A 4WD tractor should be discussed when soil, season, slope or pulling work makes traction more important than the lower cost of a simple 2WD tractor.
Traction priority
Heavy land preparation, damp soil, sloped ground and loaded trailer work are common reasons to request 4WD.
Whole-package review
A 4WD quote should consider tyres, weights, implements, transport dimensions and spare parts.
Avoid overbuying
If the work is mostly dry and light, a 2WD tractor may still be the better procurement decision.
Ask for a 4WD comparison
Send terrain, soil condition, implement list and port for a practical reply.