6 Best Power Assist Lawn Mowers of 2025

This cordless powerhouse redefines what’s possible in electric lawn care—delivering gas-like torque without the noise, fumes, or maintenance. At the heart of the Greenworks 80V is a brushless motor that churns out serious cutting power, effortlessly slicing through thick grass while sipping energy from its 4.0Ah battery. With a 21-inch steel deck and 4-in-1 versatility (mulch, bag, side discharge, and turbo leaf pickup), it adapts to every yard task, while LED headlights extend mowing into early mornings or twilight—ideal for busy homeowners who want maximum flexibility.

In real-world testing, this mower consistently handled a half-acre yard on a single charge, though dense, wet grass reduced runtime by about 15%. The variable-speed self-propel system is a game-changer—adjusting your pace on the fly makes navigating slopes and tight corners feel effortless, and rear-wheel drive delivers excellent traction. However, the mower does struggle slightly on steep, uneven terrain when grass is overgrown, requiring a second pass. At just 3x quieter than gas models, it’s perfect for noise-sensitive neighborhoods, but the lack of vertical storage means it takes up more garage space than some rivals.

Positioned between budget electric models and high-end hybrids, the Greenworks 80V outshines the 40V Greenworks and even challenges the premium EGO LM2102SP in raw performance—though it lacks dual batteries for extended runtime. It’s the best overall pick for mid-sized yards where reliability, power, and versatility matter most. For those already invested in the Greenworks 80V ecosystem, tool-sharing potential adds serious long-term value. In terms of performance-per-volt, it delivers more bang than the EGO, though not quite the same weather resistance or run time.

Don’t let the 40V label fool you—this compact beast punches well above its class, offering surprisingly robust performance for small to medium yards. The brushless motor delivers smooth, consistent torque, cutting cleanly through average grass with minimal strain, while the 21-inch steel deck ensures each pass covers maximum ground. What truly sets it apart is the vertical storage design, which slashes footprint by 70%—a lifesaver for tight garages or urban sheds. For eco-conscious users tired of gas fumes and oil changes, this mower is a maintenance-free dream that starts instantly with just a trigger pull.

During testing, the 5.0Ah battery powered through three-quarters of an acre under ideal conditions, though heavy, damp grass cut that down to about 45 minutes—right in line with claims. The rear-wheel self-propel handled gentle slopes with confidence, but lost some grip on wet, uneven terrain, requiring light user assistance. While it lacks LED lights and multi-battery support, the single-lever 7-position height adjustment is buttery smooth and lets you fine-tune your cut in seconds. It’s not built for thick brush or sprawling lawns, but for suburban yards under 0.5 acres, it’s impressively capable.

Compared to the 80V Greenworks, this model trades power for affordability and space savings—making it a smarter fit for casual mowers and first-time electric adopters. It’s also quieter and lighter than the PowerSmart gas models, though not as relentless on overgrown grass. While the EGO LM2102SP offers more speed control and runtime, this Greenworks 40V delivers exceptional value for budget-focused buyers who still want self-propel ease and brushless efficiency. It’s the smart entry point into electric mowing without sacrificing core functionality.

When the grass is tall, the yard is tough, and you need raw, uninterrupted power, the PowerSmart 21-inch gas mower with a Briggs & Stratton 140cc engine stands ready to dominate. This no-nonsense workhorse fires up smoothly thanks to its reliable recoil system and auto-choke, delivering consistent performance even after months in storage. The 21-inch steel deck slices efficiently across medium to large lawns, while the 3-in-1 system lets you bag, mulch, or rear-discharge with simple adjustments—no tools required. For homeowners in regions with long growing seasons or patchy power access, this gas-powered performer is a dependable backbone for seasonal lawn care.

In real-world use, the mower excels on thick, uneven terrain where electric models often stall or bog down. The 10-inch rear wheels provide excellent grip on slopes, and rear-wheel drive makes uphill mowing far less strenuous. However, it’s noticeably louder than electric alternatives and requires seasonal maintenance like oil changes and spark plug checks. Starting is generally reliable, but occasional priming is needed in cooler weather. While it lacks modern frills like LED lights or variable speed control, its 6-position single-lever height adjustment is intuitive and durable.

Compared to the Greenworks 80V, this PowerSmart model wins on continuous runtime and fuel availability—no charging anxiety, just refill and go. It’s less refined than the EGO LM2102SP and heavier than compact electrics, but for those who prioritize rugged simplicity over tech, it’s a top-tier gas option. It strikes a balance between affordability and durability, making it the best gas-powered pick for users who value long-term reliability over eco-friendly operation. In sheer cutting resilience, it outperforms budget electrics, though it demands more upkeep.

