Five years ago, the answer was easy: gas mowers had more power, longer runtime, and lower upfront costs. Electric mowers were fine for small yards and not much else. That gap has closed dramatically. Today's 80V cordless mowers deliver gas-equivalent cutting performance, handle up to half-acre yards on a single battery, and cost less over their lifetime than gas equivalents.
This guide walks through the real tradeoffs of gas vs electric lawn mowers in 2026: power, runtime, cost of ownership, maintenance, noise, and environmental impact. Plus our recommendation for Canadian homeowners on the electric side.
The Fundamental Comparison
Before diving into specs, understand what's actually different:
- Gas mowers burn fuel to generate power. Higher torque on demand, limited runtime, constant fuel purchase, annual maintenance, emissions, noise, and mechanical complexity.
- Electric (battery) mowers use lithium-ion batteries. No fuel, no oil, minimal maintenance, quiet operation, unlimited runtime but higher upfront cost.
Modern high-voltage electric mowers (60V, 80V) have closed the power gap that used to exist between gas and electric. The remaining differences are runtime, upfront cost, and maintenance economics.
Power and Cutting Performance
| Gas Mower (typical) | 80V Electric Mower | |
|---|---|---|
| Engine/motor | 150–190cc gas | Brushless electric equivalent to ~170cc gas |
| Deck size | 21" standard | 21" standard |
| Cut in thick grass | Excellent | Excellent — matches gas |
| Cut in wet grass | Struggles less | Handles with brushless torque |
| Torque under load | Sustained | Instant torque delivery |
| Blade RPM | ~3,300 RPM | ~3,300 RPM |
For residential mowing, cutting performance is now essentially equivalent between quality gas mowers and 80V electric mowers. The old "electric is underpowered" complaint applied to 40V and lower cordless systems. 80V changed the equation — real-world cutting performance is comparable across the two categories.
For residential mowing sessions of 30 minutes to 2 hours, 80V electric matches gas without compromise.
Runtime — The Remaining Real Difference
Here's where gas still has a structural advantage: unlimited runtime as long as you have fuel. Electric mowers are constrained by battery capacity.
| Yard Size | Gas Mower | 80V Single Battery | 80V Dual Battery |
|---|---|---|---|
| Up to 1/4 acre | Fine | Fine | Overkill |
| 1/4 – 1/2 acre | Fine | Fine (single charge) | Fine |
| 1/2 – 3/4 acre | Fine | May need swap | Fine |
| 3/4 acre – 1 acre | Fine | Requires spare battery | Fine |
| Over 1 acre | Preferred | Impractical | Multiple batteries needed |
For Canadian yards up to half an acre — which covers the vast majority of residential properties — 80V electric handles the entire yard on a single charge. For larger properties, you either buy a dual-battery mower or keep a spare battery on the charger.
The gas advantage only becomes meaningful on properties over 1 acre where continuous multi-hour mowing is required.
Cost of Ownership — The Full Picture
Upfront costs favour gas. Lifetime costs favour electric. The full math:
| Cost Category | Gas Mower | 80V Electric Mower |
|---|---|---|
| Purchase price (21" SP) | $400–$700 | $700–$1,000 |
| Fuel (10-year, mowing bi-weekly) | ~$500 (Canadian gas prices) | ~$50 (electricity to charge) |
| Oil changes (10-year) | ~$150 | $0 |
| Spark plugs / air filters | ~$80 | $0 |
| Blade sharpening/replacement | ~$100 | ~$100 (same) |
| Winter storage prep (fuel stabilizer) | ~$50 | $0 |
| 10-year total cost | $1,180–$1,580 | $850–$1,150 |
Over a decade, electric and gas mowers cost roughly the same total. Gas is cheaper upfront; electric is cheaper to operate. If your mower lasts longer than 10 years (many do), electric's lifetime advantage grows meaningfully — no engine wear-out to worry about.
Maintenance — Where Electric Actually Wins
This is where the gap is real, not marginal:
- Gas mower annual maintenance: Oil change, air filter check, spark plug inspection, fuel stabilizer before winter storage, carburetor cleaning if it sat with untreated fuel. 1–3 hours per year.
- Electric mower annual maintenance: Sharpen or replace the blade. Check the deck for debris. 15 minutes per year.
No fuel storage. No carburetor problems from ethanol-blended fuel sitting through Canadian winters (a genuine issue in this climate). No pull-cord frustration on cold spring mornings. No trips to the gas station.
For most homeowners, this maintenance difference alone justifies the electric switch. Yard work should be mowing, not tune-ups.
Noise — A Meaningful Quality-of-Life Difference
Sound levels for typical residential mowers:
- Gas mower: 90–100 dB — loud enough to require hearing protection and to bother neighbours on quiet residential streets.
- 80V electric mower: 75–85 dB — noticeably quieter, doesn't require hearing protection for typical use.
The difference is enormous in practical terms. A gas mower running next door interrupts conversations, disturbs young children napping, and is a source of complaints on quiet residential streets — especially early Saturday mornings. An electric mower is closer to background conversation volume — you can mow at 8 AM without triggering a neighbourly complaint.
