5 Best Gas Lawn Mowers 2025

Are you tired of struggling with a lawn mower that just can’t handle your yard? A quality gas lawn mower makes the difference between dreading yard work and actually enjoying it. After testing dozens of models and researching countless customer experiences, we’ve put together this comprehensive guide to help you find the best gas lawn mowers for your needs.

Gas lawn mowers remain popular choices for homeowners who need reliable power, extended runtime, and the ability to tackle tough grass conditions. They don’t require charging, work well on wet grass, and can handle larger yards with ease.

In this guide, we’ll examine the top gas lawn mowers of 2025, breaking down their features, performance, and value to help you make an informed decision.

Quick Summary: Our Top Picks

Model	Best For	Engine	Cutting Width	Special Features
PowerSmart 18-Inch Push Mower	Budget-conscious buyers	144cc	18 inches	3-in-1 functionality, oil included
YARDMAX 22-inch Self-Propelled	Versatility and control	201cc	22 inches	6-speed CVT, high wheels, RWD
AMERISUN 21-inch Steel Deck	Durability	144cc	21 inches	6-position height adjustment, large grass catcher
PowerSmart 22-inch Self-Propelled	Larger yards	170cc OHV	22 inches	3-in-1 capability, rear-wheel drive
AMERISUN 21-inch Gas Mower	Simplicity	144cc	21 inches	2-in-1 functionality, foldable handles

Understanding Gas Lawn Mower Types

Before diving into specific models, let’s explore the different types of gas lawn mowers available:

Push Mowers: You provide all the propulsion power. These are typically lighter, less expensive, and ideal for smaller, flat yards.

Self-Propelled Mowers: Feature drive systems that move the mower forward, requiring less physical effort. They come in three drive types:

• Front-wheel drive (FWD): Better for flat terrain
• Rear-wheel drive (RWD): Superior traction for hills and rough terrain
• All-wheel drive (AWD): Maximum traction for varied or challenging landscapes

Cutting Systems: Gas mowers generally offer three disposal options:

• Mulching: Cuts grass into fine particles that decompose as lawn fertilizer
• Bagging: Collects clippings in an attached bag
• Side-discharge: Expels clippings to the side of the mower

Many modern mowers offer “3-in-1” capability, letting you switch between these options.

Now let’s examine our top picks in detail.

1. PowerSmart 18-Inch Gas Push Lawn Mower

Key Features:

• 144cc gas engine
• 18-inch cutting deck
• 3-in-1 functionality (mulch, bag, side-discharge)
• 5 cutting height positions
• Includes oil
• Compact design
• 16.3 gallons collection bag

Performance Analysis

The PowerSmart 18-inch push mower balances affordability with solid performance. The 144cc engine provides enough power for most residential lawns while remaining fuel-efficient. During testing, it started reliably with the pull cord system, typically within 1-2 pulls when properly maintained.

The 18-inch cutting width strikes a good balance – wide enough to reduce your mowing time but narrow enough to navigate around obstacles and tight spaces. This makes it particularly well-suited for small to medium yards with gardens, trees, or other landscaping features.

Height adjustment ranges from 1.18 to 3.0 inches, giving you flexibility for different grass types and seasons. The adjustment mechanism uses a 5-position lever that’s reasonably easy to operate.

Who Should Buy This

This PowerSmart model is ideal for homeowners with smaller yards (up to 1/4 acre) who want a reliable gas mower without breaking the bank. It’s particularly good for:

• Budget-conscious buyers
• Those with limited storage space
• Homeowners with relatively flat yards
• People who prefer a lightweight option (weighs about 58 pounds)

The included oil adds value for first-time mower owners. While it lacks self-propulsion, the relatively light weight makes it manageable for most users on flat terrain.

Potential Drawbacks

The 18-inch deck width means more passes for larger lawns, potentially adding time to your mowing session. Some users report the collection bag could be larger, requiring more frequent emptying. The mower also lacks some premium features like electric start or enhanced ergonomics.

2. YARDMAX 22-inch Self-Propelled Lawn Mower

Key Features:

• 201cc engine
• 22-inch cutting deck
• Select PACE 6-speed CVT transmission
• High wheels for improved maneuverability
• Rear-wheel drive
• 3-in-1 capability (mulch, bag, side-discharge)
• 7 cutting height positions
• Cushioned ergonomic handle

Performance Analysis

The YARDMAX stands out with its powerful 201cc engine, which provides excellent cutting power even in thick or wet grass. The substantial engine size translates to better torque, which helps the mower maintain consistent blade speed under load.

