3 Best Pressure Washer Soap for Cars 2022 Review and Buying Guide

The perfect car wash system is not complete without the best soap for your car wash pressure washer. However, you can’t pick any detergent to bring back luster to your vehicle. Only soap dedicated for use with car wash pressure washers will do the job.

So, here we present our research on the top picks for personal and professional use. These brands set themselves apart. They not only use potent ingredients, but they rinse without leaving streaks. Plus, you get lots of suds that make car wash fun. 

Let’s reveal the best soap for car wash pressure washer on the market to have a right purchase.

 Cheapest PriceBest Pleasant ScentHighly Recommend
Karcher Car Wash
Sun JoeSimple Green
Overall Score

9.5/10

9.2/10

9/10

Summary

This highly-concentrated cleaner contains special waxes. It deep cleans and leaves a protective layer of wax.

Gently loosens dirt and grease with a rich blanket of foam. It reduces the risk of scratches and swirls.

A heavy-duty cleaner that cleans your car as well as it does house siding and driveways.

Key Features

- Up to 20 gallons of diluted cleaning soap
- Biodegradable
- Spot-free rinse
- Protects paint
- Fast-foaming formula
- Gentle on paintwork
- Supports manual cleaning

- Biodegradable
- Removes mold, moss, and algae
- Can clean up to 6400 sq. ft
- Non-toxic formula
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Things to Consider Before Buying Pressure Washer Soap

Things to Consider Before Buying Pressure Washer Soap
Consider above factors before buying a pressure washer soap for your car

Give your ride some love by using high-quality soap. You don’t want to have streaks and scratches ruin a nice paint job. So, after you’ve picked a good foam canon, the next thing you want is to choose soap while keeping a few things in mind. 

Foaming Capacity 

An effective car wash soap gives off lots of suds. It indicates that the soap is highly capable of removing road grime, grease, and dirt. This is because it lifts dirt particles off the surface of a vehicle. What’s more, lots of bubbles soak up dirt, so you don’t have to scrub the car’s body. It reduces the chance of scratching the car’s surface during cleaning. 

That’s why you’ll want to note the foaming capacity of the soap you have in mind.

Concentrated Or Pre-Diluted Formula 

You’ll find concentrated and diluted formulas for use in a pressure washer. Concentrated formulas need diluting in a separate bucket. They are a bit handful but are on the budget-friendly side. One bottle will sustain your vehicle through several washes. 

Diluted formulas, on the other hand, come in spray bottles. Some can be attached directly to the pressure washer hose. They are convenient because they are pick-and-go and you don’t need a foam cannon. The only disadvantage is that they are costlier than their concentrated counterparts. 

Protection

Some brands include additives like wax to protect the car’s surface between washes. The wax bonds with the car’s outer coating so it can stay on the car’s surface long after washing the vehicle. 

However, cleaners with additives are not ideal for concrete driveways, house siding, decks, and outdoor furniture. 

Biodegradable 

Are you concerned about harming your landscape plants?

You will want to consider a biodegradable pressure washer soap. Fortunately, many brands are now biodegradable. The best soaps are EPA-endorsed. It means they won’t harm waterways and animals. But to be safe, always look at the label. There should be a safety status. If not, you can contact the manufacturer or look up the ingredients on the MSDS. 

Scent 

Yeah, we know it’s a car wash cleaner. But did you know that some soaps are too intense that they irritate drivers? As a result, you’ll want a cleaner that has a pleasant scent for you. So, if you like citrus, pineapple, or lemon, go for it.

3 Best Car Soaps for Pressure Washer

Sun Joe SPX-FCS1G-CRM Premium Snow Foam Orange-Vanilla Scent Car Wash Soap & Cleaner
Removes dirt and grime, yet safe for wax and sealants
Sweet scent of ORANGE-VANILLA

Sun Joe SPX-FCS1G-CRM Premium Snow Foam 

Karcher Car Wash & Wax Soap for Pressure Washers
Rinses away without leaving residue behind
Revealing the original luster of your car

Karcher Car Wash & Wax Soap

Simple Green Oxy Solve Total Outdoor Pressure Washer Cleaner
U.S. EPA’s Safer Choice program
Brighten and renew surfaces

Simple Green Oxy Solve Pressure Washer Cleaner

1. Sun Joe SPX-FCS1G CRM Premium Snow Foam

Want thick, snow suds? You’ll like the Sun Joe SPX-FCS1G CRM. Designed with a pressure washer and foam cannon attachment in mind, it will boost your auto cleaning process. 

Why Sun Joe SPX-FCS1G CRM?

