Lowriders are vehicles that have had their stock riding heights decreased, so they are closer to the ground. This is done primarily to improve looks, but can also be done to improve handling, etc. The term "lowriders" can also be used to describe vehicles with hydraulics, air bags, etc., which enables their ride height to be varied.

The Rod and Custom category includes sites about cars which have been modified from their original manufactured condition in order to improve performance or appearance. Generally this category covers "traditional" rods and customs such as pre-'49 street rods, '50s-style custom cars, pro-street, and modified muscle and pony cars.

Sport Compact cars are generally customized late-model Japanese, European, or American compact cars which feature high performance 4 or 6 cylinder engines and independent suspensions. Other terms used to describe these cars include "Hot Compacts" or "Hot Hatches".