Simpson Megashot 3100 PSI

Last updated date: July 9, 2019

DWYM Score
8.4

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We looked at the top 1 Gas Pressure Washers and dug through the reviews from 12 of the most popular review sites including BestReviews, Consumer Reports, New York Times Wirecutter, The Spruce, Family Handyman and more. Through this analysis, we've determined the best Gas Pressure Washer you should buy.

Overall Take

The Simpson Megashot 3100 PSI is made out of steel, which makes it super solid. We also like its portability and power. In our analysis of 54 expert reviews, the Simpson Megashot 3100 PSI placed 3rd when we looked at the top 7 products in the category. For the full ranking, see below.

Editor's Note July 16, 2019:
Checkout The Best Gas Pressure Washer for a detailed review of all the top gas pressure washers.

Expert Summarized Score
8.2
12 expert reviews
User Summarized Score
8.8
3,056 user reviews
Our Favorite Video Reviews
What experts liked
Powerful enough for heavy-duty cleaning jobs. Solid, durable construction.
- BestReviews
Easy to move and transport. Easy hose storage. Wand very easy to remove and use
- Consumer Reports
For the price, the Simpson MegaShot is a good direct drive power washer for a painter, or a homeowner.
- Den Garden
In my opinion, it is the most portable and easy to use machine out in the market
- Pressure Washer Critics
Unlike competing models which are usually made out of plastic, this unit features a tubular steel design and powerful Honda engine which is built to last.
- Wash Wisely
We researched a number of popular gas washers, but none matched the Ryobi RY803001’s ease of use, warranty, availability, and Honda engine. The Simpson MSH3125-S came the closest.
- New York Times Wirecutter
Added with this, the power delivered by this washer is outstanding, larger power at a greater efficiency.
- Power Tools Rater
The SIMPSON MSH3125-S is one of best pressure washers for the money. A wonderful balance of quality, features, power and price.
- Chainsaw Journal
HONDA GC190 OHC premium Engine. Durable, efficient and effective with a long lasting engine and pump designed for ergonomic use.
- Pressure Washer Ratings
If you have a little more to spend on a serious pressure washer but don’t want to shell out for a professional-grade model, the Simpson MegaShot MSH3125-S offers a little extra power at a still-reasonable price.
- The Spruce
This unit shares our Best Overall award with the Ryobi. The beauty of this machine is its simplicity.
- Family Handyman
The frame also has an advantage because it made from welded steel and a solid steel axle and steel engine plate, giving you added strength and stability
- Pressure Cleaned
What experts didn't like
Has been known for occasional units failing to run properly or at all.
- BestReviews
On-off switch not easy to read and use.
- Consumer Reports
The main disadvantages I have encountered are mostly design flaws, especially the weird location of the pull cord and water inlet connector.
- Den Garden
My only reason not to give it a perfect 5 out of 5 rating though is the abysmal customer support from Simpson...
- Pressure Washer Critics
Well honestly customer support is not up to the mark. I tried calling them for 3 to 4 times but was not in service all the time.
- Power Tools Rater
Some reviewers also say they’ve dealt with oil leaks and excessive vibration.
- The Spruce

From The Manufacturer

Easily clean away dirt, grime & mildew with the powerful Simpson MS60763-S pressure washer awesome cleaning power pump generates 3100 PSI of water pressure 2.4 gallon per Min to blast away dirt dislodge tough, ground-in grime & residue multiple home & commercial uses use for cleaning surfaces like wooden decks, metal & concrete cleans Cars, SUVs, caravans & motor homes powerful enough to remove paint from external walls easy set-up & operation quick start guide & user manual provided easy to assemble with no tools required up & running within Min simply pt. & spray non-marring, kink & abrasion resistant 5 spray nozzles included for multiple job types one-board accessory storage for easy access your safety in mind solid steel construction for maximum strength trigger lock to prevent accidental spray activation note: installation instruction is on page 8 to 15 & troubleshooting guide is on page 20 of user guide found under technical specification.

