Car engines have a very profound sound and can often be very powerful. Once you rev the engine a few times it often makes a growling sound. The engine of car is the most important part of the car because it initiates everything. The engine being referred to in this article is from the Infiniti Q50 or Q60 sport exhaust makes a powerful growling sound. Infinitis according to the article, make the best sounds with certain particular models. However, these models are very pricey but the the Q models are made to where they are least expensive and very affordable.