Classification within the 870191–870195 range depends on the tractor's rated engine output in kilowatts as declared by the manufacturer. Verify the rated kW against the subheading thresholds (18, 37, 75, and 130 kW) and confirm the figure on the engine data plate or technical specification sheet before filing entry.

Yes. Road tractors designed to haul semi-trailers fall under the 870121–870129 group, which is further divided by propulsion type (diesel, diesel-electric hybrid, spark-ignition hybrid, battery-electric, or other). Farm and industrial wheeled tractors are classified in the 870191–870195 power-band subheadings. The distinction turns on the vehicle's design purpose, not its engine size alone.