2010s in motorsport

The 2010s saw several notable changes in motorsport.

North America

The United States Grand Prix returns after a four year hiatus. Its new venue is Circuit of the Americas.
The Rolex Sports Car Series and American Le Mans Series merge in 2014 to form the IMSA SportsCar Championship.
The IndyCar event at Watkins Glen International is held on-and-off before being ultimately dropped in 2018.
The IndyCar Series abandons its event at Sonoma Raceway after 15 years for an event at WeatherTech Raceway Laguna Seca. It is their first event there since 2004.

drag reduction system is introduced in Formula One
The Austrian Grand Prix returns in 2014 after 11 years
The French Grand Prix returns in 2018 after 10 years. It is held at Circuit Paul Ricard instead of the previous Magny-Cours.
The Russian Grand Prix debuts

The Indian Grand Prix is held for three years.
The Korean Grand Prix is held for four years.
The Malaysian Grand Prix is dropped in 2018 after almost 20 years.
The Acura NSX returns in 2016 after a hiatus of over a decade
The Toyota Supra returns in 2019 after a hiatus of almost 20 years.
The Indy Japan 300 is dropped from the IndyCar Series calendar in 2012. It is the final event outside North America. Due to an earthquake damaging the oval, the final event is held on the motorcycle circuit.