This car wash preserves wax jobs, is biodegradable, and smells great. Still from a big name in the industry, you’ll love that it’s a fast-foaming formula. Use this product on all types of automobiles since it’s also gentle on paint and metal. You get to choose from three scents. That is pineapple, orange and vanilla combo, and coconut. And, you only need 0.2fl oz to a gallon of water to get rich suds. 

Did we mention this car wash is tough on dirt? Sun Joe SPX-FCS1G CRM captures dirt owing to its thick-viscosity formula to reveal a radiant surface. This brand does not eat up wax or sealant. So, it’s perfect for between waxes. 

Sun Joe SPX-FCS1G-CRM Premium Snow Foam Orange-Vanilla Scent Car Wash Soap & Cleaner

Sun Joe SPX-FCS1G-CRM Premium Snow Foam

Pros

  • Fast-foaming formula
  • Gentle on paint, wax, and metal
  • Biodegradable
  • You can use it with a brush or mop

Cons

  • Needs working on small sections at a time

2. Karcher Car Wash & Wax Soap

Is a paint stain creating a nasty look on your car’s paintwork? The Karcher Car Wash and Wax Soap eliminates leftover stains in a cinch. 

Why Karcher Pressure Washer Soap?

First, this product is affordable. And, it works as great as more expensive brands. Second, it comes from a well-renowned brand. Thirdly, and most importantly, it leaves your car sparkly and protected. It comes with wax added to the product. As a result, it can provide a bit of protection between waxes. 

Karcher is a highly concentrated solution. It can remove watermarks and tough road grime, meaning you don’t need to scrub the surface. It only needs 2-3 minutes sitting on the car’s exterior. And then, power-rinse your vehicle. You can also use the car wash on trucks, RVs, and boats. Its best feature is that it does not leave any residue behind. 

Karcher Car Wash & Wax Soap for Pressure Washers

Karcher Car Wash & Wax Soap for Pressure Washers

Pros

  • Non-toxic and biodegradable
  • It gives cars a nice shine and slight wax protection
  • Strong enough to remove tough grime

Cons

  • It’s not multipurpose owing to the wax

3. Simple Green Oxy Solve Concentrate

Simple Green Oxy Solve Concentrate is a full-strength cleaner that will leave your car spotless.

Why Simple Green?

This pressure washer cleaner uses peroxide to clean your car’s surface. The result is a bright exterior. Before a buffing job, it’s best to use it because it’s easier to shine your car from a smooth surface. Thanks to its high concentration. A little goes a long way. 

Simple Green creates thick suds that soak up dust and grime super fast. You’ll have an easy time washing routine driving dirt or tough caked-on dirt. It also works well on embedded stains like tree sap, bug splatters, and bird droppings. Use it on your foam cannon for thick foam and effortless cleaning. 

Simple Green Oxy Solve Total Outdoor Pressure Washer Cleaner

Simple Green Pressure Washer Cleaner

Pros

  • Lifts dust, grime, and stains
  • Fast-acting
  • Only a tiny amount is needed

Cons

  • It’s a bit pricey

Final Thought

We hope our review and buying guide serves as an eye-opener when choosing your next soap for your car wash pressure washer. These cleaners are your best bet at speeding up your cleaning system. 

On our list, you’ll find a protective option – the Karcher Car Wash & Wax Soap and the Simple Green Oxy Solve Pressure Washer Cleaner is a multipurpose cleaner for the car, deck, and driveway. And if you’ll looking forward to using your foam cannon, Sun Joe SPX-FCS1G-CRM Premium Snow Foam will give you a fantastic experience.

Sun Joe SPX-FCS1G-CRM Premium Snow Foam Orange-Vanilla Scent Car Wash Soap & Cleaner

Sun Joe SPX-FCS1G-CRM Premium Snow Foam

Karcher Car Wash & Wax Soap for Pressure Washers

Karcher Car Wash & Wax Soap

Simple Green Oxy Solve Total Outdoor Pressure Washer Cleaner

Simple Green Oxy Solve Total Outdoor Pressure Washer Cleaner

Frequently Asked Questions (FAQs)

1. Do pressure washers need special soap?

Yes. 

Pressure washers need special soap. Unlike dish soap, pressure washer soap can withstand the high pressure and power of these machines. Such soap can work at different velocities and pressure of the pressure washer unit. 

So, to ensure that you get the most out of a pressure washer, it’s best to use it together with dedicated pressure washer soap. 

2. Can you use car shampoo in a pressure washer?

Car shampoos are incompatible with pressure washers. They are for manual applications. As a result, you won’t get as many suds as you’d want in a pressure washer. To this end, you’ll use too much of it to get rid of stubborn grease. So, it can cost you more than getting a good pressure washer cleaner. 

Read more:

3 Best Car Wash Pressure Washers 

Foam Gun vs. Foam Cannon

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