Best String Trimmers · head-to-head

EGO POWER+ ST1623T 16" LINE IQ with POWERLOAD vs Ryobi RY40250 40V Expand-It Attachment Capable String Trimmer

A sourced, side-by-side comparison. Ryobi RY40250 40V Expand-It Attachment Capable String Trimmer is cheaper at $149. Every spec and price links to its source.

Which is better: the EGO POWER+ ST1623T 16" LINE IQ with POWERLOAD or Ryobi RY40250 40V Expand-It Attachment Capable String Trimmer?

The EGO POWER+ ST1623T 16" LINE IQ with POWERLOAD wins 1 of the 1 specs we compare head to head; the other wins 0. The Ryobi RY40250 40V Expand-It Attachment Capable String Trimmer is the cheaper at $149. Get the EGO POWER+ ST1623T 16" LINE IQ with POWERLOAD for the stronger spec sheet, the Ryobi RY40250 40V Expand-It Attachment Capable String Trimmer to spend less.

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Full spec sheet

marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.

Spec EGO POWER+ ST1623T 16" LINE IQ with POWERLOAD Ryobi RY40250 40V Expand-It Attachment Capable String Trimmer
US price $329 $149
BrandEGORyobi
Released2024
Power source battery battery
Cutting swath (in) 16 in 15 in
Shaft type straight straight
Line diameter (in) 0.095 in 0.080 in
Feed type auto bump
Engine cc or voltage 56 V 40 V
Weight (lb) 7.7 8.92
Release year 2024

Sources — EGO POWER+ ST1623T 16" LINE IQ with POWERLOAD: egopowerplus.com (verified 2026-06-19). Ryobi RY40250 40V Expand-It Attachment Capable String Trimmer: ryobitools.com (verified 2026-06-19).

What's the difference between the EGO POWER+ ST1623T 16" LINE IQ with POWERLOAD and Ryobi RY40250 40V Expand-It Attachment Capable String Trimmer?

Where the two actually differ on the specs we track (5 of 7). Matching specs are omitted.

  • Cutting swath (in): EGO POWER+ ST1623T 16" LINE IQ with POWERLOAD 16 in vs Ryobi RY40250 40V Expand-It Attachment Capable String Trimmer 15 in
  • Line diameter (in): EGO POWER+ ST1623T 16" LINE IQ with POWERLOAD 0.095 in vs Ryobi RY40250 40V Expand-It Attachment Capable String Trimmer 0.080 in
  • Feed type: EGO POWER+ ST1623T 16" LINE IQ with POWERLOAD auto vs Ryobi RY40250 40V Expand-It Attachment Capable String Trimmer bump
  • Engine cc or voltage: EGO POWER+ ST1623T 16" LINE IQ with POWERLOAD 56 V vs Ryobi RY40250 40V Expand-It Attachment Capable String Trimmer 40 V
  • Weight (lb): EGO POWER+ ST1623T 16" LINE IQ with POWERLOAD 7.7 vs Ryobi RY40250 40V Expand-It Attachment Capable String Trimmer 8.92

What reviewers say

Sourced tester consensus for each — the "what people who used it think" layer, not just specs.

EGO POWER+ ST1623T 16" LINE IQ with POWERLOAD

Only one whitelisted tester, Pro Tool Reviews, published a hands-on review of this exact model (design notes list Model: EGO ST1623T kit / ST1620T bare tool). PTR rated it 9.7/10, praising the automatic Line IQ feed that eliminates bump-feeding, the easiest PowerLoad line loading, excellent cutting power with low vibration, and a measured 1hr 4min runtime on high with a 4.0Ah battery, while flagging that fast line breakage around hard obstacles like fences can outpace the auto-feed with no manual override. (1 sourced review, 1 lab-tested.)

Praised: Automatic Line IQ feeding eliminates stopping to bump-feed the head; PowerLoad self-winding makes line changes the easiest tested; Excellent cutting power with low vibration.

Flagged: Line can break off faster than the system re-feeds it around fences/hard obstacles; No way to manually extend the trimmer line.

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