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Simplicity 12RTG vs Simplicity 5212
Verdict: Simplicity 12RTG vs Simplicity 5212
The Simplicity 12RTG and the Simplicity 5212 are both lawn tractors — here is how they stack up on the figures that matter. Both are rated at the same 12 hp. Simplicity 5212 is the lighter machine (168 kg vs 186 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Simplicity 12RTG is the newer design (1992 vs 1987). 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
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Overview
Manufacturer
SimplicityReference
SimplicityReference
air-cooledReference
air-cooled vertical-shaftReference
Variants
126RTG
gearReference
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12RTH
hydrostaticReference
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Engine
Fuel tank
8.3 LReference
8.3 LReference
Displacement
28.4 ciReference
28.4 ciReference
Bore/Stroke
87 x 78 mmReference
87 x 78 mmReference
Power (gross)
8.9 kWReference
8.9 kWReference
Rated RPM
3600Reference
—
Starter
electricReference
electricReference
Starter volts
12Reference
12Reference
Oil capacity
1.4 LReference
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Transmission
Gears
5 forward and 1 reverseReference
5 forward and 1 reverseReference
Transmission
—
Peerless 801Reference
PTO & Hydraulics
Mid PTO
indepenentReference
—
Clutch
manualReference
—
Dimensions
Wheelbase
115 cmReference
122 cmReference
Weight
186 kgReference
168 kgReference
Front tire
15x6.0-6Reference
15x6.00-6Reference
Rear tire
18x8.5-8Reference
20x8.00-10Reference
Lawn/turf front
15x6.0-6Reference
15x6.00-6Reference
Lawn/turf rear
18x8.5-8Reference
20x8.00-10Reference
Length
160 cmReference
168 cmReference
Width
86 cmReference
85 cmReference
Height (steering wheel)
100 cmReference
104 cmReference
Clearance (front axle)
22 cmReference
25 cmReference
Clearance (rear axle)
15 cmReference
15 cmReference
Simplicity 12RTG attachments
Electrical
Ground
negativeReference
negativeReference
Battery volts
12Reference
12Reference
Battery AH
—
39Reference
36" Mower deck
Type
belt-driven gearReference
belt-driven gearReference
Cutting width
91 cmReference
—
Cut height
3 to 8 cmReference
—
Simplicity 5212 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.