Best Gas Lawn Mower Under $500: 5 Picks Compared (2026)
Five gas push lawn mowers with cutting widths from 18 to 20 inches, 144cc engines, cutting heights, and warranties compared, plus who should skip each.
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Top picks at a glance
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- 1
Best OverallSENIX 20-Inch Gas9.7/10View on Amazon - 2
Best 3-in-1 MowerPowerSmart DB8618P9.6/10View on Amazon - 3
Best Lightweight MowerSENIX 18-Inch Gas9.5/10View on Amazon - 4
Budget Pick 20-InchBaococo 20-Inch Gas9.5/10View on Amazon - 5
Best Simple Push MowerPowerSmart EasyCut9.4/10View on Amazon - 6
SENIX Gas Lawn MowerView on Amazon - 7
SENIX 22'' Self Propelled Gas Lawn MowerView on Amazon - 8
PowerSmart 18-inch 144cc Gas Lawn MowerView on Amazon - 9
AMERISUN 21′′Gas Lawn MowerView on Amazon - 10
BILT HARD Gas Lawn Mower 20 inchView on Amazon
Finding the best gas lawn mower under $500 means focusing on dependable cutting performance, manageable weight, and durable deck construction for small residential yards. The 5 gas push mowers below feature 144cc 4-cycle engines and cutting widths of 18 and 20 inches, with deck materials, height adjustment, and warranties compared directly from manufacturer listings.
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Quick picks
- Best Overall SENIX 20-Inch Gas: Highest Acre Score here: 20 in deck, 144cc engine, and a 2-year manufacturer warranty Check price on Amazon
- Best 3-in-1 Mower PowerSmart DB8618P: 144cc OHV engine, 6 height positions, and mulch, bag, and side discharge with rear bag Check price on Amazon
- Best Lightweight Mower SENIX 18-Inch Gas: Lowest stated weight here at 37.5 lb, 18 in cut, and 144cc engine Check price on Amazon
- Budget Pick 20-Inch Baococo 20-Inch Gas: 20 in steel deck, 2-in-1 mulch and side discharge, and 144cc 4-stroke engine Check price on Amazon
- Best Simple Push Mower PowerSmart EasyCut: 18 in steel deck, 5 cutting height positions, and 8 in rear wheels Check price on Amazon
Our acreage picks
SENIX 20-Inch 144cc Gas Push Lawn Mower
Gas push mower with a 20-inch cutting deck, a 144cc 4-cycle engine, 7-inch wheels, and a stated 2-year warranty.
Who it's for: homeowners with flat yards up to 1/4 acre who want a wider 20-inch cut and a stated warranty.
Who should skip it: anyone wanting a bagging mower or self-propelled drive.
Read the full review
The SENIX 20-inch gas lawn mower pairs a 144cc 4QL 4-cycle engine with a 20-inch cutting deck and 7-inch front and rear wheels. The listing states 3 cutting height settings from 1.35 inches to 3.15 inches, a stainless steel deck, and an item weight of 39.3 pounds. It is the only mower in this group with a stated warranty, listing 2 years of manufacturer coverage. The listing does not state a slope rating.
Pros
- 2-year manufacturer warranty stated on the listing
- 20-inch cutting deck covers more ground per pass than 18-inch models
- Lightweight stated weight of 39.3 pounds for a 20-inch mower
- 144cc 4-cycle engine requires no fuel mixing
Cons
- Manual push mower with no self-propelled drive
- Limited to 3 cutting height positions from 1.35 to 3.15 inches
- Side discharge only with no collection bag included
- The listing does not state a slope rating
PowerSmart DB8618P 18-Inch 144cc 3-in-1 Gas Lawn Mower
Gas push mower with an 18-inch steel deck, a 144cc 4-stroke OHV engine, 3-in-1 mulch, bag, and side discharge, and 6 height positions.
Who it's for: homeowners with small lawns up to 1/4 acre who need to collect clippings in a bag.
Who should skip it: buyers who want a lighter mower or a stated manufacturer warranty.
