Emergency warp-out
From Transformers Wiki
When the Decepticons need to retreat in a hurry, they can use an emergency warp-out. It instantly transports them away from combat, where they disappear in a purple glow. Emergency warp-outs are very energy intensive. Megatron estimated that it would drain their energy reserves for stellar-cycles.
Fiction
2005 IDW continuity
Defeated, Megatron terminated the Latverian Project and ordered his troops to escape using an emergency warp-out. Man and Machine, Part Four