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Kubota L3970 vs Kubota STW40
Verdict: Kubota L3970 vs Kubota STW40
The Kubota L3970 and the Kubota STW40 are both tractors — here is how they stack up on the figures that matter. Both are rated at the same 39 hp. Kubota STW40 is the lighter machine (2,436 kg vs 4,057 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Kubota L3970 is the newer design (2026 vs 2015). Use the full side-by-side spec tables below to weigh the details against your own operation, and confirm with a dealer demo.
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Fit & specs
Kubota
71
Fit score
Best match
Clear
Kubota
71
Fit score
Best match
Clear
Rated power
39 hp
39 hp
Confidence
98%
98%
Guide price
—
—
Overview
Manufacturer
KubotaReference
KubotaReference
liquid-cooledReference
liquid-cooledReference
Differential lock
—
mechanical rearReference
Engine
Engine (gross)
29.1 kWReference
28.7 kWReference
Displacement
1.8 LReference
1.8 LReference
Bore/Stroke
87 x 102 mmReference
86 x 102 mmReference
Power (gross)
29.1 kWReference
—
Fuel system
common rail direct injectionReference
—
Rated RPM
2300Reference
2700Reference
Torque
148.3 NmReference
—
Starter
electricReference
electricReference
Starter volts
12Reference
12Reference
Fuel tank
—
29.5 LReference
Engine (net)
—
27.3 kWReference
Rated Power (net)
—
27.3 kWReference
Rated Power (gross)
—
28.7 kWReference
Transmission
Type
hydrostaticReference
hydrostaticReference
Gears
infinite forward and reverse (3-range)Reference
infinite forward and reverse (3-range)Reference
PTO & Hydraulics
PTO (claimed)
23.0 kWReference
20.4 kWReference
Rear valves
3Reference
—
Pump flow
37.2 lpmReference
29.9 lpmReference
Rear Type
IReference
IReference
Rear lift (at ends)
1700 kgReference
—
Rear lift (at 24"/610mm)
1200 kgReference
—
Rear PTO
independentReference
independentReference
Rear PTO Type
540 (1.375)Reference
540 (1.375)Reference
Engine RPM
540@2299Reference
2500@2734Reference
Pressure
—
169.7 barReference
Control
—
position controlReference
Mid PTO
—
independentReference
Mid PTO Type
—
2500Reference
Dimensions
Wheelbase
195 cmReference
161 cmReference
Weight
4057 to 4387 poundsReference
2436 to 2756 poundsReference
Front tire
7.00-16Reference
6.00-12Reference
Rear tire
12.4-24Reference
9.5-22Reference
Standard tires (ag)
Front: 7.00-16. Rear: 12.4-24Reference
Front: 6.00-12. Rear: 9.5-22Reference
Length
309 cmReference
294 cmReference
Width
151 cmReference
118 cmReference
Height (ROPS)
246 cmReference
234 cmReference
Height (cab)
231 cmReference
216 cmReference
ROPS Weight
1840 kgReference
1104 kgReference
Cab Weight
1989 kgReference
1250 kgReference
Ground clearance
34 cmReference
23 cmReference
Front tread
115 cmReference
102 cmReference
Rear tread
119 to 148 cmReference
94 to 106 cmReference
Lawn/turf front
—
24x8.50-14Reference
Lawn/turf rear
—
13.6-16Reference
Kubota L3970 attachments
Electrical
Ground
negativeReference
negativeReference
Battery CCA
680Reference
—
Battery volts
12Reference
12Reference
Charging system
—
alternatorReference
Cab Charging amps
—
60Reference
Attachment overview
Kubota BH92A Backhoe
Backhoe type
Kubota BH92A BackhoeReference
—
Transport height
260 cmReference
—
2-Foot flat digging depth
265 cmReference
—
Reach from pivot
381 cmReference
—
Loading height
224 cmReference
—
Bucket Rotation
180°Reference
—
Kubota STW40 attachments
60" Mower deck
Cutting width
—
152 cmReference
Fit score weighs budget, operation size, crop match and data confidence against the details above. It’s guidance, not advice — always confirm with a dealer demo.