There are many different reasons why people collect diecast cars. People tend to collect them as an investment opportunity or as a hobby. Those who collect them as a hobby will likely aim to collect models in a certain field (ie. auto, construction, farming equipment). Those who like a specific car company (ie. Cadillac, Chevy, Ford) will attempt to collect different models for that specific brand. Those who like a certain manufacturer (ie. Hot Wheels, Jada Toys, Maisto) will try to collect as many models from that company as they can.

The first step in collecting models is deciding on the scale that you’re going to collect. Larger-scale premium models (ie. 1/12, 1/18, 1/24) are generally made with attention to detail. Features such as doors, trunk/boot, and hood/bonnet that open, a detailed engine compartment, steerable wheels, glossy exterior paint, and tires mounted on a workable suspension system that replicate 1:1 automobiles. Brands such as Jada Toys and Maisto fabricate custom diecast model cars with features such as custom rims, custom body kits, custom paint jobs, detailed interiors with audio and video systems, and custom grilles. In smaller scales (1/32, 1/43, 1/64) some of the details are often eliminated. In smaller scale replicas, generally the steering do not work, only the front doors and hood open, and the interior is not detailed.