Brazilian race organisers have said they're "surprised" by the status of the country's race on the 2017 Formula 1 calendar, which is marked as "subject to confirmation" along with two other races.
Both Germany and Canada also have an asterisk next to their races. Although it's known there are financial troubles with the German event and Montreal's contract hinges on an agreement to build a new pit and paddock complex, Brazil's Interlagos has a contract in place until 2020, having agreed and even begun on work to upgrade its own facilities.
Race organisers are therefore confused as to why the event is marked as 'TBC'.
"The Brazilian Grand Prix Organization, took notice, with surprise, of the 2017 F1 WC Calendar which shows the race TBC (to be confirmed)," they said in a short statement.
"There is a contract in place until 2020 every provision of which will be complied with as it has been for the past 45 years."