Read the full review
The PowerSmart DB8618P is an 18-inch push lawn mower equipped with a 144cc 4-stroke OHV engine and an alloy steel deck. It provides 3-in-1 capability for mulching, side discharge, and rear bagging, with the grass collection bag included. The listing specifies 6 height adjustment positions, 7-inch wheels, a foldable handle, and a weight of 55 pounds. However, the listing does not state the specific cutting height range in inches or a warranty term.
Pros
- 3-in-1 cutting system supports mulching, bagging, and side discharge with rear bag included
- 6 cutting height adjustment positions
- 144cc 4-stroke OHV engine with auto choke for starting
- Foldable handle allows compact storage
Cons
- No warranty term is stated
- Heaviest mower here at 55 pounds
- The listing does not state the cutting height range in inches
- Narrower 18-inch cutting width compared to 20-inch models
SENIX LSPGL1 18-Inch 144cc Gas Push Lawn Mower
Gas push mower with an 18-inch cut, a 144cc 4-cycle engine, a 37.5-pound stated weight, and 3 height adjustment positions.
Who it's for: homeowners seeking a very light push mower for flat yards up to 1/4 acre.
Who should skip it: anyone who wants a bagging option, mulching plug, or a stated warranty.
Read the full review
The SENIX LSPGL1 is an 18-inch push mower featuring a 144cc 4-cycle engine, a steel and plastic deck, 7-inch wheels, and side discharge with a vortex tunnel. At 37.5 pounds, it has the lowest weight in this comparison. Note that the listing contains an internal contradiction: the bullets state a cutting height range from 1.2 inches to 3.15 inches across 3 positions, whereas the spec table lists a minimum adjustable cutting height of 2.16 inches. Following the listing's bullets, the height range spans 1.2 to 3.15 inches. The listing does not state a warranty term or slope rating.
Pros
- Lowest stated weight in this group at 37.5 pounds
- 144cc 4-cycle engine requires no fuel mixing
- Side discharge with vortex tunnel design spreads clippings evenly
- Compact footprint designed for 1/4-acre yards
Cons
- No warranty term is stated
- Listing contradicts itself on minimum cutting height, stating 1.2 inches in bullets and 2.16 inches in spec table
- Side discharge only with no collection bag or mulching plug
- Manual push mower with no drive system or slope rating stated
Baococo 20-Inch 144cc Gas Push Lawn Mower
Gas push mower with a 20-inch steel deck, a 144cc 4-stroke engine, and 2-in-1 side discharge and mulching.
Who it's for: buyers who want a wider 20-inch cut and mulching capability on a budget.
Who should skip it: anyone who needs a grass collection bag or a stated warranty.
Read the full review
The Baococo push mower pairs a 144cc single-cylinder 4-stroke engine with a 20-inch alloy steel cutting deck and 7-inch wheels. It provides 2-in-1 functionality for side discharge and mulching. The spec table lists adjustable cutting heights from 0.7 inches to 3.2 inches. The listing presents an internal contradiction regarding weight: the bullets state that it weighs 50 to 65 lbs, while the spec table lists an item weight of 49.8 pounds. Trusting the bullets, expect the weight to fall in the 50 to 65 lb range. The listing does not state a warranty term.
Pros
- 20-inch cutting width covers more ground than 18-inch models
- 2-in-1 functionality supports both side discharge and mulching
- 144cc 4-stroke engine requires no oil and gas mixing
- Wide cutting height range from 0.7 to 3.2 inches in the spec table
Cons
- No warranty term is stated
- Listing contradicts itself on weight, stating 50-65 lbs in bullets and 49.8 pounds in spec table
- Manual push operation with no self-propel assistance
- No grass collection bag included
PowerSmart EasyCut 18-Inch 144cc Side Discharge Gas Lawn Mower
Gas push mower with an 18-inch steel deck, a 144cc 4-stroke engine, 5 height positions, and 8-inch rear wheels.
Who it's for: homeowners who want simple side discharge mowing with taller 8-inch rear wheels.
Who should skip it: buyers who need bagging, mulching, or complete verified specifications.
