Modern invented name styled after Diesel, an English word name of German mechanical origin.
Deizel is a modern invented name styled after Diesel, the English word associated with the German mechanical term. That connection gives it an industrial, hard-edged energy, as though it were designed to sound strong, fast, and slightly unconventional.
As a given name, Deizel feels very much of the modern era, where word names and stylized spellings can become identities of their own. The altered spelling softens the direct object-word feel of Diesel while keeping the same punchy sound. It has a bold, contemporary personality, with a sense of motion and a little rebellious flair.