Worx WG163 GT 3.0 20V 12 in
#13 in BatteryFull review
A cheap, light trimmer and edger for small lawns and townhouse yards. Skip it if you have long fence lines or tough weeds.
Amazon $106.78$106.78
The Worx WG163 GT 3.0 20V 12 in is the better string trimmer overall, rated 3.4 to 3.0. The Worx WG163 GT 3.0 20V 12 in leads on value and swath. The Stihl FSA 57 Trimmer wins on line. The Worx WG163 GT 3.0 20V 12 in costs $83.21 less ($106.78 vs $189.99).
Stihl FSA 57 Trimmer
#17 in BatteryFull review
A light, simple trimmer for small lawns and edges, sold and serviced by Stihl dealers.
STIHL $189.99$189.99
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 Worx WG163 GT 3.0 20V 12 in for value ($8.90 per inch of swath ($106.78 with batteries and charger, 12 in swath) vs $17.27 per inch of swath ($189.99 with batteries and charger, 11 in swath)) and swath (12 in swath vs 11 in swath).
- Choose the Stihl FSA 57 Trimmer for line (.080 in line vs .065 in line).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every battery string trimmer; a clear win is highlighted. How we rank explains each one.
| Factor weight | Worx WG163 GT 3.0 20V 12 in | Stihl FSA 57 Trimmer |
|---|---|---|
| Overall rating | 3.4/5 | 3.0/5 |
| Value 30% | 90 $8.90 per inch of swath ($106.78 with batteries and charger, 12 in swath) | 30 $17.27 per inch of swath ($189.99 with batteries and charger, 11 in swath) |
| Line 20% | 0 .065 in line | 50 .080 in line |
| Swath 15% | 20 12 in swath | 0 11 in swath |
| Weight 15% | 100 5.5 lb (without battery) | 100 5.9 lb (without battery) |
| Warranty 20% | 50 3-year warranty | 50 warranty not published (neutral score used) |
Specifications
| Worx WG163 GT 3.0 20V 12 in | Stihl FSA 57 Trimmer | |
|---|---|---|
| Cutting | ||
| Cutting swath | 12 in | 11 in |
| Largest line | .065 in | .080 in |
| Line feed | Push-button feed | Bump feed |
| Shaft | Straight | Straight |
| Converts to edger | Yes | No |
| Takes attachments | No | No |
| Power | ||
| Engine or battery | 20 V, 4 Ah of battery | 36 V, 2 Ah of battery |
| Battery energy | 80 Wh | 72 Wh |
| Battery included | Yes | Yes |
| Runtime | - | 25 min |
| Build | ||
| Weight | 5.5 lb (without battery) | 5.9 lb (without battery) |
| Warranty | 3 years | - |