The reigning champions had an awful Austrian Grand Prix mere days ago, with both Bottas and Lewis Hamilton retiring with failures.
Yet Finn Bottas says that Mercedes has put everything right for Silverstone.
"The way the team reacted and found the bugs, it was really cool to see how quickly everything was fixed," he told reporters.
"Everyone is confident that it will not happen again, so I'm not worried. I think we still have a truly reliable package."
Mercedes head into the weekend 10 points behind leaders Ferrari.