Six people have been killed and at least 10 others have been injured after a rally car lost control and crashed into spectators at an event in Spain.

Among those killed are two pregnant women and an eight-year-old child, after the car left the track and veered into the crowd at the high-speed rallying event in Carral, which is located in the Galicia area of the country.

The incident happened at around 8pm local time, leaving six dead and a reported eight others in a critical condition, according to The Mirror.

A video captures the incident unfold as the Peugeot 206 XS car loses control on a bend and careers into helpless onlookers.

Four adults and four children are reported to be in a 'serious' condition while up to 12 others are reported to have been injured in the crash.