This premium electric performer sets the gold standard for cordless self-propelled mowers, blending sophisticated engineering with seamless user experience. The dual 56V 4.0Ah batteries deliver up to 65 minutes of runtime, easily covering large yards without interruption—making it a standout for power and endurance. Its variable speed self-propel system is buttery smooth, letting you dial in speeds from 0.9 to 3.1 MPH with one hand, so you can stroll comfortably while the mower does the work. With IPX4 weather resistance, it shrugs off light rain and morning dew, a rare feature in the category.

In testing, the EGO handled dense, damp grass with authority, thanks to its high-torque motor and well-balanced deck. The one-handed 6-position height adjustment is intuitive and precise, and the 2-bushel grass bag fills evenly without clogging. On slopes, traction remains solid, though the mower can feel slightly nose-heavy when bagging. Unlike most cordless models, it includes LED headlights and a rapid charger, ensuring you’re never left stranded. The only real limitation? No mulching plug included, which is surprising at this price point.

Stacked against the Greenworks 80V, the EGO offers longer runtime and smarter ergonomics, though at a higher cost. It’s lighter than the PowerSmart gas models and far quieter, yet nearly matches them in cutting aggression. While the Greenworks 40V wins on price, this EGO model is unmatched in refinement and reliability for discerning homeowners. It’s the best premium electric choice for those who want pro-level performance without gas hassles. In terms of build quality and feature density, it outclasses rivals—even if you pay for the privilege.

Perfect for small yards and tight spaces, the MightyMow 18-inch self-propelled mower delivers nimble performance with surprising power for its size. Despite running on 2x20V batteries, its brushless motor spins at up to 4200 RPM, giving it the torque needed to cut through moderate grass with ease. The self-propel speed range (2.0–4.3 ft/s) is unusually fast for its class, making it feel more like a full-sized mower while remaining ultra-maneuverable. With a compact 18-inch deck and 40L grass bag, it’s ideal for patios, narrow lots, or second mowers for weekend homes.

In real-world use, it managed up to 30 minutes of runtime on mixed terrain, which is sufficient for lawns under quarter-acre, though dense grass drained batteries faster. The 6-position single-lever height adjustment is responsive, letting you adapt from 1” to 3” quickly, though the lower max height limits use on taller grass. While it handles gentle slopes well, the smaller deck and lighter frame mean it can struggle on wet inclines without user assistance. It’s also noticeably louder than higher-voltage electrics, likely due to motor tuning.

Compared to the Greenworks 40V, it sacrifices deck width and runtime for smaller footprint and lower price, making it a better fit for compact landscapes. It doesn’t match the EGO or 80V Greenworks in power, but it offers dual batteries and dual chargers at a fraction of the cost—a strong value for minimalists. For urban yards or rental properties, it’s the best compact option where space and budget are tight. While it won’t replace a full-size mower, it delivers effortless cutting in confined areas where larger models can’t maneuver.

When you need to conquer large, overgrown lawns, the PowerSmart 22-inch gas mower with its 170cc OHV engine is built for brute-force performance. That extra 1-inch cutting width over standard 21-inch models translates to fewer passes and faster completion—ideal for acre-plus properties. The auto-choke recoil starter ensures reliable ignition every time, while the heavy-duty steel deck and blade handle thick, tangled grass without bogging down. With tool-free assembly, setup takes minutes, making it a go-to for new homeowners or seasonal rentals.

In real-world trials, this mower powered through damp, knee-high grass with ease, something most electric models would struggle with. The 1.4-bushel rear bag fills quickly but is easy to detach and empty—though frequent stops are expected on large jobs. The 6-position rear-wheel height adjustment works smoothly, though changing settings requires stopping completely. While self-propel traction is strong on flat ground, it can slip on wet, steep slopes if not guided firmly. It’s loud and emits fumes, but for uninterrupted runtime, gas still wins.

Compared to the 21-inch PowerSmart B0F29HN7PY, this model offers more engine power and a wider cut, making it better suited for larger yards despite the higher price. It lacks the 3-in-1 versatility (only bagging and mulching), which is a trade-off for simplicity. Against electric options like the Greenworks 80V, it wins on endurance and cutting aggression, though loses on noise and maintenance. It’s the best for larger yards where speed and power trump eco-friendliness. For serious mowing volume, it’s a no-nonsense powerhouse.