Petrolhead is a popular term that is typically used to describe someone who has an intense passion for cars and racing. However, there are many other words that can be used to describe someone with a love for automobiles. One synonym is car enthusiast which is a term that is widely used to describe people who have a deep interest in cars. Another alternative would be gearhead which focuses on the mechanical aspect of the car and what's under the hood. Another possibility is speed freak, which refers to people who love going fast and enjoy living life on the edge. Other synonyms include motorhead, car fanatic, and auto buff. Regardless of what term is used, these people all share a deep love for automobiles and everything that comes with them.