Equipment that outlasts the trend.
Detailing is the corner of car gear where the marketing runs furthest ahead of the evidence. Pressure washers are sold on a number the manufacturer supplies, polishers on a maximum speed nobody uses, and coatings on a durability figure measured by the company that wants the durability to be high. Where a real measurement exists we print it with the conditions attached. Where it does not, we say that instead of filling the gap.
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Polishers
Your first dual-action polisher
Decided on weight and noise, because those are the two things anyone has measured. Where the published test and the forums disagree, both are shown.
5.8–8.6 lb · 62.8–91.0 dBA
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Pressure washers
The psi on the box is not a measurement
Every round-up prints the manufacturer's pressure figure. The one source that put a gauge on the line read 1000 psi through a car-washing nozzle.
1.1–2.6 gpm claimed
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Vacuums
Two labs measured suction. In different units.
Car and Driver prints inches of water, MotorTrend prints kilopascals, and neither converts. Ten vacuums put on one scale — where the car-wash machine beats four of them.
4–22 kPa measured
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Tool
Dilution ratio calculator
Any bottle, any ratio, both readings of what “1:10” means — because brands do not agree and picking one silently gives half of you the wrong answer.
1:4 to 1:128
Headlight restoration is a detailing job too, and one of the few with a laboratory measurement behind it. It is filed under Problems: what a restored lens gives back, and what it costs in glare.
What this section recommends
One product per page, each chosen on the measurement that page reports. Amazon holds the live price; we do not copy prices onto the site.
Check priceDyson Car & Boat
Joint-highest suction at 22 kPa, and the lightest machine that manages it
from Car vacuums: two labs measured suction in two different units
Check priceWestinghouse ePX3500
The quietest of the four at 70.0 dBA
from Pressure washers for cars: the psi figure is not a measurement
Check priceGriot's Garage G9
The lightest of the serious tools at 5.8 lb
from The best dual-action polisher for a beginner, by weight and noise
Product photographs: Dyson, Griot's Garage, Westinghouse.