The 1990 480 km of Spa was the fourth round of the 1990 World Sportscar Championship season, taking place at Circuit de Spa-Francorchamps, Belgium. It took place on June 3, 1990.

The Mercedes-Benz C11 is a Group C prototype race car introduced for the 1990 World Sports-Prototype Championship. Built by Sauber as a successor to the Sauber C9, the C11 used the same Mercedes-Benz M119 5.0L twin turbo V8. It was the first time that Mercedes-Benz chose to put their name on the car, instead of simply using Sauber.