1971 World Sportscar Championship
The 1971 International Championship for Makes season was the 19th season of FIA World Sportscar Championship motor racing. It was open to Group 6 Sports Prototypes, Group 5 Sportscars, and Group 4 Special GT Cars and was contested over an eleven race series which ran from 10 January to 24 July 1971. Porsche won the championship, and the German manufacturer also won the International Cup for GT Cars.
Schedule
| Rnd | Race | Circuit or Location | Date |
| 1 |  1000km of Buenos Aires† | Autódromo Oscar Alfredo Gálvez | 10 January |
| 2 |  24 Hours of Daytona Beach | Daytona International Speedway | 30 January 31 January |
| 3 | 12 Hours of Sebring | Sebring International Raceway | 20 March |
| 4 |  BOAC 1000km† | Brands Hatch | 4 April |
| 5 |  Trofeo Filippo Caracciolo | Autodromo Nazionale Monza | 25 April |
| 6 |  1000km Spa | Circuit de Spa-Francorchamps | 9 May |
| 7 | Targa Florio | Circuito Piccolo delle Madonie | 16 May |
| 8 |  ADAC 1000km Nürburgring | Nürburgring | 30 May |
| 9 |  24 Hours of Le Mans | Circuit de la Sarthe | 12 June 13 June |
| 10 |  Austrian 1000km | Österreichring | 27 June |
| 11 | Watkins Glen 6 Hours | Watkins Glen International | 24 July |
† - Sports Prototypes and Sportscars only, GT class did not participate.
Season results
Races
| Rnd | Circuit | Outright winning team | GT winning team | Results |
| Rnd | Circuit | Outright winning drivers | GT winning drivers | Results |
| Rnd | Circuit | Outright winning car | GT winning car | Results |
| 1 | Buenos Aires | #30 John Wyer Automotive | None | Results |
| 1 | Buenos Aires |  Jo Siffert Derek Bell | Results | |
| 1 | Buenos Aires | Porsche 917K | Results | |
| 2 | Daytona | #2 John Wyer Automotive | #11 Owens Corning Fiberglass | Results |
| 2 | Daytona |  Pedro Rodriguez Jackie Oliver | Tony DeLorenzo Don Yenko | Results |
| 2 | Daytona | Porsche 917K | Chevrolet Corvette | Results |
| 3 | Sebring | #3 Martini Racing | #48 John Greenwood Racing | Results |
| 3 | Sebring | Vic Elford Gérard Larrousse | John Greenwood Dick Smothers | Results |
| 3 | Sebring | Porsche 917K | Chevrolet Corvette | Results |
| 4 | Brands Hatch | #54 Autodelta SpA | None | Results |
| 4 | Brands Hatch | Andrea de Adamich Henri Pescarolo | Results | |
| 4 | Brands Hatch | Alfa Romeo T33/3 | Results | |
| 5 | Monza | #2 John Wyer Automotive | #50 Kremer Racing | Results |
| 5 | Monza | Pedro Rodriguez Jackie Oliver | Erwin Kremer Günther Huber | Results |
| 5 | Monza | Porsche 917K | Porsche 911S | Results |
| 6 | Spa-Francorchamps | #21 John Wyer Automotive | #46 Kremer Racing | Results |
| 6 | Spa-Francorchamps | Pedro Rodriguez Jackie Oliver | Erwin Kremer Günther Huber | Results |
| 6 | Spa-Francorchamps | Porsche 917K | Porsche 911S | Results |
| 7 | Targa Florio | #5 Autodelta SpA | #42 Porsche Club Romand | Results |
| 7 | Targa Florio | Nino Vaccarella Toine Hezemans | Bernard Cheneviére Paul Keller | Results |
| 7 | Targa Florio | Alfa Romeo T33/3 | Porsche 911S | Results |
| 8 | Nürburgring | #3 Martini Racing | #82 Kremer Racing | Results |
| 8 | Nürburgring | Vic Elford Gérard Larrousse | Erwin Kremer Jürgen Neuhaus | Results |
| 8 | Nürburgring | Porsche 908/3 | Porsche 911S | Results |
| 9 | La Sarthe | #22 Martini Racing | #63 ASA Cachia Bundi | Results |
| 9 | La Sarthe | Helmut Marko Gijs van Lennep | Raymond Touroul André Anselme | Results |
| 9 | La Sarthe | Porsche 917K | Porsche 911S | Results |
| 10 | Österreichring | #16 John Wyer Automotive | #43 Peter Kersten | Results |
| 10 | Österreichring | Pedro Rodriguez Richard Attwood | Peter Kersten Clemens Schickentanz | Results |
| 10 | Österreichring | Porsche 917K | Porsche 911S | Results |
| 11 | Watkins Glen | #30 Autodelta SpA | #49 John Greenwood Racing | Results |
| 11 | Watkins Glen | Andrea de Adamich Ronnie Peterson | John Greenwood Robert R. Johnson | Results |
| 11 | Watkins Glen | Alfa Romeo T33/3 | Chevrolet Corvette | Results |
Championship results
International Championship for Makes
Championship points were awarded to the top 6 finishers in each race in the order of 9-6-4-3-2-1. Manufacturers were only given points for their highest finishing car and any other cars from that manufacturer were merely skipped in the points standings.All Sportscars, Sports Prototypes and GT cars were eligible for points towards the International Championship for Makes and the GT class also had their own separate award.
Cars participating in races that were not included in the Sportscar, Sports Prototype or GT classes were skipped when awarding points for the overall championship.
Only the best 8 points finishes counted towards the championship, with any other points earned not included in the total. Discarded points are shown within brackets.
| Pos | Manufacturer | Rd 1 | Rd 2 | Rd 3 | Rd 4 | Rd 5 | Rd 6 | Rd 7 | Rd 8 | Rd 9 | Rd 10 | Rd 11 | Total |
| 1 | Porsche | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 72 | |||
| 2 | Alfa Romeo | 4 | 6 | 9 | 4 | 4 | 9 | 6 | 9 | 51 | |||
| 3 | Ferrari | 2 | 6 | 1 | 6 | 1 | 4 | 3 | 3 | 26 | |||
| 4 | Lola | 1 | 4 | 5 | |||||||||
| 5 | Chevrolet | 3 | 2 | 5 |
International Cup for GT Cars
The GT class did not participate in Rounds 1 and 4. Only the best 7 finishes were counted towards the International Cup for GT Cars. Discarded points are shown within brackets.| Pos | Manufacturer | Rd 2 | Rd 3 | Rd 5 | Rd 6 | Rd 7 | Rd 8 | Rd 9 | Rd 10 | Rd 11 | Total |
| 1 | Porsche | 6 | 9 | 9 | 9 | 9 | 9 | 9 | 60 | ||
| 2 | Chevrolet | 9 | 9 | 1 | 9 | 28 | |||||
| 3 | Opel | 3 | 3 | ||||||||
| 4 | Alfa Romeo | 1 | 1 |
The cars
The following models contributed to the net points scores of their respective manufacturers.International Championship for Makes
- Porsche 917K & Porsche 908/3
- Alfa Romeo T33/3
- Ferrari 512M, Ferrari 512S & Ferrari 312PB
- Lola T70 Mk.3B Chevrolet & Lola T212 Ford
- Chevrolet Corvette
International Cup for GT Cars
- Porsche 911S
- Chevrolet Corvette
- Opel GT
- Alfa Romeo GTA