They are not impulse-purchase products. Low-consideration products, on the other hand, are typically inexpensive, and product choice is usually made right at the point of purchase. Laundry detergent is a good example. People don't need to go through a long process before deciding which laundry detergent to use. They usually scan the supermarket shelf and pick out a brand that they have an inclination toward or some loyalty to.
People can be as loyal to a brand of car as they are to a brand of soap.
But there are some important differences. For that reason, it's easier for advertising to increase purchase intent. It also means that campaigns to induce trial purchase have a much greater chance of success. On the other hand, advertising for high-consideration products might be more effective in areas where people are focused on seeking information for a purchase. Advertising for low-consideration products can be effective in associating the brand with situations in which the consumer is likely to purchase the product.