Best Gas Pressure Washers For 2020: Top 10 List With A Buying Guide

If you are reading the article “best gas pressure washers,” meaning you are smart and have chosen a smart way to get rid of those badass dirty driveways, patio, grime, muck, smudges on steel, and nasty oil spill. However, if you have changed your mind, then there is a hard way as well, which you already know. Lol. 

For those who have landed here by mistake – there are several types of pressure washers: Electric pressure washer, Gas Pressure washer (you are about to read), Hot Water Pressure Washers, Cold Water Pressure Washers.

The Electric-powered and Gas-powered pressure washers are popular among all types. However, Gas-powered pressure washers are slightly powerful and expensive than Electric. These types are considered the best for home. On the other hand, Hot Water and Coldwater pressure washer are the types that are used for commercial and business purposes. 

So, before the article becomes boring, let me conclude it in a few words. You can go for any type of pressure washer as per your needs. That’s why I’ve created some separate pages, just click and go through. 

  1. Best Electric-powered pressure washer 2020
  2. Best Gas-powered pressure washers 2020

For those who ended up with Gas pressure washers, I walk you through to my top ten ‘Gas pressure washers reviews 2020‘. 

The time is over! Here are my Best Gas Pressure Washers Reviews for 2020. 

Simpson MSH3125 MegaShot – best for light to heavy-duty 


  • Gallon Per Minute: 2.5 GPM
  • Pound Per Square Inch: 3200 PSI
  • Engine: Honda GC190
  • Pump: OEM Axial
  • Hose: MorFlex 25′
  • Nozzles: Quick Connect Tips (0°, 15°, 25°, 40°, and soap)
  • Warranty: 2-year On the engine, 1-year on Pump


Simpson is one of the best brands in the gas pressure washers industry when durability is concerned. Likewise, the Simpson MSH3125-S feels quite solid and well-built. However, its never-flat wheels are fantastic; I tested on rough surfaces; they are designed to be worked with any type of area of your house. Unlike the previous model, this MSH3125 is robust and handles heavy-task very smoothly because of its output of 3200 PSI.


When it comes to the engine, the MSH3125-S will amaze you with its powerful honda engine (it attracts me the most to this unit), which comes with a 2-year Honda consumer engine warranty. In terms of small engine reliability, honda conquers the race.

Hose & Nozzle:

This gas washer is equipped with a 25-ft kink & abrasion resistant hose. However, it doesn’t have a detergent tank; we have to put a detergent bottle inside its hose. In addition, it includes five nozzles (0°, 15°, 25°, 40°, and soap). These nozzles tips can handle everything, whether it is your patios or cars.


  1. The Axial Cam Pump makes it maintenance free. 
  2. It comes with all types of equipment, no need to buy separately. 
  3. A wide range of nozzle tips (0°, 15°, 25°, 40°, and soap) with an ergonomic spray gun. 
  4. Unlike others, it has a brass pump head rather than the aluminum head. 
  5. No doubt! It is durable, lightweight, and easy to maneuver.  


  1. It doesn’t include a separate detergent tank. However, the built-in detergent tube doesn’t receive much detergent. 


The machine is known for “Do-It-Yourselfer”; thus, it is a perfect option for those who are looking for a powerful gas-powered pressure washer without investing much. Some cleaning tasks such as patios, outdoor furniture, home exteriors, sidings, decks, and many more, are done quickly and effortlessly.

WEN PW3100 Gas-Powered – Best For Light to Medium Duty 


  • Gallon Per Minute: 2.5 GPM
  • Pound Per Square Inch: 3100 PSI
  • Engine: 208cc 
  • Pump: Axial
  • Hose: 30-foot reinforced
  • Nozzles: Five Quick Connect Tips (0°, 15°, 25°, 40°, and soap)
  • Warranty: 2 years 


The WEN PW3100 is another powerful gas-powered pressure washer. It has a 208CC engine that can pump up to 2.5 GPM (flow rate) and creates a maximum water pressure up to 3100PSI. Moreover, this engine is equipped with OHV air-cooled 4-stroke. When it comes to transportation, this pressure washer offers ‘Never-Flat Wheels.’ The pre-installed twelve-inch wheels are ready to tackle any type of terrain with ease. The machine also provides a Quick Change Lance feature in order to change its nozzles.


