Greenworks 60V 21 in Self-Propelled
The most battery per dollar in this group: a self propelled steel deck mower that handles up to about 3/4 acre on one charge.
Amazon $449.98$449.98
The Greenworks 60V 21 in Self-Propelled is the better lawn mower overall, rated 4.0 to 3.4. The Greenworks 60V 21 in Self-Propelled leads on power, cutting modes and deck. The SKIL PWR CORE 40 20 in Self-Propelled wins on warranty. The SKIL PWR CORE 40 20 in Self-Propelled costs $30.98 less ($419 vs $449.98).
SKIL PWR CORE 40 20 in Self-Propelled
#11 in Self-propelledFull review
A low cost self propelled 20 in mower with a long warranty, for lawns up to about a third of an acre.
Amazon $419$419
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 Greenworks 60V 21 in Self-Propelled for power (480 Wh of battery included vs 240 Wh of battery included), cutting modes (3 ways to cut: bag, mulch, side discharge vs 2 ways to cut: bag, mulch) and deck (21 in deck vs 20 in deck).
- Choose the SKIL PWR CORE 40 20 in Self-Propelled for warranty (5-year warranty vs 4-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 | Greenworks 60V 21 in Self-Propelled | SKIL PWR CORE 40 20 in Self-Propelled |
|---|---|---|
| Overall rating | 4.0/5 | 3.4/5 |
| Value 30% | 78 $21.43 per inch of deck ($449.98 with batteries and charger, 21 in deck) | 81 $20.95 per inch of deck ($419 with batteries and charger, 20 in deck) |
| Deck 20% | 12 21 in deck | 0 20 in deck |
| Power 15% | 94 480 Wh of battery included | 26 240 Wh of battery included |
| Cutting modes 15% | 100 3 ways to cut: bag, mulch, side discharge | 50 2 ways to cut: bag, mulch |
| Warranty 20% | 75 4-year warranty | 100 5-year warranty |
Specifications
| Greenworks 60V 21 in Self-Propelled | SKIL PWR CORE 40 20 in Self-Propelled | |
|---|---|---|
| Cutting | ||
| Deck width | 21 in | 20 in |
| Deck | Steel | - |
| Cutting height | 1.3 to 4 in, 7 positions | 1.5 to 4 in, 7 positions |
| Bag | Yes | Yes |
| Bag capacity | - | 1.7 bushels |
| Mulch | Yes | Yes |
| Side discharge | Yes | No |
| Power | ||
| Power | Battery | Battery |
| Engine or battery | 60 V, 8 Ah of battery | 40 V, 6 Ah of battery |
| Battery energy | 480 Wh | 240 Wh |
| Battery included | Yes | Yes |
| Runtime | 60 min | 50 min |
| Brushless motor | Yes | Yes |
| Build | ||
| Drive | Rear-wheel drive | Rear-wheel drive |
| Folds upright | Yes | Yes |
| Weight | 65 lb | - |
| Warranty | 4 years | 5 years |
| Battery warranty | 4 years | 2 years |