Senix 21 in 170cc FWD A025054-A
A 3-in-1 self-propelled mower for flat lawns with lots of trees and beds to steer around.
Amazon $392.45$392.45
The Senix 21 in 170cc FWD A025054-A is the better lawn mower overall, rated 3.6 to 3.5. The Senix 21 in 170cc FWD A025054-A leads on value and power. The Greenworks 80V 21 in Self-Propelled wins on warranty. The Senix 21 in 170cc FWD A025054-A costs $127.54 less ($392.45 vs $519.99).
Greenworks 80V 21 in Self-Propelled
#10 in Self-propelledFull review
A self propelled steel deck mower with a long warranty for owners of Greenworks 80V tools. Its short runtime suits lawns under half an acre unless you add a battery.
Amazon $519.99$519.99
Prices were last checked October 31, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the Senix 21 in 170cc FWD A025054-A for value ($18.69 per inch of deck ($392.45, 21 in deck) vs $24.76 per inch of deck ($519.99 with batteries and charger, 21 in deck)) and power (170 cc engine vs 320 Wh of battery included).
- Choose the Greenworks 80V 21 in Self-Propelled for warranty (4-year warranty vs 2-year warranty).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every self-propelled lawn mower; a clear win is highlighted. How we rank explains each one.
| Factor weight | Senix 21 in 170cc FWD A025054-A | Greenworks 80V 21 in Self-Propelled |
|---|---|---|
| Overall rating | 3.6/5 | 3.5/5 |
| Value 30% | 95 $18.69 per inch of deck ($392.45, 21 in deck) | 60 $24.76 per inch of deck ($519.99 with batteries and charger, 21 in deck) |
| Deck 20% | 12 21 in deck | 12 21 in deck |
| Power 15% | 62 170 cc engine | 49 320 Wh of battery included |
| Cutting modes 15% | 100 3 ways to cut: bag, mulch, side discharge | 100 3 ways to cut: bag, mulch, side discharge |
| Warranty 20% | 25 2-year warranty | 75 4-year warranty |
Specifications
| Senix 21 in 170cc FWD A025054-A | Greenworks 80V 21 in Self-Propelled | |
|---|---|---|
| Cutting | ||
| Deck width | 21 in | 21 in |
| Deck | Steel | Steel |
| Cutting height | 1.2 to 3.8 in, 6 positions | 1.4 to 4 in, 7 positions |
| Bag | Yes | Yes |
| Bag capacity | 1.7 bushels | - |
| Mulch | Yes | Yes |
| Side discharge | Yes | Yes |
| Power | ||
| Power | Gas | Battery |
| Engine or battery | 170 cc | 80 V, 4 Ah of battery |
| Battery energy | - | 320 Wh |
| Battery included | - | Yes |
| Runtime | - | 33 min |
| Brushless motor | - | Yes |
| Build | ||
| Drive | Front-wheel drive | Rear-wheel drive |
| Folds upright | - | Yes |
| Weight | 61.7 lb | 75 lb |
| Warranty | 2 years | 4 years |
| Battery warranty | - | 4 years |
| Released | - | 2024-02-10 |