This power washer also has a powerful 208cc engine. However, it is not as powerful as Simpson pressure washer. Still, it manages to pumps up to 2.5 GPM and exerts 3100 PSI. No doubt! It has a powerful motor compared to electric-powered washers. Plus, it passes all the intense cleaning tasks where I used it for.

Hose & Nozzle:

Unlike the Simpson, A 30-foot reinforced hose can easily handle larger surface areas. It makes unreachable areas reachable, thus allows you to pull it across the yard. However, it is made up of some sort of plastic, not PEX plastic. The attachments are also quite easy compared to others. Like most pressure washer, it also offers five easy connect nozzles tips (0°, 15°, 25°, 40°, and soap). You can change or pop in these nozzles very easily with the help of the ‘Quick Change Lance’ feature.


  1. A long hose, comparatively larger, up to 30 feet. 
  2. 12-inch Larger wheels make the machine easy to move. 
  3. The powerful 208 cc engine ensures 3100 PSI and 2.5GPM. 
  4. Easy to connect five Interchangeable nozzles (0°, 15°, 25°, 40°, Soap Nozzle). 
  5. The onboard soap tank is great. 


  1. The wand holder is not that good. 


My experience with the WEN PW31 gas pressure washer has been great. With the large wheels and hose, it makes large outdoor cleaning tasks very easy. It is really easy to move. You can roll it throughout the tough terrains. When it comes to assembling the cleaner, the directions are quite straightforward to follow. It doesn’t require any assistance. So it can be an excellent bargain for the price. Therefore, I can recommend the WEN PW31 gas pressure washer to the immense outdoor task to light-duty commercial tasks.

PowerBoss Gas Pressure Washer – Best For Medium Duty Tasks

gas pressure washer


  • Gallon Per Minute: 2.5 GPM
  • Pound Per Square Inch: 3100 PSI
  • Motor & Engine: Durable HONDA GC190, 187cc 
  • Pump: Axial Cam
  • Hose: 25-foot reinforced
  • Nozzles: Four Quick Connect Tips (0°, 15°, 40°, and soap)
  • Warranty: 2 years limited with 3-month Commerical warranty


Let’s welcome the third gas pressure washer from my list. If you could see the pics, you might say this ‘powerboss gas pressure washer’ looks powerful. Yes, when it comes to cleaning, this pressure washer stands by its name. When the overall design is concerned, it is durable and solid with the heavy-duty frame. The 10-inch pneumatic wheels make the machine easy to move. There is a built-in onboard axial pump as well, which is totally maintenance-free.


Like Simpson, it also utilizes a durable HONDA GC190 187CC engine. Thus, this pressure washer can exert a maximum water pressure at 3100 PSI at 2.4 GPM. However, it can deliver 2500 PSI at 2.7 GPM. Meaning, you won’t have any issues while using it with medium-duty tasks.

Hose & Nozzle:

It includes a 25-foot long flexible hose. In the picture, you might notice that it has a notch to store the hose on. Additionally, there is a 1-gallon onboard detergent tank. The hose and large detergent tank make outdoor cleaning easier. When it comes to nozzles, the PowerBoss includes four quick-connect tips (0°, 15°, 40°, soap). However, if compared to others, it doesn’t include the 25° nozzle tip.


  1. Maintenance-free Axial cam Pump with easy start technology. 
  2. The integrated 1- gallon tank allows adding detergent to it. 
  3. A durable Honda GC190 gasoline-powered 187cc engine. 
  4. Assembly of the cleaner is easy and straightforward; it hardly takes 10 minutes.  
  5. Its hose, nozzles, and Wand are high-quality.  


  1. It is a bit pricey compared to the competition. However, comparatively includes higher quality accessories. 


The PowerBoss gas pressure washer is powerful but pricey. Being pricey, it never compromises with lower quality accessories or attachments. It is solid and durable. When it comes to delivering a maximum of 3100 water pressure, there is a back up of a durable HONDA engine. However, it is not the most powerful gas pressure washer on my list but worth the money. And, you can easily clean all your medium-duty projects with it.

 A Quick Buying Guide: The Gas Power Washer

You won’t believe but there so many factors when it comes to buying a good gasoline pressure washer. When you get to know them, you will understand how daunting the task it is. However, I am not going to share all of them; instead, it would be better to discuss the most important key factors, which can make any gas pressure washer the best. So, let’s jump onto it. 


