F1 Championship leaders
Drivers’ Championship
| # | Grand Prix | Leader | Lead |
|---|---|---|---|
| 1 | Argentina | (BRA) Emerson Fittipaldi | 3 |
| 2 | Brazil | (BRA) Emerson Fittipaldi | 6 |
| 3 | South Africa | (BRA) Emerson Fittipaldi | 3 |
| 4 | Spain | (BRA) Emerson Fittipaldi | 3 |
| 5 | Monaco | (BRA) Emerson Fittipaldi | 5 |
| 6 | Belgium | (AUT) Niki Lauda | 2 |
| 7 | Sweden | (AUT) Niki Lauda | 10 |
| 8 | Netherlands | (AUT) Niki Lauda | 13 |
| 9 | France | (AUT) Niki Lauda | 22 |
| 10 | Britain | (AUT) Niki Lauda | 14 |
| 11 | Germany | (AUT) Niki Lauda | 17 |
| 12 | Austria | (AUT) Niki Lauda | 17.5 |
| 13 | Italy | (AUT) Niki Lauda | 16.5 |
| 14 | USA | (AUT) Niki Lauda | 19.5 |
- First time as championship leader
- No driver led the championship for the first time in 1975
- Last time as championship leader
- Emerson Fittipaldi
- Last time as championship leader by a…
- Brazilian driver until 1980
Constructors’ Championship
| # | Grand Prix | Leader | Lead |
|---|---|---|---|
| 1 | Argentina | McLaren-Ford Cosworth | 3 |
| 2 | Brazil | McLaren-Ford Cosworth | 2 |
| 3 | South Africa | Brabham-Ford Cosworth | 3 |
| 4 | Spain | Brabham-Ford Cosworth | 0.5 |
| 5 | Monaco | McLaren-Ford Cosworth | 1.5 |
| 6 | Belgium | Brabham-Ford Cosworth | 2.5 |
| 7 | Sweden | Ferrari | 0 |
| 8 | Netherlands | Ferrari | 5 |
| 9 | France | Ferrari | 14 |
| 10 | Britain | Ferrari | 8 |
| 11 | Germany | Ferrari | 3 |
| 12 | Austria | Ferrari | 3.5 |
| 13 | Italy | Ferrari | 9.5 |
| 14 | USA | Ferrari | 18.5 |
- First time as championship leader
- No constructor led the championship for the first time in 1975
- Last time as championship leader
- No constructor led the championship for the last time in 1975
- First time as championship leader since…
- 1970 for Brabham