Jo Siffert and Pedro Rodríguez, who had an intense rivalry driving for John Wyer's Gulf-sponsored works Porsche endurance sportscar team both lost their lives racing in 1971. Rodriguez died driving a Ferrari 512 at an Interserie race at the Nosiring, Germany in July; and Siffert died in a fiery crash at the World Championship Victory Race non-championship Formula One event at Brands Hatch in October.
The Belgian Grand Prix was originally supposed to be held on 6 June (between the Monaco and Dutch Grands Prix), at the notorious 8.7 mile (14.1 km) Spa-Francorchamps circuit, but the failure of the track owners and authorities to bring Spa up to mandatory safety specs meant that the circuit was deemed unsuitable for Formula One cars to race on and the event was promptly cancelled. And the Mexican Grand Prix was originally supposed to be the last race of the year, but the FIA cancelled the race because of the previous year's events, where a gigantic crowd turned up to see the race and they were situated in front of the barriers during the race.
1971 Constructors Championship final standings
Lotus-Ford placed 5th in the 1971 Constructors title
Points were awarded on a 9-6-4-3-2-1 basis to the first six finishers at each round, however only the best placed car from each manufacturer was eligible to score points. The best five results from the first six rounds and the best four results from the last five rounds were retained.
^Championship points were awarded on a 9-6-4-3-2-1 basis to the top six finishers in each race.
^Only the best 5 results from the first 6 rounds and the best 4 results from the last 5 rounds counted towards the Championship. Numbers without parentheses are Championship points; numbers in parentheses are total points scored.