Marcus Ulf Johan "Bosse" Grönholm is a Finnish former rally and rallycross driver, being part of a family of the Swedish-speaking population of Finland lineage. His son, Niclas Grönholm, is an upcoming FIA World Rallycross Championship driver. Grönholm's nicknames are either "Bosse" or "Magic Marcus". Grönholm is one of the most successful WRC drivers of all time, ranking third in rally wins (30), and winning two championships, in 2000 and 2002. After Peugeot withdrew from the World Rally Championship, Grönholm moved to Ford for the 2006 season and placed second in the drivers' world championship, losing out to Sébastien Loeb by one point. The next year he again placed second, four points behind Loeb. He and his co-driver Timo Rautiainen retired from rallying after the 2007 season but returned to the championship in 2009 driving a private Subaru for a short period of time, and in the 2019 World Rally Championship where he competed in a Toyota Gazoo Racing WRT-maintained Toyota Yaris under the GRX Team banner.

The Toyota Yaris WRC is a World Rally Car designed by Toyota Gazoo Racing WRT to compete in the World Rally Championship. The car is based on the Vitz-based XP130 Toyota Yaris, and is the first car Toyota have competed with in the WRC since withdrawing from the championship at the end of the 1999 season to focus on their Le Mans Prototype and Formula One programmes. The car was driven by Sébastien Ogier, Elfyn Evans, Ott Tänak, Kalle Rovanperä and Takamoto Katsuta.