Read the full review
The PowerSmart EasyCut 18-inch mower features a 144cc 4-stroke OHV engine, an 18-inch steel deck, and side discharge. It provides 5 cutting height positions ranging from 1.5 inches to 3.9 inches, with 8-inch rear and 7-inch front wheels. Notably, the listing's spec table is completely empty, leaving product weight, deck material details, and warranty unstated. No slope rating is provided.
Pros
- 5-position height adjustment spanning 1.5 to 3.9 inches
- 8-inch rear and 7-inch front wheels assist maneuvering around obstacles
- 144cc 4-stroke OHV engine with auto choke and primer structure
- Durable 18-inch steel deck built for small yards
Cons
- No warranty term is stated
- Spec table is blank and the listing does not state product weight
- Side discharge only without mulching or bagging options
- The listing does not state a slope rating
Other machines to compare
SENIX Gas Lawn MowerCheck price on Amazon
SENIX 22'' Self Propelled Gas Lawn MowerCheck price on Amazon
PowerSmart 18-inch 144cc Gas Lawn MowerCheck price on Amazon
AMERISUN 21′′Gas Lawn MowerCheck price on Amazon
BILT HARD Gas Lawn Mower 20 inchCheck price on Amazon
Side-by-side specs
| Model | Acre Score | Cutting width | Engine | Deck material | Discharge options | Weight | Warranty |
|---|---|---|---|---|---|---|---|
| SENIX 20-Inch Gas | 9.7/10 | 20 in | 144cc 4-cycle | Stainless steel | Side discharge | 39.3 lb | 2 years manufacturer |
| PowerSmart DB8618P | 9.6/10 | 18 in | 144cc 4-stroke | Alloy steel | 3-in-1 (mulch, bag, side) | 55 lb | Not stated |
| SENIX 18-Inch Gas | 9.5/10 | 18 in | 144cc 4-cycle | Steel and plastic | Side discharge | 37.5 lb | Not stated |
| Baococo 20-Inch Gas | 9.5/10 | 20 in | 144cc 4-stroke | Alloy steel, plastic | 2-in-1 (mulch, side) | 49.8 lb | Not stated |
| PowerSmart EasyCut | 9.4/10 | 18 in | 144cc 4-stroke | Steel | Side discharge | Not stated | Not stated |
Specifications are manufacturer rated as listed, collected 9 October 2026.
Acreage and terrain fit
SENIX 20-Inch Gas
PowerSmart DB8618P
SENIX 18-Inch Gas
Baococo 20-Inch Gas
PowerSmart EasyCut
Buying guide: how to choose the best gas lawn mower under $500
Cutting width: 18 inches vs 20 inches
Cutting deck width determines how much grass you cut with each pass. The models here offer either an 18-inch or 20-inch cutting deck. An 18-inch mower, such as the PowerSmart DB8618P or SENIX LSPGL1, provides a narrower profile that maneuvers smoothly through gates and between garden beds. A 20-inch deck, featured on the SENIX 20-inch mower and the Baococo mower, cuts a wider path to finish open sections of lawn in fewer passes.
Engine displacement and starting
Every model in this group is powered by a 144cc 4-cycle gas engine. Because these engines are 4-stroke designs, they take straight unleaded gasoline in the fuel tank and engine oil in a separate reservoir, eliminating fuel mixing. Starting systems on these push mowers rely on recoil pull cords. The PowerSmart listings highlight auto choke and primer setups designed to start in 1 to 2 pulls.
Discharge options: bagging, mulching, and side discharge
Discharge capability varies across these budget mowers. The PowerSmart DB8618P is the only model here that includes a rear collection bag alongside mulching and side discharge functions. The Baococo mower provides 2-in-1 capability with mulching and side discharge, returning chopped clippings to the turf. The SENIX models and the PowerSmart EasyCut focus strictly on side discharge, directing clippings out across the lawn as you walk.
Deck materials and weight
Deck construction directly impacts longevity and maneuvering effort. Steel decks are standard across these mowers, including alloy steel on the PowerSmart DB8618P and Baococo, and a stainless steel deck listed for the SENIX 20-inch mower. Mower weight ranges from a lightweight 37.5 pounds on the SENIX 18-inch push mower up to 55 pounds on the PowerSmart DB8618P. Lighter push mowers reduce operator fatigue when turning around trees and tight boundaries.
