Germany has been dropped from next year’s Formula 1 calendar and the Brazilian Grand Prix is also in doubt.
The calendar contains 20 races with Brazil listed as provisional.
F1 commercial boss Bernie Ecclestone told governing body the FIA he was still in talks with Brazil’s president and could not confirm the race’s place on the schedule until January.
The Canadian Grand Prix in Montreal, which had also been in doubt, has been confirmed.
Germany was unable to complete a deal for the race to be held at Hockenheim. In the country’s biennial swap deal, it is the turn of the Nurburgring but that circuit has financial problems and cannot host the F1 race.
The season starts in Australia on 26 March and ends in Abu Dhabi on 26 November. The British Grand Prix is on 16 July.