Best Gas Powered Power Washer (2026): 5 Picks Compared

A driveway covered in grime, siding streaked after a wet season, and a car that needs a proper wash before a weekend of detailing all point to the same gap in the garage: a washer that can move enough water to shift stuck dirt without a cord holding it back. The best gas powered power washer fills that gap, and this roundup compares five gas washers by PSI, flow, engine, pump, hose, nozzles and warranty.

GarageToolHQ earns a commission when you buy through links on this page, at no extra cost to you. Read our affiliate disclosure.

Picks for the garage

#	Product	Shop Score	Buy
1	Professional 4200PSI 4GPM 212CC Gas Pressure	9.7/10	Buy on Amazon
2	Professional 4200PSI 4GPM 212CC Gas Pressure	9.6/10	Buy on Amazon
3	Simpson Clean Machine 3400 PSI Gas Pressure Washer	9.6/10	Buy on Amazon
4	4200 PSI Gas Pressure Washer	9.6/10	Buy on Amazon
5	Simpson PowerShot 3300 PSI Gas Pressure Washer	9.5/10	Buy on Amazon

1

Professional 4200PSI 4GPM 212CC Gas Pressure

IvyBess·9.7/10 Shop Score

i

The Shop Score runs from 9.2 to 9.8 and weighs performance (35%), build (25%), value (25%), safety (10%, where it applies) and warranty (5%), using only what the manufacturer and the listing publish. How we pick ›

A 4200 PSI, 4 GPM gas pressure washer with a 212 cc engine, 7 HP, 3600 RPM, a 25 ft hose reel, 9 in wheels and a 1000ML foam bottle.

Check price on Amazon

Pros

• 4200 PSI and 4 GPM for driveways, fencing and siding
• 25 ft hose on a reel keeps the hose tidy between jobs
• 1000ML foam bottle included for washing cars
• ETL compliance stated, with a trigger safety lock

Cons

• No warranty term is stated
• Shares most of its listing text with the IvyBess BGreen
• 212 cc engine size is given without a named engine brand
• 66.0 lb, so it needs a clear path to the job

2

Professional 4200PSI 4GPM 212CC Gas Pressure

IvyBess·9.6/10 Shop Score

i

The Shop Score runs from 9.2 to 9.8 and weighs performance (35%), build (25%), value (25%), safety (10%, where it applies) and warranty (5%), using only what the manufacturer and the listing publish. How we pick ›

A 4200 PSI, 4 GPM gas pressure washer with a 212 cc engine, 7.0 HP, 3600 RPM, a 25 ft hose, 9 in wheels and a 1000ML foam bottle.

Check price on Amazon

Pros

• 4200 PSI and 4 GPM for driveways, fencing and siding
• 1000ML foam bottle included for washing cars
• ETL compliance stated, with a trigger safety lock
• Starting steps spelled out in the listing

Cons

• No warranty term is stated
• No hose reel, unlike the IvyBess hose reel model
• 212 cc engine size is given without a named engine brand
• 66.0 lb, so it needs a clear path to the job

3

Simpson Clean Machine 3400 PSI Gas Pressure Washer

SIMPSON·9.6/10 Shop Score

i

The Shop Score runs from 9.2 to 9.8 and weighs performance (35%), build (25%), value (25%), safety (10%, where it applies) and warranty (5%), using only what the manufacturer and the listing publish. How we pick ›

A 3400 PSI, 2.5 GPM gas pressure washer with a 208 cc CRX engine, an axial cam pump, a 25 ft hose and a 15 in surface cleaner.

Check price on Amazon

Pros

• 15 in surface cleaner included for driveways and sidewalks
• 3400 PSI and 2.5 GPM with a 208 cc CRX engine
• Frame warranty of 5 years, pump 1 year, engine 2 years
• 10 in pneumatic tires roll over gravel, grass and curbs

Cons

• Only four quick-connect tips, with no 25 degree tip
• No ETL or other safety listing is stated
• 64 lb, so it needs a clear path to the job
• Surface cleaner adds bulk: 37 in long, 30 in wide, 21 in high

4

4200 PSI Gas Pressure Washer

Steupoek·9.6/10 Shop Score

i

The Shop Score runs from 9.2 to 9.8 and weighs performance (35%), build (25%), value (25%), safety (10%, where it applies) and warranty (5%), using only what the manufacturer and the listing publish. How we pick ›

A 4200 PSI, 4.0 GPM gas pressure washer with a 7 HP, 212 cc engine, an axial cam pump, a 25 ft hose and a 1L soap tank.

Check price on Amazon

Pros

• 4200 PSI and 4.0 GPM for driveways, siding and paint prep
• 1L soap tank with an adjustable switch
• 25 ft steel-braided hose, non-marring and kink-resistant
• ETL compliance stated, with CARB compliance

Cons

• No warranty term is stated
• The bullet says five nozzles, then names 0, 15, 25, 40 and 60 degree tips plus soap
• No hose reel or foam bottle is stated
• 66.0 lb, so it needs a clear path to the job

5

Simpson PowerShot 3300 PSI Gas Pressure Washer

SIMPSON·9.5/10 Shop Score

i

The Shop Score runs from 9.2 to 9.8 and weighs performance (35%), build (25%), value (25%), safety (10%, where it applies) and warranty (5%), using only what the manufacturer and the listing publish. How we pick ›

A 3300 PSI, 2.5 GPM gas pressure washer with a Honda GX200 engine, an AAA triplex plunger pump, a 25 ft MorFlex hose and five nozzles.

