2025 test11 productsCar Care & Detailing

Which Foaming Car Wash Soap Brand Wins?

We compared 11 foaming car wash soap options head to head. Slick came out on top. See the measured results, the runner-up, the budget pick, and a link to the full test video.

The verdict
Winner

Slick

Price shown in test: $25 for 32 oz (78 cents per oz)

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Runner-up

Swift

Price shown in test: $40 for a gallon (31 cents per oz)

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The measured results

Every number below is read straight from the test. Scroll sideways to see all measurements. Products are listed in the order they finished.

ProductP HDilution RatioLubricity Slide TestDwell Time Garden HoseDirt Removal ColorimeterDust Resistance ColorimeterTire Shine RemovalDwell Time Pressure Washer
1Slick$25 for 32 oz (78 cents per oz)11.06 out of the bottle; narrator notes once diluted through the sprayer it should be around 10 or less2 to 4 oz, then fill remaining space with water1.3 lb, second place behind Griot'seliminated by the Swift in the bracket ('small advantage going to the Swift'), but still received the best possible rating of one along with Swift and Griot's in the final subjective scoringsamples 4.63, 5.02, 4.7, 4.68, 4.93; average 4.79, finished third behind Swift (4.35) and Chemical Guys (4.63)started at 4.79 pre-dust, average 9.15 after dust exposure; finished second place behind Swift (7.86)removed just about all the tire shine, described as definitely the best yet; came out on top with a rating of 1.5eliminated by MJJC in the bracket; not called out individually in the final rating beyond 'several other brands received a very good rating of 1.5'
2Swift Swift Auto$40 for a gallon (31 cents per oz)13.48 straight out of the bottle (used at full strength, no dilution); 12.71 after being sprayed through the foam cannon, still a very strong basenone, used at full strength unlike the other diluted brands1.6 lb, tied with Hybrid Solutionswon the entire bracket, defeating Adam's, Hybrid Solutions, Griot's, MJJC, Chemical Guys, Slick, and Koch-Chemie in sequence; best possible rating of onesamples 4.3, 4.27, 4.33, 4.32, 4.52; average 4.35, came out on top with the least amount of dirtremoved the most dirt after the wash at 4.35 average, then averaged 7.86 after dust exposure; came out on topthin, even layer of flour with no thick pockets, described as definitely the best yet at that point; finished second place with a rating of twobeat Meguiar's in the bracket but was then eliminated by Hybrid Solutions
3Chemical Guys Tough Mudder Truck Wash$12 for 16 oz (75 cents per oz)8.421 to 3 oz of product to 32 oz of water1.5 lb, third place behind Griot's and Slickeliminated by Swift in the bracket ('a little bit more staying power compared to the Chemical Guys')samples 4.53, 4.83, 4.99, 4.43, 4.34; average 4.63, finished a very close second place behind Swiftstarted at 4.63 pre-dust, average 9.71 after dust exposure; described as still quite a bit cleaner than most other brandsperformed better than average at removing dirt but did not perform quite as well as some other brands at removing tire shineeliminated by MJJC in the bracket, described as an easy win for MJJC
4Griot's Brilliant Finish snow foam$20 for 48 oz (42 cents per oz)7.13, described as the most pH balanced yet at that point8 parts water to 1 part soap1 lb, the slickest of all 11 products testedeliminated by Swift in the bracket ('the Griot's is really putting the Swift to the challenge... towards the bottom of the doors the Swift is a little bit more foamy'); still received the best possible rating of one along with Swift and Slicksamples 6.94, 7, 6.68, 6.24, 6.46; average 6.66trailed Hybrid Solutions by more than a point pre-dust; average 10.69 after dust exposure, still trailing Hybrid Solutionstrailed Hybrid Solutions on this test as welleliminated by Hybrid Solutions in the bracket
5MJJC$35 for 64 oz (55 cents per oz)6.89, described as very pH balanced9 parts water to 1 part MJJC2.5 lb, performed about the same as Malcoeliminated by Swift in the bracket ('the Swift is demonstrating better dwell time properties')samples 7.59, 7.41, 7.3, 7.71, 7.51; average 7.5started at 7.75 pre-dust (slightly different from the 7.5 average reported in the dirt-removal test for the same brand, likely rounding or a minor transcript inconsistency rather than a new measurement); average 10.75 after dust exposure, mostly scoring in the 10sperformed about the same as Meguiar's on dirt removal; for tire shine specifically, showed less intense but more spread out flour pocketswon the entire remainder of the bracket after entering, defeating Hybrid Solutions, Chemical Guys, Slick, and Koch-Chemie; best possible rating of one
6Hybrid Solutions$20 for 64 oz (31 cents per oz)9.32 oz to approximately 14 oz of warm water1.6 lb, tied with Swifteliminated by Swift in the bracketsamples 5.76, 5.53, 5.78, 5.4, 5.36; average 5.57started at 5.57 pre-dust, average 10.09 after dust exposure, mostly scoring in the 10sdid not perform quite as well as Swift, but performed well compared to several other brandsbeat Meguiar's and Griot's in the bracket, described as 'the car wash to beat' at that point, before being eliminated by MJJC
7Adam's$35 for a gallon (27 cents per oz)7.55, described as the most pH neutral yet at that point3 to 4 oz per canister, roughly 8 parts water to 1 part soap2.3 lb, tied with Meguiar's for first place at that point in testingtied Meguiar's and was allowed to advance, then narrowly beat Malco, then was eliminated by Swiftsamples 5.41, 5.02, 5.26, 5.62, 5.71; average 5.4, moved into the lead at that point in testingtrailed P&S Professional by a small amount both before and after dust exposure; average 9.79described as looking the best yet at that point, with just a small amount of flour sticking to the paintsurvived the full 4 minute test but was eliminated in a close match against Meguiar's ('there's definitely more foamy car wash with the Meguiar's')
8P&S Professional$29 for a gallon (23 cents per oz)9.23, described as a relatively strong base80 parts water to 1 part shampoo2.8 lb, described as not nearly as slick as the Meguiar'slost decisively to Meguiar's in the first bracket match ('not even close')samples 5.83, 5.8, 5.58, 5.71, 5.54; average 5.69, described as a much better job of cleaning than Meguiar'sstarted at 5.69 pre-dust, average 9.29 after dust exposure; finished third place overall in this testsome flour sticking, but performed a little better than Meguiar'slost to Meguiar's, lasting only 3 minutes 20 seconds versus Meguiar's full 4 minutes
9Malco$38 for a gallon (30 cents per oz)8.16manufacturer instructions did not specify a foam cannon ratio; narrator used 1 oz per quart based on the listed wash-bucket ratio of 1 oz per 3 gallons2.5 lb, trailed Meguiar's and Adam'slost a close match to Adam's ('extremely close, the Adam's seems to have a slight advantage')samples 6.41, 6.16, 6.11, 6.52, 6.18; average 6.28, moved into third place at that point in testingtrailed Adam's after the wash, but all five test areas stayed in the 9s for an average of 9.47, moving into second place behind P&S Professionaldid a decent job, performed about the same as Adam'slooked quite a bit better with the pressure washer than with the garden hose, but lost to Meguiar's ('definitely an easy win for the Meguiar's')
10Koch-Chemie$32 for 34 oz (95 cents per oz)7.21, described as pH balanced; narrator notes the product's own label claims both pH neutral and corrosive, which he flags as an apparent contradiction on the packaging itself2 oz of soap to 1 quart of water2.6 lb, not nearly as slick as some of the other brandseliminated by Swift in the bracket ('the Swift easily outlasted the Koch-Chemie')samples 5.97, 5.91, 6.22, 5.81, 5.91; average 5.96, described as performing about averagestarted a little below average at 5.96 pre-dust, average 12.6 after dust exposure, the worst dust-resistance result of any product testeddid not perform quite as well as Slick, leaving behind quite a bit of tire shinelooked much better with the pressure washer than the garden hose, but lost to MJJC
11Meguiar's Gold Class Car Wash$10 for 64 oz (16 cents per oz)8.45 parts water to 1 part gold class shampoo2.3 lb, versus 3.3 lb for the plain-water control; tied with Adam's for first place at that point in testingbeat P&S Professional decisively, then tied Adam's and was eliminated on the tiebreaksamples 7.87, 7.88, 7.47, 7.5, 7.99; average 7.74, the weakest dirt-removal result of any product testedstarted at 7.74 pre-dust, average 10.8 after dust exposurelooked a lot better than the plain-water controlwon its first four bracket matches (against P&S, Adam's, Malco, and Swift) before being eliminated by Hybrid Solutions

