Many of the questions relate to a sample vehicle using a composite power-train control system featuring computerized engine control technology used by most manufacturers. This vehicle is described in the Composite Vehicle Type 3 Reference Booklet that is provided both before and at the time of testing. Use the link below to download and review this booklet prior to taking the L1 test.
To register for the regular L1 certification test, you must have passed the Automobile Engine Performance (A8) test. To register for the recertification version of the Advanced Engine Performance Specialist Test (L1R), you must have previously passed the regular L1 test.