F1 Championship leaders
Drivers’ Championship
| No. | Grand Prix | Leader | Points | Lead |
|---|---|---|---|---|
| 1 |  Argentina |  Mario Andretti | 9 | 3 |
| 2 |  Brazil | Mario Andretti | 12 | 2 |
| 3 |  South Africa | Mario Andretti | 12 | 1 |
| 4 | USA West | Carlos Reutemann | 18 | 0 |
| 5 |  Monaco |  Patrick Depailler | 23 | 5 |
| 6 |  Belgium | Mario Andretti | 27 | 4 |
| 7 |  Spain | Mario Andretti | 36 | 10 |
| 8 |  Sweden | Mario Andretti | 36 | 6 |
| 9 | France | Mario Andretti | 45 | 9 |
| 10 |  Britain | Mario Andretti | 45 | 9 |
| 11 |  Germany | Mario Andretti | 54 | 18 |
| 12 |  Austria | Mario Andretti | 54 | 9 |
| 13 |  Netherlands | Mario Andretti | 63 | 12 |
| 14 |  Italy | Mario Andretti | 64 | 13 |
| 15 | USA | Mario Andretti | 64 | 13 |
| 16 |  Canada | Mario Andretti | 64 | 13 |
Constructors’ Championship
| No. | Grand Prix | Leader | Points | Lead |
|---|---|---|---|---|
| 1 | Argentina | Lotus-Ford Cosworth | 9 | 3 |
| 2 | Brazil | Lotus-Ford Cosworth | 12 | 2 |
| 3 | South Africa | Lotus-Ford Cosworth | 21 | 7 |
| 4 | USA West | Lotus-Ford Cosworth | 27 | 9 |
| 5 | Monaco | Lotus-Ford Cosworth | 27 | 3 |
| 6 | Belgium | Lotus-Ford Cosworth | 36 | 11 |
| 7 | Spain | Lotus-Ford Cosworth | 45 | 20 |
| 8 | Sweden | Lotus-Ford Cosworth | 49 | 18 |
| 9 | France | Lotus-Ford Cosworth | 58 | 24 |
| 10 | Britain | Lotus-Ford Cosworth | 58 | 18 |
| 11 | Germany | Lotus-Ford Cosworth | 67 | 27 |
| 12 | Austria | Lotus-Ford Cosworth | 76 | 36 |
| 13 | Netherlands | Lotus-Ford Cosworth | 85 | 41 |
| 14 | Italy | Lotus-Ford Cosworth | 86 | 33 |
| 15 | USA | Lotus-Ford Cosworth | 86 | 33 |
| 16 | Canada | Lotus-Ford Cosworth | 86 | 28 |