Home > Home & Garden > Pressure Washers > Simpson MSH3125-S MegaShot

Simpson MSH3125-S MegaShot Review

By: Carl Laron on February 23, 2018

Bottom Line

For those with tough household cleaning jobs, the Simpson MSH3125-S MegaShot is a standout choice. Driven by a high-quality Honda engine, this pressure washer is more than powerful enough to tackle any residential task, including stripping paint.


  • Standout performance
  • Honda engine
  • High quality hose
  • Carb compliant


  • No onboard detergent tank
  • Not the best customer service
Our Analysis

Breaking it down


Powerful sprayer hits hard and fast. While some pressure washers have more impressive ratings, in real world use, the Simpson MSH3125-S stands shoulder-to-shoulder with the best of them when it comes to powerful cleaning ability. Users report good performance on decks, boats, walkways, cars and siding, as well as mold and mildew stains. It can also strip paint, though care should be taken not to damage underlying surfaces. Driven by a well-regarded Honda engine, durability is excellent, and Brian Teitelbaum at Pressure Washers Direct reports that among the models that this retailer carries, the Simpson has been by far the most reliable and durable pressure washer in this category." That might be a very good thing, as some experts report customer service that leaves a bit to be desired -- a complaint echoed by some but not all users. The Honda motor is covered for two years, the frame and pump for one year, and the spray accessories for 90 days.


What you need, but not much more. The Simpson MSH3125-S MegaShot pressure washer is supplied with five quick connect nozzles -- zero, 15, 25 and 40 degrees, plus soap applicator -- to handle any cleaning task. The MorFlex hose is kink and abrasion resistant, and Family Handyman notes that it "is very flexible and includes double O-rings for a better seal." One downside is that there are no on-board detergent tanks, but there is a detergent injection system and syphon hose included, which can be dropped into a container of detergent. The Simpson pressure washer is CARB compliant so that it can be sold in all 50 states.  

Ease of use

A breeze to handle and maneuver. Although it weighs around 74 pounds, the Simpson MSH3125-S MegaShot is easy to maneuver. Family Handyman says 10-inch pneumatic tires "give the smoothest ride of all the machines" it tested. It also says that the Simpson paced the field when it came to set up. Users largely report that the machine is exceptionally easy starting -- something that can't be said of all gas pressure washers. The quick connect nozzles follow an industry standard and are easy to change out, Customer service hiccups aside, most users give good grades to the Simpson MSH3125-S, which rates better than the norm among gas-powered pressure washers.

Recently Updated
Pressure Washers buying guide

What every best Pressure Washers has:

  • A power level that suits your needs.
  • Maintenance requirements you can handle.
  • An adjustable water spray.

Read More »

Learn More »