The 1980 Canadian Grand Prix was a Formula One motor race held on 28 September 1980, at the Circuit Île Notre-Dame in Montreal, Quebec, Canada.

Piquet was forced to restart in his more fragile qualifying car, which ultimately led to his retirement and the end of the title battle.

Alfa Romeo replaced him with someone younger and Andrea de Cesaris made his Grand Prix debut, as did teenage New Zealander Mike Thackwell.

At the start Jones outlaunched Piquet but the pair refused to compromise at the first turn and the two touched,[4][5] triggering a multi-car pile-up.

At the restart Jones led before a storming Piquet took the lead until his qualifying specification Cosworth DFV inevitably failed.

The final point was claimed by Héctor Rebaque in his Brabham BT49 as Jacques Laffite ran out of fuel in his Ligier JS11/15 in the closing stages.