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A neutral, side-by-side reference of each model's stated specifications. MowerFacts does not rank one model above another — read the values and decide what fits your needs.

Best suited for

What each model is built for, from its duty class and key specs. This is a neutral reference — MowerFacts does not rank one model above another.

  • Ryobi 40V HP BRUSHLESS 20 in PUSH MOWER — residential: typical home lawns; 20-inch deck; battery (no fuel or engine maintenance)
  • Ryobi 18V ONE+ HP Brushless 16 in Push Mower — residential: typical home lawns; 16-inch deck; battery (no fuel or engine maintenance)
Side-by-side specifications: Ryobi 40V HP BRUSHLESS 20 in PUSH MOWER vs Ryobi 18V ONE+ HP Brushless 16 in Push Mower
Spec 40V HP BRUSHLESS 20 in PUSH MOWER
Ryobi · Push / Walk-Behind
18V ONE+ HP Brushless 16 in Push Mower
Ryobi · Push / Walk-Behind
Engine
Power Source battery battery
Fuel Type Battery / Electric
Electrical
Voltage 40 V 18 V
Deck
Cutting Width 20 in (508 mm) 16 in (406 mm)
Min Cut Height 1 in (25 mm) 1.5 in (38 mm)
Max Cut Height 4 in (102 mm) 4 in (102 mm)
Deck Material Composite ABS Plastic
Discharge Mulching, Bagging, and Side Discharge Mulching and Bagging
Drive
Drive Type push Push
Dimensions
Weight 46 lbs (21.1 kg) 34 lbs (15.6 kg)
General
Bagger Capacity 1.7 bu (59.9 L)
Warranty 5 yr 3 yr

40V HP BRUSHLESS 20 in PUSH MOWER: Specs verified against the manufacturer spec sheet on Jun 6, 2026 — ryobitools.com.

18V ONE+ HP Brushless 16 in Push Mower: Specs verified against the manufacturer spec sheet on Jun 6, 2026 — ryobitools.com.

Independent reference database. Specs compiled from manufacturer sources and normalized for comparison; verify with the manufacturer or dealer before purchase.