As a Noun: 1. The release of gases from a vehicle due to a hole or crack in the exhaust system. English = exhaust leakage. Note: 1. The signer in the video is giving an Auslan explanation of the English keywords EXHAUST LEAKAGE. There appears to be no commonly used Auslan sign for EXHAUST LEAKAGE for most signers (but some signers represent this visually using depicting signs, once they have established the topic). If you know a sign for EXHAUST LEAKAGE used by you or other Auslan users (deaf people or interpreters) please go to "Report missing sign" and supply details. Thank you.