I have a 2500 psi gas powered pressure washer and I use it on everything. The electric are usually quite a bit less pressure so they should be no problem. I pretty much have to use one because I live off a clay dirt road and when it rains it cakes on everything. A regular hose with a nozzle does me no good. And yes it works well on the under carriage as well. the only time it has taken any paint off was on a 1990 Buick Century that the paint was coming off anyway.
2004 DTR Marauder, #423 of 9806
2004 SB Marauder, SOLD
2003 Black Marauder, #3029 of 7093
2003 Black Supercharged Marauder, #1940 of 7093
2003 DBP Marauder, #225 of 328, SOLD
2007 Black Shelby GT Terlingua
2017 Grabber Blue Mustang GT 5.0
2018 Platinum White King Ranch F150 FX4