[4] The inaugural WTCC Race of Portugal was held in July 2007 at the Circuito da Boavista street course in Porto.

The Boavista circuit had previously hosted the Formula One Portuguese Grand Prix in 1958 and 1960, and was revived as a historic racing venue in 2005.

[16] In 2017 the event was the first in the World Touring Car Championship to feature a joker lap,[17] an alternative route constructed at the final corner of the circuit through which drivers were required to drive once per race.

[18] An incident in the practice session for that year's event, in which driver Tom Coronel collided with an emergency vehicle down an escape road, prompted an investigation by the championship's governing body, the FIA.

[3] The first race of 2018 saw a violent first-lap collision between Mehdi Bennani and Robert Huff block the entirety of the track, causing a delay of two hours while repair work to the cars and track-side barriers was undertaken.