The rear-wheel drive system delivers superior traction, especially on slopes or uneven terrain. Combined with the high wheels, this makes the YARDMAX surprisingly agile despite its robust build. The Select PACE 6-speed continuously variable transmission (CVT) allows you to precisely match the mower’s pace to your walking speed and lawn conditions.

The 22-inch cutting width reduces mowing time significantly compared to smaller decks. In our tests, the mower handled thick spring growth and fall leaf mulching equally well, thanks to its powerful engine and well-designed deck.

Height adjustment ranges from 1.25 to 3.75 inches across 7 positions, giving you exceptional versatility for different grass types and conditions. The adjustment mechanism is smooth and requires moderate effort to change.

Who Should Buy This

The YARDMAX is perfect for homeowners with medium to large yards (up to 1/2 acre) who want excellent performance and comfort features. It’s particularly suited for:

• Properties with slopes or uneven terrain
• Users who mow in varied conditions
• Those who want precise speed control
• Homeowners looking for a durable, long-term investment

The RWD system and high wheels make this mower much easier to handle on challenging terrain than push models or FWD alternatives.

Potential Drawbacks

At approximately 85 pounds, this is a substantial machine. While the self-propulsion handles most of the work, maneuvering around tight spaces or storing the mower might be challenging for some users. The premium features also come with a higher price tag than basic models.

3. AMERISUN 21-inch Steel Deck Gas Lawn Mower

Key Features:

• 144cc 4-stroke engine
• 21-inch steel deck
• 3-in-1 functionality
• 6-position height adjustment
• 1.4 bushel grass catcher
• Push operation

Performance Analysis

The AMERISUN 21-inch mower’s standout feature is its durable steel deck, which gives it exceptional longevity compared to plastic or composite alternatives. The 144cc engine provides adequate power for regular residential mowing, handling standard grass conditions with ease.

The 21-inch cutting width offers a good compromise between the narrower 18-inch models and wider 22-inch options. This makes it versatile enough for most yard sizes while remaining maneuverable around obstacles.

The large 1.4 bushel grass catcher reduces emptying frequency, a convenient feature for larger properties. During testing, the bag attachment mechanism was secure, and the bag filled evenly without frequent clogging.

Height adjustment ranges from 1.18 to 3.0 inches across 6 positions, giving good versatility for different grass types. The adjustment mechanism uses a lever system that requires moderate effort but provides reliable positioning.

Who Should Buy This

The AMERISUN steel deck mower is ideal for homeowners prioritizing durability and longevity. It’s particularly well-suited for:

• Those planning to keep their mower for many years
• Users with average-sized lawns (1/4 to 1/3 acre)
• Homeowners who regularly bag their clippings
• People who want quality construction at a reasonable price

The steel construction makes this mower slightly heavier than some comparable models with plastic decks, but the added durability is worth considering, especially if you plan to use your mower for many seasons.

Potential Drawbacks

As a push mower, the AMERISUN requires more physical effort than self-propelled alternatives, especially on inclines or larger properties. Some users report the pull-start requires a firm tug, which might be challenging for some individuals. The steel deck, while durable, adds weight to the unit.

4. PowerSmart 22-inch Self-Propelled Gas Lawn Mower

Key Features:

• 170cc OHV engine
• 22-inch cutting deck
• Self-propelled (rear-wheel drive)
• 3-in-1 functionality
• 5 cutting height positions
• High wheels for better maneuverability

Performance Analysis

The PowerSmart 22-inch self-propelled model delivers excellent cutting performance with its 170cc overhead valve (OHV) engine. OHV engines typically run cooler and more efficiently than side-valve alternatives, translating to better fuel economy and longer engine life.

The rear-wheel drive system provides reliable propulsion, even on slopes up to 15 degrees. During testing, the mower maintained consistent forward motion without requiring additional pushing force from the operator.

The 22-inch cutting deck significantly reduces mowing time compared to narrower models, making this a good choice for larger yards. The deck design efficiently directs clippings whether you’re mulching, bagging, or using the side discharge.

Height adjustment ranges from 1.2 to 3.5 inches across 5 positions, covering most residential mowing needs. The adjustment mechanism uses a lever system that’s intuitive and requires moderate effort to change.

Who Should Buy This

This PowerSmart model hits the sweet spot for many homeowners, balancing features, performance, and price. It’s especially well-suited for:

• Medium to large yards (up to 1/2 acre)
• Properties with some slopes or uneven terrain
• Users who prefer not to push the mower manually
• Those wanting a wider cutting path to reduce mowing time

The combination of self-propulsion, a powerful OHV engine, and wide cutting deck makes this an excellent all-around performer for most residential applications.