How it was tested

  • pH measurement of each product straight from the bottle (and after foam cannon dilution for Swift)
  • lubricity/slickness test: force in lb to slide a 5 lb weighted, water-saturated sponge across a waxed-off hood section, versus a plain-water control of 3.3 lb
  • single-elimination dwell time bracket using a garden hose foam cannon attachment, winner advances to face the next brand
  • dirt removal test on an unwashed black SUV using a colorimeter (darkness value, lower is cleaner; clean baseline 2.18, dirty baseline 18.76), 5 samples averaged per brand after two 2 minute dwell/rinse cycles
  • dust resistance test: same colorimeter scale after driving the washed SUV down a dusty road
  • tire shine removal test using flour to visualize residual oily tire shine on a test panel, qualitative assessment plus a subjective rating
  • single-elimination dwell time bracket using a high-pressure washer foam cannon attachment, each brand given up to 4 minutes

Slick came out on top with the best average finish of 1.8. It finished in the top three in every category of testing.

From the test video verdict.
Data notes and caveats

11 products tested total, not the 10 named in the description's prose 'Brands:' sentence; Meguiar's Gold Class is extensively tested throughout the transcript (introduced first, used in every test) and appears in the description's amzn.to Products Tested link list even though the prose sentence omits it. Overall scorecard only gives explicit average-finish numbers for the top 3 (Slick 1.8, Swift 2.5, Chemical Guys 3.2); the remaining 8 products' overall placement is not individually stated, only their per-category results, which are captured in full above. Two of the seven graded/timed tests end in single-elimination brackets (garden hose dwell time and pressure washer dwell time) where the winner of each match advances to face the next brand in price order; note that Griot's and Slick both lost their garden-hose bracket matches to Swift yet still received the same best-possible numeric rating of one as Swift in the final subjective scoring for that category, an apparent inconsistency between the bracket narrative and the stated final ratings that is preserved here rather than resolved. No meta chapters exist for this video. This transcript is unusually clean with essentially no brand-name caption mangling, in contrast to many other videos in this corpus.

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