6 Best Gas Pressure Washers to Blast Away Grime in Seconds

Updated: Jun. 05, 2024

Find the best gas pressure washer to tackle all your heavy-duty outdoor clean-up jobs, including making your dirty driveway look brand new.

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Ryobi 15 In. 3400 Psi Gas Pressure Washer Surface Cleaner With Caster Wheels being used to clean a front walkwayVIA MERCHANT

When it’s time to take on a tough outdoor cleaning job, like washing a stained deck, dirty siding or filthy driveway, nothing works better than a gas pressure washer. These washers deliver higher water pressure than electric models—some even reaching more than 3,000 pounds per square inch (PSI)!

The best part? Using a gas pressure washer is fun! Spraying off grime with a powerful force of water is so satisfying, you’ll become hooked on finding new ways to use your pressure washer. Just keep in mind that gas washers require more water: 2 to 3 gallons per minute (GPM).

Simpson Megashot Gas Pressure Washer
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Best Overall Gas Pressure Washer

Simpson MegaShot Gas Pressure Washer


  • Powerful 3,200 PSI pump
  • Includes five quick-connect nozzles
  • Thermal relief to prevent overheating
  • Features a Honda GC190 premium residential engine


  • Louder than other models
  • Features detergent hose rather than the more convenient separate detergent container

We chose the Simpson MegaShot gas pressure washer as the best overall pressure washer because it delivers durability and power without sacrificing portability. It sprays with an impressive 3,200 PSI at 2.5 GPM—powerful enough for nearly any outdoor cleaning task.

And while it has an extremely durable welded steel frame, the compact design means it’s lightweight enough to easily transport around your property. It also features five quick-connect nozzle tips, an ergonomic spray gun and 10-inch pneumatic tires.

Simpson Powershot Gas Pressure Washer
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Best Heavy-Duty Gas Pressure Washer

Simpson PowerShot Gas Pressure Washer


  • High powered at 4,000 PSI
  • Features a premium Honda engine
  • Has PowerBoost Technology
  • Includes a 50-foot hose


  • Heavier and bulkier than other options
  • No detergent tank

If you regularly take on the toughest outdoor power washing jobs, like removing peeling paint or cleaning algae-covered walls, you need the Simpson PowerShot gas pressure washer. This beast delivers a whopping 4,000 PSI at 3.5 GPM.

The low-maintenance Honda GX270 engine means optimum performance, and the PowerBoost Technology provides higher pressure at the nozzle than other models. You’ll also reach farther with the 50-foot hose, which is twice as long as most other pressure washer hoses.

Westinghouse Wpx3200 Gas Pressure Washer
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Best Budget Gas Pressure Washer

Westinghouse WPX3200 Gas Pressure Washer


  • Affordable price
  • CARB-compliant for better air quality
  • Easy to assemble
  • Never-flat wheels
  • 8,700 Amazon ratings and a 4.7-star average


  • Higher vibration than other models
  • Certain parts get hot while in use

Even though an electric pressure washer is more eco-friendly than a gas-powered version, some gas washers are better for the environment than others. Westinghouse’s gas pressure washer is CARB-compliant, meaning the pressure washer meets current emission standards and produces fewer harmful emissions, toxins and particulates.

Best of all? It’s affordable and still delivers on power, though, offering 3,200 PSI, 2.5 GPM and a 212cc four-stroke engine. It’s easy to start, has a large fuel tank and doesn’t require extensive assembly.

Verified purchaser, Steve G. Meyer, writes in his five-star review, “Today I blasted our entire driveway, front walkway, steps and back patio, along with some siding and the hot tub lid. Simply put, this is an awesome little unit. Overall a great value.”

