. The adoption of hybrid technology and the introduction of electric touring car series, such as the ETCR (now FIA E-Touring Car World Cup), mark the category’s adaptation to sustainability trends in motorsport. While the cars do not move as fast as those in formula or sports car races, their similarity both to one another and to fans' own vehicles makes for well-supported racing. The lesser use of aerodynamics means following cars have a much easier time passing than in open-wheel racing, and the more substantial bodies of the cars makes the subtle bumping and nudging for overtaking much more acceptable as part of racing.

An open-wheel car is a car with the wheels outside the car's main body, and usually having only one seat. Open-wheel cars contrast with street cars, sports cars, stock cars, and touring cars, which have their wheels below the body or inside fenders. Open-wheel cars are built both for road racing and oval track racing. Open-wheel cars licensed for use on public roads (street legal), such as the Ariel Atom, are uncommon, as they are often impractical for everyday use.