The quick answer

Choose the mower around your constraint—not its voltage badge.

The EGO presents the longest manufacturer runtime claim in this group. Greenworks combines a steel deck and four cutting modes in its referenced kit. Toro pairs a cast-aluminum deck with a pace-sensing drive system. Those are reasons to compare—not proof that one machine cuts better on your lawn.

At a glance

Verified specification comparison

ModelDeckClaimed runtime*DriveBest comparison fit
EGO POWER+LM2156SP21 in. compositeUp to 75 min.*Touch Drive self-propelledLonger mowing sessions
GreenworksMO80L41621 in. steelUp to 33 min.*Variable-speed self-propelledFeature value
Toro2156821 in. cast aluminumUp to 50 min.*Personal Pace Auto-DrivePremium controls

*Manufacturer claims are not directly comparable test results. Grass height, moisture, terrain, drive use, blade selection, temperature, and operator technique can change runtime.

The shortlist

Three distinct starting points

#1EGO POWER+LM2156SP21″
Long-runtime setup

21" Select Cut XP with Touch Drive

A strong spec-sheet match for shoppers who prioritize runtime, multi-blade flexibility, and compact vertical storage.

Battery platform
56V ARC Lithium
Deck
21 in. composite
#2GreenworksMO80L41621″
Straightforward 80V kit

80V 21" 4-in-1 Self-Propelled Mower

The comparison-friendly option for buyers who want a steel deck, four discharge modes, and an included 4.0Ah battery kit.

Battery platform
80V lithium-ion
Deck
21 in. steel
#3Toro2156821″
Adaptive drive feel

60V Max 21" Super Recycler

A specification-led pick for shoppers who value a cast-aluminum deck, pace-sensing self-propel, and a broad compatible-tool platform.

Battery platform
60V Max Flex-Force
Deck
21 in. cast aluminum
What the table cannot tell you

Runtime is a scenario, not a universal score.

A runtime claim usually reflects a particular battery, cutting mode, grass condition, and operating technique. A self-propelled mower also spends energy moving itself. Treat the number as a planning clue, then compare battery capacity, charging time, spare-battery cost, and whether you already own tools on that platform.

We will add standardized field-test results only when a test record exists. Until then, every runtime number on this page remains explicitly attributed to its manufacturer.

Primary sources

Where the specifications came from

  1. EGO manufacturer product pageChecked July 29, 2026
  2. Greenworks manufacturer product pageChecked July 29, 2026
  3. Toro manufacturer product pageChecked July 29, 2026

Manufacturer pages establish advertised specifications; they do not establish comparative performance. This launch version deliberately avoids performance scores and star ratings.