The Matra-Simca MS660 is a Group 6 prototype race car introduced in 1969 for the International Championship for Makes.

[2] The team entered three cars for the 24 Hours of Le Mans with Jean-Pierre Beltoise and Henri Pescarolo in the MS660, Jack Brabham/Francois Cevert and Patrick Depailler/Jean-Pierre Jabouille/Tim Schenken were both in the older Matra-Simca MS650 but all three cars retired with engine failure.

As a result of the accident, Beltoise's international racing licence was suspended for some time.

The team didn't enter another race until the 24 Hours of Le Mans with Beltoise and Chris Amon but it retired with a fuel system failure.

[4] The team entered the 24 Hours of Le Mans with Jabouille and David Hobbs with an updated version of the MS660 known as the MS660C but it retired with a transmission issue.