Gas system check

The gas system test (GAP) is a mandatory preliminary test for gas-powered vehicles from April 1, 2006, before they are approved for the main test.

The GAP is also necessary after special events (e.g. repairs, accidents). After installing a gas system in a car, a gas system installation test (GSP) is required.

Web links

• TÜV Hessen
• GAP-Plus ( Memento from June 16, 2006 in the Internet Archive )