A standard NHRA Top Fuel elimination field contains 16 dragsters.
The 16-car format creates a straightforward single-elimination tournament. Each opening-round winner advances to the quarterfinals, then the semifinals, and finally the championship round. Four rounds are therefore required to determine an event winner: 16 cars become eight, then four, then two, then one.
Top Fuel is NHRA’s premier straight-line class for nitro-burning dragsters. These long, open-wheel machines use supercharged engines fueled primarily by nitromethane and are built for extraordinary acceleration over the quarter-mile. Qualifying determines the 16 places and seeds the elimination ladder, so a driver must first earn a spot before racing for the event victory.
The word “standard” matters. An event may have fewer than 16 entrants, and special formats such as four-wide racing alter how rounds appear to spectators. Those variations do not change the conventional Top Fuel elimination bracket, which is based on 16 qualified competitors.