Potential Drawbacks

At approximately 83 pounds, this is a substantial machine, which might affect storage and transportation. Some users report the bagging system could be improved for better capacity and easier emptying. The price is higher than push mowers, though reasonable for a self-propelled model with these features.

5. AMERISUN 21-inch 2-in-1 Gas Lawn Mower

Key Features:

• 144cc engine
• 21-inch cutting deck
• 2-in-1 functionality (mulch and side discharge)
• 6-position height adjustment
• Foldable handles for storage
• Push operation

Performance Analysis

The AMERISUN 21-inch 2-in-1 model focuses on simplicity and core functionality. The 144cc engine provides sufficient power for regular residential mowing tasks, starting reliably with the recoil system during our tests.

Unlike the 3-in-1 models, this mower specializes in mulching and side discharge, without a bagging option. This streamlined approach results in a simpler, lighter machine that excels at its designated functions. The mulching performance was particularly impressive, finely chopping grass clippings to accelerate decomposition.

The 21-inch cutting width balances efficiency and maneuverability, while the 6-position height adjustment system offers flexibility for different grass conditions. We found the height adjustment lever smooth and easy to operate.

One standout feature is the foldable handle design, which significantly reduces the storage footprint – a valuable benefit for those with limited garage or shed space.

Who Should Buy This

This AMERISUN model is ideal for homeowners who primarily mulch their clippings or use side discharge. It’s particularly well-suited for:

• Those with limited storage space
• Users who prefer mulching for lawn health
• Homeowners with small to medium yards
• Budget-conscious buyers who don’t need bagging functionality

If you’re looking for a straightforward, reliable mower without extra features you won’t use, this model offers good value.

Potential Drawbacks

The lack of bagging capability might be limiting for some users, especially during peak growing seasons or in regions with strict regulations about grass clippings. As a push mower, it requires more physical effort than self-propelled alternatives, particularly on larger or hilly properties.

Key Factors to Consider When Buying a Gas Lawn Mower

Engine Power and Type

Gas mower engines typically range from 140cc to 200cc. Higher numbers indicate more power, which is beneficial for tough cutting conditions like tall, thick, or wet grass. However, more powerful engines tend to use more fuel and produce more noise.

Engine Types:

• 4-Stroke Engines: Most modern mowers use 4-stroke engines that require separate oil and gas (not mixed together). They run cleaner and quieter than 2-stroke engines.
• OHV (Overhead Valve): Provides better fuel efficiency, runs cooler, and typically lasts longer than traditional side-valve engines.

Cutting Width

The cutting width determines how many passes you’ll need to cover your lawn:

• 18-20 inches: Ideal for small yards or areas with many obstacles
• 21-22 inches: Good all-purpose size for most residential properties
• 23+ inches: Best for larger, open yards with fewer obstacles

Remember that wider decks make the mower less maneuverable in tight spaces.

Drive System

• Push mowers: You provide all the power to move the mower forward
• Self-propelled mowers: The engine powers the wheels, reducing physical effort
  • Front-wheel drive: Better for flat yards and making turns
  • Rear-wheel drive: Superior for slopes and uneven terrain
  • All-wheel drive: Maximum traction for challenging conditions

Cutting Height Range and Adjustment

Most quality mowers offer multiple cutting heights, typically between 1-4 inches. Look for:

• Multiple positions: Good mowers offer at least 5 height settings
• Easy adjustment: Single lever adjustment is more convenient than adjusting each wheel
• Range: Ensure the mower can cut at your preferred height for your grass type

Starting Mechanism

• Pull cord/recoil start: Traditional starting method requiring physical effort
• Electric start: Push-button convenience, often with a backup recoil starter
• Auto-choke: Simplifies the starting process by automatically adjusting the engine’s fuel intake

Discharge Options

• Mulching: Cuts clippings into fine pieces that decompose and fertilize your lawn
• Bagging: Collects clippings in an attached bag for disposal
• Side discharge: Expels clippings to the side of the mower
• 3-in-1 capability: Offers all three options for maximum flexibility

Deck Material

• Steel: Durable but heavier and can rust if not properly maintained
• Aluminum: Lightweight and rust-resistant but typically more expensive
• Composite/plastic: Lightweight and rust-proof but less durable against impacts

Weight and Maneuverability

Gas mowers typically weigh between 60-90 pounds. Consider:

• Your physical ability to maneuver the mower
• Storage and transportation requirements
• Wheel size (larger rear wheels often improve maneuverability)

Maintenance Requirements

All gas mowers need regular maintenance:

• Oil changes (typically every 25-50 hours of operation)
• Air filter cleaning/replacement
• Spark plug inspection/replacement
• Blade sharpening
• Fuel stabilizer for seasonal storage

Consider the accessibility of maintenance points and availability of parts when choosing a mower.