I would love to mention this factor at the top; however, it is self-explanatory but important. You can’t avoid it and make sure where you intend it to be used. Once you figure it out, then make a decision accordingly. There is no doubt; gas pressure washers are expensive compared to electric pressure washers. On the other hand, Gas-powered machines are powerful than electric ones. So, If you don’t want to waste money, I would suggest that you first assess your requirements then purchase.

PSI & GPM level:

When it comes to the actual cleaning capacity of the gas pressure washer, PSI & GPM play their roles. However, you don’t know what are these two specs stand for? Let’s understand with some simple words. 


The PSI is nothing but refers to the pressure of the water per inch; thus, it stands for pounds per square per inch. The more the PSI, the better the cleaning ability. For example:

a) A light-duty task requires 1,000 to 2,500 PSI. If it is your case, then buy an electric pressure washer. 

b). A medium-duty task requires 2,500 to 3,500 PSI. In this case, you can buy either electric or gas pressure washers. 

c). A heavy-duty job requires 3,500 to above. In this case, you can purchase either an excellent commercial pressure washer or an industrial pressure washer.  

Now you know, why PSI is the crucial factor to consider. Let’s understand the GPM too. 


GPM is nothing but the flow rate of the water. In other words, it refers to the volume of the water through your gas pressure washer’s nozzle (per minute). Therefore, it stands for gallons per minute. The higher the GPM, the faster you can clean a surface. The most powerful gas pressure washer ranges GPM from about 2.2 to 10. 


Manufacturers are competing with each other – who has the most powerful gas pressure washer? However, you are not. So, it is always better to have a small and compact gas pressure washer instead. But, portability means a pressure washer that can handle only simple cleaning tasks, not heavy-duty. So, make sure you keep this factor in your mind before buying any gas pressure washer. Take a look at some of the best portable pressure washers for your household. 


The maintenance is one of the essential key factors; whether you buy a bike or a gas pressure washer, it doesn’t matter. Make sure your pressure washer requires low maintenance. Just like the above-recommended gas pressure washers. 

FAQ: Gas pressure washers’ Questions & their answers. 

Which is better? An electric pressure washer or gas pressure washer? 

Ans. People keep me asking this question a lot; however, it depends. Both have their advantages and disadvantages. Why don’t you see the comparison table below? 

Electric Pressure Washer V/s Gas Pressure washer

Electric pressure washer:
  1. They are quiet because of not delivering higher PSI. 
  2. They are considered best for cleaning small things, such as a vehicle, patio, pool area, or backyard grill. 
  3. Comparatively, they are portable and lightweight. 
  4. Electric cleaners are low maintenance equipment. 
  5. It is a one-time investment, no need gas or oil as an energy source. 

An electric pressure washer is an ideal option for those who want to clean small items, as I mentioned above. If you are interested in, please check out my 2020’s list of best electric pressure washers. 

Gas Pressure Washer:
  1. In comparison, they are expensive and bulky; however, their wheels make them portable. 
  2. They require you to perform maintenance. 
  3. They are more powerful and can have more than 4,000PSI. 
  4. A gas pressure washer can handle heavy-duty tasks. 
  5. You can take them anywhere with you since it doesn’t require electricity. 

A gas pressure washer can be an ideal option for those who want it for medium-duty to heavy-duty tasks. 

Well, If you are reading this article from the beginning, you might have known the list of best gas pressure washers above. 

How long do gas pressure washers last?

It can last between 500 and 4,000 hours, depending on the pressure washer you have. However, electric pressure washer motor has a longer life. 

Do Gas Pressure washers use regular gas? 

No, you can’t use regular gas; instead, It is recommended you to use fresh and clean gasoline with a minimum of 87-octane. Let’s come to point; we should not use any E85 type of gasoline in the pressure washer. 

What kind of oil do you put in a gas pressure washer?

It’s a matter of temperate conditions. However, if you’re not aware of the temperature of your pressure washer, you should use synthetic 5W-30 oil. It can go as low as 20 degrees and as high as 120 degrees. 


There is no doubt! A gas pressure washer can make your cleaning ability faster than you think. However, it’s not going to happen until you have the perfect gas pressure washer in your hand, right? Don’t worry! you don’t have to waste your time finding the best one as I’ve already shared my top three gas-powered pressure washers for 2020 above.

If you think this article is missing out something or not matching the way, you wanted it to be. Don’t hesitate to ask. Moreover, if you believe you have a better gas pressure washer option that needed to be reviewed on my list. Trust me; the comment section is looking for you down below. 

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