Overall Product Rankings

1. Ryobi 3000 PSI
Overall Score: 9.5
Expert Reviews: 8
2. Generac OneWash 3100 PSI
Overall Score: 8.9
Expert Reviews: 6
3. Simpson Megashot 3100 PSI
Overall Score: 8.4
Expert Reviews: 12
4. PowerShot 3300 PSI
Overall Score: 8.3
Expert Reviews: 4
5. WEN 3100 PSI
Overall Score: 8.1
Expert Reviews: 4
6. DeWalt Professional 3400 PSI
Overall Score: 8.1
Expert Reviews: 2
7. 20655 3200 PSI
Overall Score: 7.6
Expert Reviews: 6

An Overview On Gas Pressure Washers

As a homeowner, you likely take great pride in the curb appeal of your home – no matter whether you’ve owned your house for just a few months or for many years. After all, it’s your castle, the place where you and your family spend the majority of your time outside of work and school.

If you really want to make the exterior of your home sparkle, you’ve likely considered investing in a gas pressure washer to keep it spotless. From your driveway to your siding (and lots of places in between), a gas pressure washer can quickly and easily rinse away years of build-up and grime.

A gas pressure washer is one that uses gas instead of electricity for power. Since you don’t have to plug your gas pressure washer into an outlet, you can easily transport it anywhere you need to blast some dirt away — there’s no hassle of getting out an extension cord or trying to stay near an outlet.

Gas pressure washers won’t cause your electricity bill to spike, either. You’ll simply refill your gas pressure washer with gas from a gas pump, much like you would a gas lawn mower. They’re also extremely easy to use, once you’ve read through the instruction manual and got the hang of things. You’ll be powering through stubborn dirt on your fence, your gutters, your windows and other areas of your home or business in no time.

DYWM Fun Fact

To fully understand the awesome power (and danger) a gas pressure washer produces, it’s helpful to compare it to your standard garden hose. Case in point: the water pressure of your garden hose is somewhere in the neighborhood of about 50 pounds of pressure per square inch. Your gas pressure washer? Believe it or not, it’s closer to 1,000 to 4,000 pounds of pressure per square inch, which is a huge difference. That’s also why it’s super important to follow all the safety protocols in the user manual so that no one gets hurt. Always keep an eye on children when you own a pressure washer, even if you think it’s store out of sight — you can never be too careful when it comes to that much pressure.

The Gas Pressure Washer Buying Guide

  • Regular maintenance is critical for keeping your gas pressure washer working like new. You’ll want to follow all of the maintenance and cleaning processes listed in the user manual to ensure that your gas pressure washer has a long life without issues.
  • If you’re just getting started with your new gas pressure washer, consider testing it on a small, hidden patch of whatever surface you’re trying to clean. It can take a few tries to really get the hang of pressure washing, so this will give you a place to practice until you’re confident in your abilities.
  • There’s a difference in power among gas pressure washer models. Typically, you can separate them into broad categories: light-duty, medium-duty and heavy-duty. The power of a gas pressure washer will be labeled in pounds per square inch, typically written as “PSI.” In essence, this number tells you about your pressure washer’s ability to blast or strip dirt off of a surface.
  • In general, light-duty pressure washers have a PSI of up to 1900 and are good for light jobs around the house, like washing your car. A medium-duty pressure washer might have a PSI between 2000 and 2800, whereas a heavy-duty model typically has a PSI above 2800. The Ryobi 3000 PSI, for example, is incredibly powerful, thanks to its Honda GCV160 engine. Some models, such as the Generac OneWash 3100 PSI, allow you to adjust the pressure for varying jobs.
  • Another important metric to know before purchasing a gas pressure washer is its volume, which is labeled in gallons per minute, or “GPM.” This number is just as important as the pressure, as you need the flow of water to move the dirt and grime away from the surface you’re cleaning. With the Simpson MegaShot 3200 PSI model, for example, you’ll get 2.5 gallons per minute for volume.
  • Consider how important accessories are before purchasing a gas pressure washer. The Simpson MegaShot 3200, for instance, comes with five different nozzle tips that you can connect to its steel spray wand, which means it can easily switch between cleaning your RV, your driveway or your home’s siding.
  • If you’re looking to save a little bit of money, the WEN 3100 PSI offers the best value.