Check price on Amazon

Pros

• Honda GX200 engine with low-oil shutdown
• AAA triplex plunger pump with unloader and thermal relief
• Five quick-connect tips from 0 to 40 degrees plus soap
• 10 in pneumatic tires and a welded steel frame

Cons

• No warranty: the spec table states No Warranty
• Weight contradicts itself: 77 lb in the bullets, 74.8 lb in the spec table
• Lowest stated PSI and flow here: 3300 PSI and 2.5 GPM
• No ETL or other safety listing is stated

Compared on paper

Specs such as CFM, PSI and torque are the manufacturer’s ratings as listed, collected 13 November 2026. Where a listing contradicts itself, both figures are shown.

How the points were given

Each washer is scored out of 10 on performance, build, value, safety and warranty, with the weights published on our How We Pick page. The washers that state ETL compliance score on safety, and one states a clear warranty term.

Shop Scores range from a low of 9.2 to a high of 9.8, with each tool positioned by its weighted points proportionally, and more points always yields a higher score.

What the listings tell you

Every listing here states a maximum PSI and a flow rate, and every one gives a hose length. The Simpson listings name a specific engine and pump, while the other listings give an engine size in cc and a horsepower figure. ETL compliance is stated on some listings and not on others.

Buying guide: best gas powered power washer for the home garage

PSI and flow

Maximum PSI sets the peak pressure and GPM sets the flow, and the listings here pair 3300 PSI with 2.5 GPM at the low end and 4200 PSI with 4 GPM at the high end. A higher flow rate moves more water across a driveway, while a lower flow rate suits car washing.

Engine and pump

The Simpson PowerShot lists a Honda GX200 engine with an AAA triplex plunger pump, and the Simpson Clean Machine lists a 208 cc CRX engine with an axial cam pump. The other listings give a 212 cc engine and 7 HP with an axial cam pump.

Hose, nozzles and soap

Every washer here ships with a 25 ft hose, so reach is the same across the picks. Nozzle sets run from a 0 degree tip to a 40 degree tip and a soap nozzle, and one listing adds a 60 degree tip. The Steupoek lists a 1L soap tank, while the IvyBess washers list a 1000ML foam bottle.

Wheels and frame

The Simpson washers roll on 10 in premium pneumatic tires over gravel, grass and curbs, while the IvyBess washers use 9 in wheels and the Steupoek lists never-flat wheels. Weight runs from 64 lb for the Simpson Clean Machine to 77 lb in the bullets for the Simpson PowerShot.

Starting and safety

Every washer here starts with a recoil rope. The IvyBess listings lay out the steps: pour gasoline, pull the trigger to exhaust the air, turn on the engine switch, open the fuel valve, close the choke lever, then pull the recoil rope. If the first start fails, wait 2 minutes and try again. Wear eye protection.

Garage Fit Check

• Measure the spot first: the Simpson Clean Machine measures 37 in long, 30 in wide and 21 in high.
• Plan for weight: the picks run from 64 lb to 77 lb.
• Keep 25 ft of hose reach in mind when parking the washer.
• Gas washers need fresh air: run them outside, never in a closed garage.
• Check the soap setup before the first wash: a 1L soap tank on one pick, a 1000ML foam bottle on the IvyBess washers, and a 15 in surface cleaner on one more.

FAQ: garage tools

How do you use a gas pressure washer?

Connect the garden hose and the high-pressure hose, fit the nozzle for the job, and start the engine with the recoil rope. Keep the spray moving, and never point it at people or animals.

How do you start a gas pressure washer?

Install the machine, connect the nozzle and hose, pour gasoline, and pull the trigger to exhaust the air until a steady stream of water flows out. Turn on the engine switch, open the fuel valve, close the choke lever, then pull the recoil rope. If the first start fails, wait 2 minutes and try again.

How much does a gas powered pressure washer cost?

The listings in this roundup do not state a price, and this article lists no prices. Compare the stated PSI, GPM, engine and warranty terms.

How much gas does a pressure washer use?

None of the listings in this roundup states a fuel consumption figure, so this article gives no number for it. Check the manual for the engine on the washer you buy.

What is the difference between a soap tank and a foam bottle?

A soap tank mixes detergent into the water through an adjustable switch, as the Steupoek listing states for its 1L soap tank. A foam bottle coats the surface with foam before rinsing, as the IvyBess listings state for their 1000ML foam bottle.

Related: the best gas pressure washer, how to start gas pressure washer, the best gas pressure washer with soap tank, the best pressure washer for engine bay and the best car wash soap for pressure washer.