A Ipower Pwf2701sh 2700psi 2.3 Gpm Gas Powered Pressure Washer
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Best Quiet Gas Pressure Washer

A-iPower Gas Powered Pressure Washer


  • Has a quiet engine
  • Weighs just 56 pounds
  • Portable
  • 4 quick-connect nozzles


  • No detergent tank

The lower noise level of the A-iPower gas pressure washer means you can clean all day without listening to loud, annoying engine sounds. It’s a little smaller and more lightweight than other power washers on this list, which makes it easy to move around. It also features a folding design for simple storage and four quick-connect nozzles.

This pressure washer has a 25-foot hose, reaching messes stuck in crevices and corners of patios, decks, driveways and more. If you’re cleaning spots around your home, like your backyard or vehicle, this gas pressure washer is easy to maneuver and lift from one space to the next.

Duromax Cold Water Pressure Washer
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Best Light-Duty Gas Pressure Washer

DuroMax Cold Water Pressure Washer


  • Designed for light and medium jobs
  • Has a durable welded frame
  • Includes five quick-connect nozzles
  • Affordable


  • Features some plastic parts

This light-duty power washer is best for jobs cleaning grills, cars, windows and patio furniture without damaging the finishes. This DuroMax gas pressure washer delivers 2,700 PSI and 2.3 GPM, enough power to blast away dirt. It sports five quick-connect nozzles for versatility and a built-in detergent reservoir that delivers a steady flow of soap into the output stream.

Ryobi Gas Pressure Washer Surface Cleaner With Caster Wheels
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Best Gas Pressure Washer Attachment

Ryobi Gas Pressure Washer Surface Cleaner with Caster Wheels


  • Ideal for driveways, patios and sidewalks
  • Attaches to a standard 1/4-inch wand
  • 3 caster wheels for easy maneuvering
  • Compatible with most gas pressure washer brands
  • Affordable


  • Does not include gas pressure washer

If you’re looking to clean hard surfaces such as patios and driveways, the Ryobi Gas Pressure Washer Surface Cleaner is our top pick. This Ryobi surface cleaner is compatible with gas pressure washers up to 3,400 PSI and 2.5 GPM, so you can use it with an extremely powerful pressure washer to clean your patio space.

The 15-inch surface cleaner attachment has a quick-connect design, so you don’t have to fuss with attaching it. Plus, this time-saving accessory cleans up to five times faster than the standard nozzle that outfits most pressure washers. It has rotating, high-pressure jets that provide a streak-free clean and three wheels that allow you to easily move it from one area to the next.

What to Consider When Buying a Gas Pressure Washer

First and foremost, consider the washer’s PSI. Power washers run a pump that pressurizes the water from your garden hose to 1,000 pounds or more, then forces it out through a spray wand. The higher the pressure, the tougher the cleaning jobs it can tackle. Just don’t forget to use safety equipment (it’s a common pressure washing mistake).

Decide how much you’re willing to spend. The cost of a gas-powered pressure washer ranges from a few hundred to more than a thousand dollars, depending on the pressure they deliver, their features and the engine and pump quality.

How We Found the Best Gas Pressure Washers

We researched many gas pressure washers on the market to find the ones that consistently come out on top. We start with the research and reporting basics—what are these pressure washers best used for, how’s the engine, is it portable—to ensure that we’re only recommending the buys that are worth your time and money. Then, we research the features that speak to the product’s quality, taking advice from industry insiders and subject-matter experts on what makes a product a smart value (or worthy of a splurge). Finally, we do the work of combing through user reviews to see how real people interact with the product, and if it stands up to the test.


How do you start a gas pressure washer?

First, clean any debris from the inlet filter. Then, connect the accessories, like the garden hose and pressure wand. Run water through the washer for one minute to prime the system and remove any air. Squeeze the spray wand trigger to bleed water pressure. Finally, pull the starter cord to start the pressure washer engine and begin spraying.

What kind of gas does a pressure washer use?

Most run on regular unleaded gasoline. There’s no need to mix a gas and oil solution.

What PSI pressure washer is best for home use?

You’ll want to use a gas pressure washer with 2,000 to 3,000 PSI. It will get the job done without damaging anything. You’ll be able to clean your driveway or deck easily.