Gas vs. Electric: Which Is Right for You?

While this guide focuses on gas mowers, it’s worth considering whether a gas mower is truly the best choice for your situation.

Choose Gas If:

• Your yard is larger than 1/4 acre
• You frequently cut tall or wet grass
• You need extended runtime without interruption
• You don’t have convenient access to electrical outlets
• You prefer maximum power and don’t mind maintenance

Consider Electric If:

• Your yard is smaller than 1/4 acre
• You value quiet operation
• You prefer minimal maintenance
• Environmental concerns or local regulations are important factors
• You want lower operating costs over time

Lawn Mower Maintenance Tips

Proper maintenance extends your mower’s life and ensures optimal performance:

Regular Maintenance Tasks:

1. Change the oil after approximately 25-50 hours of use
2. Clean or replace the air filter every 25 hours of operation
3. Check the spark plug annually and replace if needed
4. Sharpen the blade twice per mowing season for clean cuts
5. Clean under the deck after each use to prevent rust and clumping
6. Use fuel stabilizer when storing for more than 30 days
7. Inspect belts and cables for wear and proper tension

Seasonal Storage:

1. Run the engine until it stops to use all fuel in the system
2. Remove the spark plug and add a small amount of oil to the cylinder
3. Clean the entire mower, especially under the deck
4. Store in a dry location away from potential ignition sources
5. Consider a cover if stored outdoors

Frequently Asked Questions

Q: How long do gas lawn mowers typically last? A: With proper maintenance, a quality gas mower should last 8-10 years for residential use. Premium models can last 15+ years with excellent care.

Q: How often should I change the oil in my gas mower? A: Change the oil after the first 5 hours of operation for a new mower, then every 25-50 hours of use or annually, whichever comes first.

Q: Is it OK to use regular gas in my lawn mower? A: Most modern mowers run best on fresh, unleaded gasoline with an octane rating of 87 or higher. Avoid using gas with more than 10% ethanol content unless specified by the manufacturer.

Q: How high should I cut my grass? A: The ideal cutting height depends on your grass type, but most lawn experts recommend keeping cool-season grasses at 2.5-3.5 inches and warm-season grasses at 1.5-2.5 inches. Never remove more than 1/3 of the grass blade length in a single mowing.

Q: Can I mow wet grass with a gas mower? A: While gas mowers handle wet grass better than electric models, it’s still not ideal. Wet mowing can cause clumping, uneven cuts, and increased strain on the engine. If you must mow wet grass, slow your pace and clean under the deck immediately afterward.

Q: How do I know when it’s time to replace my mower? A: Consider replacement when repair costs approach 50% of a new mower’s value, when parts become difficult to find, or when persistent problems affect performance despite maintenance.

Final Verdict: The Best Gas Lawn Mower for Most People

After thorough testing and evaluation, the PowerSmart 22-inch Self-Propelled Gas Lawn Mower emerges as the best all-around choice for most homeowners. Its combination of powerful OHV engine, self-propelled drive system, and versatile 3-in-1 capabilities address the needs of most residential properties.

For those with smaller yards or budget constraints, the PowerSmart 18-inch Push Mower offers excellent value and reliable performance in a more compact package.

Users with challenging terrain should strongly consider the YARDMAX 22-inch Self-Propelled Mower with its robust rear-wheel drive system and adjustable speed control.

Each of these mowers represents the best in its class, providing reliable cutting performance that will keep your lawn looking its best season after season.

Our Testing Methodology

To ensure objective recommendations, we evaluated each mower through a comprehensive testing process:

1. Initial assembly and setup: Evaluating clarity of instructions and ease of assembly
2. Starting reliability: Testing cold and warm starts across multiple sessions
3. Cutting performance: Assessing quality of cut in various grass conditions
4. Mulching efficiency: Measuring how finely clippings are cut and distributed
5. Bagging capacity and efficiency: Testing how well clippings are collected and how easily bags are emptied
6. Maneuverability: Evaluating handling around obstacles and on different terrains
7. Noise levels: Measuring decibel output during operation
8. Vibration: Assessing operator comfort during extended use
9. Height adjustment: Testing ease of changing cutting heights
10. Durability assessment: Examining construction quality and potential wear points

This rigorous evaluation process ensures our recommendations reflect real-world performance rather than just technical specifications.

Choose the mower that best suits your specific needs, lawn size, and terrain, and you’ll enjoy a well-maintained lawn with less effort and frustration. Happy mowing!