The John Deere 9400 is a 4WD articulated field tractor built for big-acre tillage and heavy draft work. With a 6-cylinder, high-displacement diesel and a full powershift, it trades maneuverability for torque, traction, and long run times. It’s overkill for chores—this is a puller for wide implements on open ground.
Best Rated Specs (John Deere 9400 tractor)
General Specifications (John Deere 9400 tractor)
| Product Name | John Deere 9400 |
| Type | tractor |
| Brand | John Deere |
| Cabin Type | Cab |
| Battery | Three 12V, CCA 925A |
| Bore And Stroke | 127.0 mm X 165.0 mm (5 in X 6.5 in) |
| Brakes | Hydraulic wet disc |
| Compression Ratio | 16.0:1 |
| Coolant Capacity Litres | 61 L |
| Coolant Capacity | 64 qt |
| Cylinders | 6 |
| Displacement | 13 L |
| Engine Model | John Deere |
| Engine Type | Four-stroke, liquid-cooled, inline |
| Fuel Tank Capacity | 256 gal |
| Fuel Tank Capacity Us Litres | 969 L |
| Fuel Type | Diesel |
| Gears | 12 forward and 3 reverse |
| Horsepower Hp | 425 HP |
| Length | 274 in |
| Length Mm | 6950 mm |
| Oil Capacity | 44 qt |
| Rear Pto Type | Independent |
| Speed (Forward) | 19 mph |
| Speed (Reverse) | 6 mph |
| Steering Type | Hydrostatic power |
| Transmission Type | Full power shift |
| Weight | 37412 lbs |
| Width | 172 in |
What it means in practice: The 9400’s cab, hydraulic wet disc brakes, and hydrostatic power steering make long field days manageable, but its size and weight keep it in large, open fields. Transport and headlands require planning; it’s not a yard or loader tractor.
Higher than average John Deere 9400 tractor Specs
Lower than average John Deere 9400 tractor Specs
Coolant Capacity
The coolant capacity is a crucial measurement that refers to the amount of coolant the tractor's cooling system can hold. Coolant is used to regulate the engine temperature and prevent overheating.
The John Deere 9400 tractor has gigantic Coolant capacity of 64 (qt), which is 59 (qt) more than the average Coolant capacity of 5 (qt). The John Deere 9400 tractor is ranked 1 out of 489 tractors for Coolant capacity and we have rated it 100% out of 100%, which we consider to be among the very best.
Why it matters: High-draft work in warm seasons generates serious heat. The 64-qt (61 L) system keeps temps steady on long pulls so you can run full shifts without babying the temp gauge.
Coolant Capacity:
Cylinders
Cylinders refer to the components inside a tractor's engine that are responsible for converting fuel and air into energy. These cylindrical chambers play an important role as they house the pistons, which move up and down to generate power, propelling the tractor forward.
The John Deere 9400 tractor has outstanding Cylinders of 6 , which is 3 more than the average Cylinders of 3 . The John Deere 9400 tractor is ranked 1 out of 489 tractors for Cylinders and we have rated it 100% out of 100%, which we consider to be among the very best.
Field effect: Six big cylinders deliver smooth torque at working RPMs. That means steadier ground speed in tough soil and less lugging when you hit denser patches.
Cylinders:
Displacement
Tractors have displacement which refers to the total volume of air and fuel mixture an engine can draw in during one revolution. It determines the power output, fuel efficiency, and overall performance of the tractor.
The John Deere 9400 tractor has an excellent Displacement of 13 (L), which is 11 (L) more than the average Displacement of 2 (L). The John Deere 9400 tractor is ranked 1 out of 489 tractors for Displacement and we have rated it 100% out of 100%, which we consider to be among the very best.
Real-world takeaway: Displacement is your torque reservoir. At 13 L, the 9400 holds load without constant downshifts—ideal for deep tillage and wide air seeders.
Displacement:
Fuel Tank Capacity
Fuel tank capacity refers to the amount of fuel that the tractor's tank can hold. It indicates the tractor's range and operating time. A larger capacity allows for longer periods of work without refueling.
The John Deere 9400 tractor has really good Fuel tank capacity of 256 (gal), which is 245 (gal) more than the average Fuel tank capacity of 11 (gal). The John Deere 9400 tractor is ranked 2 out of 489 tractors for Fuel tank capacity and we have rated it 95% out of 100%, which we consider to be among the very best.
Productivity boost: With 256 gal (969 L), you’ll run dawn to dusk with fewer fuel stops. Plan safe refueling and storage—full tanks are heavy and not for hopping around the yard.
Fuel Tank Capacity:
Horsepower Hp
Tractor Horsepower (HP) refers to the unit of measurement that indicates the power output of the tractor's engine. It determines the tractor's ability to perform tasks like plowing fields, pulling heavy loads. More HP generally means more power.
