Red Bull could swap engine suppliers next season with Christian Horner acknowledging that they have "options" for the future.
Although Red Bull won the Chinese Grand Prix with Renault power, the team's weekend in Shanghai was not without engine dramas.
Ricciardo's engine went up in smoke in final practice leaving Red Bull in a race against time to get him into qualifying.
They made it by two minutes and a day later he won the grand prix.
However, it was just the latest engine issue that had befallen Red Bull with Horner conceding they could look elsewhere for 2019.
"Luckily we have options," he told Auto Motor und Sport.
"Renault wishes to continue working with us, and we have a front row seat with regards to Honda.
"We can observe how they develop."
As of the start of this season, Honda are powering Red Bull junior team Toro Rosso and have shown vast improvements compared to their time with McLaren.
Horner added that Red Bull would make their decision "in the summer break."