Compare Mowers
List prices are the manufacturer’s published figures, re-checked daily; they exclude tax, freight and dealer setup.
A side-by-side reference of each model's stated specifications. MowerFacts doesn’t give opinions: where a published, spec-derived rule can separate machines we mark a Data Pick and show the rule; here, 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)
What’s different? The 5 differences that matter most, from the published figures.
- 40V HP Brushless 20 in Push Mower runs on a 40 V battery; 18V ONE+ HP Brushless 16 in Push Mower runs on a 18 V battery, a 22 V difference. Battery voltage names the platform. Run time depends on the pack's capacity in amp-hours and on the cutting load.
- 40V HP Brushless 20 in Push Mower has a 20 in (508 mm) deck; 18V ONE+ HP Brushless 16 in Push Mower has a 16 in (406 mm) deck, a 4 in difference. Deck width sets how much grass each pass covers. Mowing time also depends on ground speed, turns and obstacles, so a wider deck alone does not fix the job's length. Time both decks on your own lawn ›
- 40V HP Brushless 20 in Push Mower carries a 5-year warranty; 18V ONE+ HP Brushless 16 in Push Mower carries a 3-year warranty, a 2 years difference. Warranty length is the maker's published term. Conditions and commercial-use limits differ between makers.
- 40V HP Brushless 20 in Push Mower has Mulching, Bagging & Side Discharge discharge; 18V ONE+ HP Brushless 16 in Push Mower has Mulching and Bagging discharge.
- 40V HP Brushless 20 in Push Mower weighs 42 lbs (19.1 kg); 18V ONE+ HP Brushless 16 in Push Mower weighs 34 lbs (15.6 kg), a 8 lbs difference. Operating weight bears on trailer payload, ramps and soft turf. On its own it says nothing about build quality. What 40V HP Brushless 20 in Push Mower's weight means for a trailer ›
1 more difference, what isn’t comparable
Other verified differences
- 40V HP Brushless 20 in Push Mower lists at $249; 18V ONE+ HP Brushless 16 in Push Mower lists at $229, a $20 difference.
Not comparable
- Deck Material: not published for 40V HP Brushless 20 in Push Mower.
Verified means each manufacturer publishes the figure. A bigger number is only a bigger number; nothing here says which machine is better. The full specification table is below.
Which is faster on your property? › Measure your lawn once and MowerFacts times all 2 against it.
| Spec | 40V HP Brushless 20 in Push Mower Ryobi · Push / Walk-Behind |
18V ONE+ HP Brushless 16 in Push Mower Ryobi · Push / Walk-Behind |
|---|---|---|
| List price | $249 | $229 |
| Engine | ||
| Power Source | battery | battery |
| Fuel Type | Battery / Electric | Battery / Electric |
| Electrical | ||
| Voltage | 40 V | 18 V |
| Deck | ||
| Cutting Width | 20 in (508 mm) | 16 in (406 mm) |
| Min Cut Height | 1.5 in (38 mm) | 1.5 in (38 mm) |
| Max Cut Height | 4 in (102 mm) | 4 in (102 mm) |
| Deck Material | — | ABS Plastic |
| Discharge | Mulching, Bagging & Side Discharge | Mulching and Bagging |
| Drive | ||
| Drive Type | Push | Push |
| Dimensions | ||
| Weight | 42 lbs (19.1 kg) | 34 lbs (15.6 kg) |
| General | ||
| 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.