Buyers must prioritize the powertrain and load capacity. For electric versions, ensure a high-capacity Lithium or Lead-acid battery (e.g., 60V/72V) with a range of at least 60-100km per charge. For gasoline models, engine displacement typically ranges from 150cc to 300cc; look for water-cooled engines if operating in hot climates. The payload capacity should be verified against your needs, usually ranging from 500kg to 1500kg, supported by a reinforced chassis and heavy-duty leaf spring suspension.