The John Deere 9400 tractor has surprising Horsepower HP of 425 (HP), which is 388 (HP) more than the average Horsepower HP of 37 (HP). The John Deere 9400 tractor is ranked 3 out of 489 tractors for Horsepower HP and we have rated it 33% out of 100%, which we consider to be well below average.
What you can pull: 425 engine HP puts the 9400 in true tillage territory—rippers, big cultivators, heavy disks, large air drills. It’s built to drag wide iron at steady pace, not to finesse small PTO chores.
Note: In this tractor’s class, 425 HP is among the highest outputs—built for heavy draft, not lawn/utility tasks.
Horsepower Hp:
Length
Tractor length refers to the measurement of a tractor from its front to rear, including any attachments.
The John Deere 9400 tractor has groundbreaking Length of 274 (in), which is 172 (in) more than the average Length of 102 (in). The John Deere 9400 tractor is ranked 7 out of 489 tractors for Length and we have rated it 96% out of 100%, which we consider to be among the very best.
Trade-off: The long articulated frame tracks straight and plants power, but needs space. Expect wide turning radii and plan headlands and gate entries accordingly.
Length:
Oil Capacity
Tractor oil capacity refers to the total volume of oil required to properly lubricate and cool the tractor's engine. It is crucial because insufficient oil can lead to engine damage, while excess oil can cause overheating.
The John Deere 9400 tractor has a spectacular Oil capacity of 44 (qt), which is 40 (qt) more than the average Oil capacity of 4 (qt). The John Deere 9400 tractor is ranked 1 out of 489 tractors for Oil capacity and we have rated it 100% out of 100%, which we consider to be among the very best.
Maintenance angle: 44 qt helps cooling and longevity during continuous heavy load. Stick to interval changes; oil analysis is smart for machines that work hard all season.
Oil Capacity:
Speed (Forward)
Forward speed refers to how fast a tractor can move in the forward direction. It's important for farmers to consider the tractor's forward speed in order to optimize their workflow and accomplish tasks effectively.
The John Deere 9400 tractor has great Speed (forward) of 19 (mph), which is 10 (mph) more than the average Speed (forward) of 9 (mph). The John Deere 9400 tractor is ranked 23 out of 489 tractors for Speed (forward) and we have rated it 51% out of 100%, which we consider to be well below average.
Use case: Field gears are where it lives; 19 mph is fine between fields. Don’t judge it by road speed—it’s built to pull, not commute.
Speed (Forward):
Speed (Reverse)
The term "farming equipment tractor Speed (reverse)" refers to the maximum speed at which a tractor can travel in reverse. A high reverse speed enhances productivity and allows farmers to navigate through fields or tight spaces with ease.
The John Deere 9400 tractor has highly recommended Speed (reverse) of 6 (mph), which is 1 (mph) more than the average Speed (reverse) of 5 (mph). The John Deere 9400 tractor is ranked 129 out of 489 tractors for Speed (reverse) and we have rated it 22% out of 100%, which we consider to be well below average.
Reverse reality: 6 mph is plenty for lining up big implements. It’s not meant for long reverse runs—just precise positioning on headlands.
Speed (Reverse):
Weight
The weight of a tractor impacts how effectively the tractor can handle heavy tasks, such as plowing or pulling loads and fuel efficiency.
The John Deere 9400 tractor has highly recommended Weight of 37412 (lbs), which is 34614 (lbs) more than the average Weight of 2798 (lbs). The John Deere 9400 tractor is ranked 2 out of 489 tractors for Weight and we have rated it 93% out of 100%, which we consider to be excellent.
Grip vs. soil: At 37,412 lbs, mass = traction. You’ll hook up and pull, especially with correct ballast and tires. Watch compaction—run proper pressures and avoid saturated ground.
Weight:
Width
The tractor width refers to the measurement of the distance between the outer edges of the tractor's tires or tracks. This dimension is crucial as it determines the tractor's stability, maneuverability, and compatibility with different farming implements or attachments.
The John Deere 9400 tractor has surprising Width of 172 (in), which is 118 (in) more than the average Width of 54 (in). The John Deere 9400 tractor is ranked 1 out of 489 tractors for Width and we have rated it 100% out of 100%, which we consider to be among the very best.
Stability & transport: Overall width around 172 in typically reflects duals. Great stance in-field; check local road rules for transport widths and lighting/escort requirements.
Width:
Pros & Cons
- Pros: Massive torque for deep tillage; long run time (256 gal); stable cooling and oil capacity for heavy continuous load; articulated 4WD traction.
- Cons: Heavy and wide for transport; overkill for PTO/loader/yard tasks; large turning radius; operating costs (tires, fuel, fluids) match its size.
Summary
Bottom line: The John Deere 9400 is a big-acre, draft-first tractor. If your season is ripping, deep tillage, and hauling wide implements across long fields, it earns its keep. If you need nimble, PTO-precise, or chore-friendly work, step down to a smaller row-crop or loader-equipped unit.