Some Canadian municipalities have noise bylaws restricting when gas-powered outdoor equipment can be operated. Electric mowers fall well below most bylaw thresholds. If you mow before 9 AM or after 8 PM, this can matter.
Environmental Impact
Straightforward:
- Gas mowers produce direct emissions — a small gas mower running for one hour produces roughly the same emissions as driving a car 100 miles. Fuel spills contaminate soil.
- Electric mowers have zero direct emissions. Total lifecycle emissions depend on your local electricity mix, but in most of Canada — where hydro, nuclear, and increasingly renewable sources dominate — total emissions are dramatically lower.
For Canadian buyers who care about environmental impact, electric is clearly the better choice. Not marginal — meaningful.
The Best 80V Electric Mower for the Switch
For Canadian homeowners making the switch from gas — quarter-acre to half-acre yards, typical residential mowing needs, ready for lower maintenance and quieter operation — the Greenworks 80V 21" Self-Propelled Lawn Mower (4.0Ah battery) is built for this transition:
| Spec | Greenworks 80V 21" Self-Propelled |
|---|---|
| Deck size | 21" (standard residential) |
| Motor | 80V brushless, ~170cc gas-equivalent |
| Drive | Self-propelled, variable speed |
| Cutting area per charge | ~½ acre on 4.0Ah battery |
| Battery included | 4.0Ah 80V |
| Charger included | Rapid charger |
| 3-in-1 (bag/mulch/discharge) | Yes |
| Deck material | Heavy-gauge steel |
| Warranty | 4 years tool + battery |
| Compatible tools on platform | 75+ |
Real-world switching advantages:
No spring startup ritual. No fuel stabilizer to add in fall, no fresh gas to buy in spring, no pull-cord to yank. Charge the battery, mow.
Half-acre single-charge runtime. Covers the vast majority of residential Canadian yards on one battery. Larger yards can add a second battery or upgrade to the dual-battery version.
Quiet enough for early mornings. Mow before 9 AM without triggering neighbourly complaints or bylaw issues.
4-year warranty on both tool and battery. Longer than most gas mower warranties.
Part of the 80V POWERALL ecosystem. Same battery works with 75+ Greenworks 80V outdoor tools — trimmers, blowers, chainsaws, hedge trimmers, pressure washers. Adding future tools doesn't require new batteries.
Making the Switch — What to Expect
Practical adjustments if you're moving from gas to electric:
- Charge the battery the night before you mow. Rapid charger takes about an hour for a partial charge, longer for full. Habit becomes routine.
- Store the battery indoors during winter. Canadian winter cold reduces battery life if stored outside. A shelf in the garage is fine; unheated shed is not.
- Sharpen the blade twice a season. Same as gas. Sharp blade = cleaner cuts and longer battery runtime per session.
- Sell your gas mower. Working gas mowers hold decent used value — recover some of the electric upfront cost.
FAQ
Does an 80V electric mower really cut as well as gas?
Yes, for residential use. 80V brushless motors deliver torque comparable to typical 150–170cc gas mowers. Real-world cutting through normal grass, moderate thick grass, and even slightly damp grass is comparable. The old "electric is weak" complaint applied to earlier 20V–40V tools; 80V changed the equation.
How long do the batteries actually last?
A quality 80V battery holds meaningful capacity for 6–8 years of typical residential use, then declines. Replacement batteries are available and cost roughly the same as major maintenance on a gas engine over the same period.
What happens if I run out of battery mid-lawn?
The mower stops. You either wait for the battery to charge (~60 minutes rapid), swap in a second battery if you own one, or finish the yard later. Single-battery mowers cover most Canadian yards on one charge — the "running out" scenario is rare for typical residential use.
Can I mow in wet grass with an electric mower?
Yes, though damp grass is easier than fully wet grass on any mower type. 80V brushless motors handle wet conditions well. Just don't submerge the tool or leave it out in rain.
Is an electric mower worth the higher upfront cost?
Over a 10-year ownership window, yes — lower operating costs offset the higher purchase price, plus reduced maintenance time and quieter operation. If you're only planning to keep the mower 3–5 years, gas may still be cheaper total cost.
What about corded electric mowers?
They exist but are impractical for most residential yards — you're dragging an extension cord constantly. Cordless (battery) mowers eliminate that limitation while retaining the electric advantages.
The Right Electric Mower for Canadian Homeowners
If your yard is quarter-acre to half-acre, you're tired of spring startup rituals and small engine maintenance, and you want equivalent cutting performance with dramatically less hassle — the Greenworks 80V 21" Self-Propelled Lawn Mower is built for exactly this transition. 21" cutting deck, brushless motor with gas-equivalent power, self-propelled variable speed, half-acre single-charge runtime, 3-in-1 mulching/bagging/discharge, and 4-year warranty coverage.
Keep reading:
- One Battery System Saves You Money — The Greenworks Ecosystem — Why staying inside one battery platform saves Canadian homeowners hundreds.
- How Long Does a Battery Lawn Mower Last? — Real-world battery lifespan and replacement expectations.
- How to Mow Your Lawn Like a Pro: 10 Essential Tips — Getting the best cut regardless of which mower you buy.
- Greenworks Lawn Mower Review — Every Model for 2026 — Full lineup review across the entire 80V platform.