Why checking a used tractor is critical
A used tractor can be a great deal — or a money pit. Unlike a car, a tractor endures extreme loads (pulling, lifting, vibrations) and a hidden defect can cost thousands. Here are the 15 points to check systematically.
The 15 checkpoint items
1. Engine hours
This is the mileage equivalent. A farm tractor easily runs 500-800h/year in operation. A 5,000h tractor can be perfectly healthy if well maintained. A 2,000h tractor beaten on heavy plowing can be dead.
Red flags: reset counter (check consistency with visible wear), over 8,000h without major service.
Price benchmarks (France 2026, 100-150 hp tractors):
- 0-2,000h: 70-90% of new price
- 2,000-5,000h: 40-65% of new price
- 5,000-8,000h: 25-40% of new price
- 8,000h+: free negotiation
2. Engine oil
Pull the dipstick and observe:
- Black but fluid → normal
- Black and thick → overdue oil change
- Gray/milky → water in oil (potential head gasket, serious leak)
- Metal flakes → advanced internal wear, walk away
3. Cold start
Ask to see a cold start (not a warm engine restart). A healthy engine should start in 2-5 seconds with preheat. Blue smoke at startup → worn rings. Persistent white smoke → preheat issue or head gasket.
4. Exhaust smoke under load
Run the engine under load (PTO loaded, or pulling). Slight black smoke at full load is normal (especially old mechanical engines). Constant black smoke → faulty injection, worn injectors or tired turbo.
5. Hydraulics
This is often the first system to fail. Check:
- 3-point hitch: raises/lowers smoothly, no jerking
- Distributors: no external leaks, cylinders hold position
- Hydraulic pump: no whining or grinding at idle
- Hydraulic oil: clean, no foam (foam = air intake)
Cost of a hydraulic pump: €1,500-4,000 depending on model. This is THE item that ruins a used purchase.
6. PTO (Power Take-Off)
Engage PTO at idle. It should engage smoothly, without clunking. Run it at full speed for 5 minutes — listen for abnormal noises. Check that the PTO brake stops the shaft in under 5 seconds.
7. Transmission
- Manual gearbox: shift through all gears in neutral, engine running. None should crunch.
- Powershift: shifts should be smooth, no jerking
- CVT/Vario: check for slipping on uphill under load
8. Tires
New agricultural tires cost €800-2,500 each. Check:
- Tread depth (minimum 50% for negotiation)
- Sidewall cracks (UV aging)
- Manufacturing date (DOT code)
- Wear symmetry (uneven wear → alignment problem)
9. Frame and hitch
Inspect the frame underneath:
- Weld cracks on the frame rails
- Advanced corrosion (flaking rust plates)
- Lift arms: play in the ball joints?
- Hitch hooks: pin wear
10. Steering
Hydrostatic steering: should be smooth with no hard spots when cold. Check for play (the wheel shouldn't turn more than 5° before the wheels respond).
11. Brakes
Brake on a slight slope. The tractor should stop straight, without pulling to one side. Check the parking brake: it should hold the tractor on a 15% grade.
12. Electrical system
Check everything works: headlights, indicators, beacon, 7-pin trailer socket, work lights. A poor electrical system often indicates overall neglected maintenance.
13. Air conditioning (if equipped)
Turn on the AC and verify it cools within 5 minutes. A recharge costs €150-300 — a dead compressor is €1,000+.
14. Service records
Ask for oil change receipts, dealer service records. A tractor without maintenance history is a risk. Check the consistency of hours on invoices against the meter.
15. Real-world test
Don't settle for a lap around the yard. Ask to:
- Plow or harrow a patch of field (engine + hydraulic load)
- Climb a hill with a loaded trailer (transmission)
- Work the 3-point hitch for 15 minutes (sustained hydraulic load)
