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Simplicity 12RTH vs Simplicity Sovereign 3212V
Verdict: Simplicity 12RTH vs Simplicity Sovereign 3212V
The Simplicity 12RTH and the Simplicity Sovereign 3212V are both lawn tractors — here is how they stack up on the figures that matter. Both are rated at the same 12 hp. Simplicity 12RTH holds more fuel (8.3 L vs 5.7 L) for longer stints between fills. Simplicity 12RTH is the newer design (1992 vs 1970). 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
Simplicity
62
Fit score
Best match
Clear
Simplicity
62
Fit score
Best match
Clear
Rated power
12 hp
12 hp
Confidence
40%
40%
Guide price
—
—
Overview
Manufacturer
SimplicityReference
SimplicityReference
air-cooledReference
air-cooled horizontal-shaftReference
Variants
990570
—
gear with manual liftReference
990571
—
gear with power liftReference
990572
—
hydro with manual liftReference
990573
—
hydro with power liftReference
126RTG
gearReference
—
12RTH
hydrostaticReference
—
Engine
Fuel tank
8.3 LReference
5.7 LReference
Displacement
28.4 ciReference
30.16 ciReference
Bore/Stroke
87 x 78 mmReference
87 x 83 mmReference
Power (gross)
8.9 kWReference
—
Rated RPM
3600Reference
—
Starter
electricReference
electricReference
Starter volts
12Reference
12Reference
Oil capacity
1.4 LReference
—
Power
—
8.9 kWReference
Transmission
Gears
infinite forward and reverseReference
3 forward and 1 reverseReference
PTO & Hydraulics
Mid PTO
indepenentReference
independentReference
Clutch
manualReference
mechanial idler pulleyReference
Dimensions
Weight
186 kgReference
—
Front tire
15x6.0-6Reference
16x6.50-8Reference
Rear tire
18x8.5-8Reference
23x10.50-12Reference
Lawn/turf front
15x6.0-6Reference
16x6.50-8Reference
Lawn/turf rear
18x8.5-8Reference
23x10.50-12Reference
Length
160 cmReference
182 cmReference
Width
86 cmReference
87 cmReference
Height
100 cmReference
95 cmReference
Wheelbase
—
121 cmReference
Simplicity 12RTH attachments
Electrical
Ground
negativeReference
negativeReference
Battery volts
12Reference
12Reference
36" Mower deck
Type
belt-driven hydrostaticReference
CVT gearReference
Cutting width
91 cmReference
—
Cut height
3 to 8 cmReference
—
Simplicity 3212V attachments
Attachment overview
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.