Gas push mower vs self-propelled
All five models here are manual push mowers, meaning forward motion depends entirely on operator effort. If you have flat ground up to 1/4 acre, a push mower is straightforward and mechanically simple. If your yard includes sustained slopes or heavy grass, consider stepping up to a self-propelled mower under $500 to reduce pushing effort, or explore the walk-behind and robotic mowers section for alternative drive options.
Mowing time on small yards
A walk-behind push mower with an 18-inch or 20-inch deck is built for residential yards under 1 acre. To see estimated runtimes based on deck size and walking speed, read our guide on how long it takes to mow an acre.
Always inspect the lawn and clear debris before starting. Wear eye and hearing protection while operating walk-behind mowers, keep children and pets away from the mowing area, and always shut off the engine and allow it to cool before adding fuel.
Lawn size, deck width and speed in; minutes per mow out. Or work backward from the time you want to spend.
Walk the area first and clear stones, sticks, wire and toys. Wear eye and hearing protection, long pants and sturdy closed footwear, mow across slopes with a walk-behind (not up and down), and never pull a running mower toward you. Keep kids and pets well away. Refuel only with the engine off and cool. See CPSC lawn mower safety. Read our Safety Disclaimer.
The Acre Score explained
The Acre Score weighs five factors: performance (cutting width, engine displacement, cutting height positions), build quality (deck material, wheels, overall construction), value (features for the stated specifications), safety (operator controls such as an engine stop bail), and warranty (stated term and coverage). A factor the listing does not state scores zero.
| Product | Acre Score | Perf. /35 | Build /25 | Value /25 | Safety /10 | Warranty /5 |
|---|---|---|---|---|---|---|
| SENIX 20-Inch Gas | 9.7 | 29 | 21 | 21 | n/a | 3 |
| PowerSmart DB8618P | 9.6 | 29 | 20 | 20 | n/a | 0 |
| SENIX 18-Inch Gas | 9.5 | 27 | 19 | 19 | n/a | 0 |
| Baococo 20-Inch Gas | 9.5 | 28 | 18 | 18 | n/a | 0 |
| PowerSmart EasyCut | 9.4 | 26 | 16 | 16 | n/a | 0 |
Scores run from 9.2 to 9.8: each product’s point total is placed on that range, so more points always means a higher score. Safety counts only for powered gear or where the listing states safety features; where it does not apply, the score is taken over the remaining 90 points.
FAQ: mowing large lots
Do lawn mowers use regular gas?
Yes, 4-cycle lawn mowers use fresh, unleaded regular gasoline. The 144cc engines in these mowers run on standard pump gas without added oil. Always check your engine manual for manufacturer fuel guidance and avoid fuel that has sat stale in storage.
How to start a gas lawn mower?
To start a push lawn mower, verify that the oil reservoir and fuel tank are filled. If the engine features a primer bulb or auto choke, follow the stated starting procedure, hold the operator bail lever against the handle, and pull the recoil starter cord firmly. The PowerSmart models specify easy starts in 1 to 2 pulls.
Why is my lawn mower leaking gas?
A lawn mower can leak gasoline if the carburetor float is stuck, a fuel line is cracked, a gasket is damaged, or the tank has been overfilled. Leaks can also happen if the machine is tipped onto the wrong side during maintenance, allowing fuel to spill out through the air filter or breather. Always turn off the engine and allow it to cool before inspecting fuel components.
Do I need to mix oil and gas for lawn mower?
No. All 5 lawn mowers reviewed here use 144cc 4-cycle engines. In a 4-cycle engine, straight gasoline goes into the fuel tank and motor oil goes into a dedicated crankcase. Mixing oil with gasoline is only for 2-cycle engines and will foul the spark plug and exhaust on a 4-stroke mower.
How much gas does a lawn mower hold?
The manufacturer listings for these budget gas mowers do not state exact fuel tank capacities. Compact 144cc walk-behind mowers typically feature small fuel tanks sized for residential mowing sessions on yards up to 1/4 acre. Check your operator manual for exact tank capacity specifications.
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