EXHIBIT 21 ENVIROTEST SYSTEMS CORP ENVIROTEST TECHNOLOGIES, INC. SUBSIDIARIES ENVIROTEST SYSTEMS CORP. Subsidiary Jurisdiction of Incorporation ---------- ----------------------------- Envirotest Technologies, Inc. (1) Delaware Ebco-Hamilton Test Systems Ltd. (4) British Columbia Hamilton Test Systems (B.C.) Ltd. (1) British Columbia EBCO-Hamilton Partners (2) British Columbia Envirotest Partners (3) Pennsylvania (Partnership) Remote Sensing Technologies, Inc. (1) Delaware Envirotest Wisconsin Inc. (1) Wisconsin Systems Control. Inc. (1) Washington ES Funding Corp. (1) Delaware Envirotest Holdings, Inc. (1) Delaware Envirotest Acquisition Co. (1) Delaware EBCO Automotive Testing LTD. (1) British Columbia ENVIROTEST TECHNOLOGIES, INC. None. (1) Wholly owned (2) Controlled by Envirotest, but less than wholly-owned (3) Wholly owned by Envirotest Systems Corp. and Envirotest Technologies, Inc. (4) Wholly owned by Envirotest Systems Corp. and EBCO Automotive Testing LTD.