Which scenario would NOT be covered under the Consumer Guarantees Act?

The scenario involving purchasing a second-hand bike from a private seller is not covered under the Consumer Guarantees Act (CGA). The CGA is designed to protect consumers in transactions involving goods and services, but it primarily applies to sales made in a commercial context. When a private seller is involved, as in the case of purchasing from an individual rather than a business, the protections afforded by the CGA do not extend to that transaction.

In contrast, buying a new car from a dealership, purchasing groceries from a supermarket, and buying furniture from a retail store all occur within a commercial context, where the seller is expected to meet the guarantees set out in the CGA. These guarantees include acceptable quality, fitness for purpose, and other standard protections that consumers are entitled to when dealing with businesses. Therefore, the lack of coverage for the private sale scenario is rooted in the unique nature of consumer protections that apply only in business-to-consumer transactions.