Milwaukee - M18 FUEL 6 Gallon Wet/Dry Vacuum

I've owned the PACKOUT 2.5 gallon, the 6 gallon and the 9 gallon. I initially returned the PACKOUT, then bought the 6, thought it was pretty good but tried the two battery 9 gallon. I loved the power and the suction but ultimately it was a bit unwieldy even with its cart, so I returned it and bought another 2.5 gallon PACKOUT. (When you start avoiding using the vac because it's a hassle even though it's cordless, you know it's not really serving its purpose.) It's just a very handy weight and yet still powerful enough that when cleaning an entry rug I have to hold the rug down with one hand because the vac lifts it, and I store it by hanging it on a [48-24-8496 Compact Wall Plate](https://www.milwaukeetool.com/Products/48-22-8496). IMHO the 2.5 gallon PACKOUT is the sweet spot in terms of power, portability and power usage. If you want a longer hose, an extension hose is available, the [49-90-2014 1-1/4” x 2’ to 6’ Expandable Hose](https://www.milwaukeetool.com/Products/49-90-2014).

I use a m18 fuel vacuum. Definitely not cheap if you don’t own the batteries

Milwaukee M18 Fuel vacuum. Even better if you're in a trade and already own several Milwaukee batteries/tools. 

I use a Milwaukee on construction sites, it'll be fine for a vehicle

No dude it's perfect, it's a small easily maneuvered with good power. It's the size of a boom box from the late 80's lol tho look at them at home Depot and you can make your choice. All 3 are sold there.