You need to know how much goods the customer wants to pull, what kind of goods to pull, such as livestock, the floor of the cargo compartment should not be corrugated, and how the road conditions are (flat roads, broken roads). For example, the engine of 485 can pull 3-4 tons on a flat road, but the engine will not feel weak obviously in areas with large slopes and more, and the customer requires the scale of the area.
This is the most basic and can meet the requirements of ordinary users. Some users want to buy high-end light trucks. On the basis of the above, you should add the introduction of functionality and comfort to introduce the characteristics of your product.
I hope it helps you.