Sylvester Stallone, Jason Statham and Liam Hemsworth feature in the action-packed clip, which sees the mercenaries apparently cornered during a chase through the jungle.
Stallone, Statham and Hemsworth star in the sequel alongside Arnold Schwarzenegger, Bruce Willis and Jean-Claude Van Damme.
A lawsuit against Stallone regarding the original film's screenplay was defeated last week.
It was reported recently that The Expendables is being developed for a television series.
The Expendables 2 will be released on August 17. Watch the new clip below: