Dreame calls it a robot vacuum and mop. The "mop" is a cloth on a plate, towed behind with no lift and nothing in the dock to rinse it. Testers agree it's best left off. Unclip it and you have the strongest carpet vacuum here for the money. It pulled 93% of buried carpet sand and 91% of flattened pet hair, both clearly above Vacuum Wars' averages. Its brush stayed clean in the long-hair tangle test, so Dreame's detangling promise holds. The extending side brush in its marketing doesn't. Dreame's own spec table says it has none, and the spec table is right. Our D20 Plus review has the rest.
Living with it is pleasantly boring. The dock is a bag and nothing else, with no water to fill or tip out. Dreame rates each bag for up to 150 days; Wirecutter's estimate is 2–3 months. A maker's "up to" with no test conditions is a best case. I'd never schedule a production line on a supplier's brochure, and I wouldn't plan bag changes on this one. It has no camera or microphone. The US manual gives a button sequence that turns its Wi-Fi off. By that manual's reckoning, any doorway lip over 0.8 in (20 mm) stops it.
The catch is real. Vacuum Wars' obstacle course went 0 of 24. Wirecutter says it wants more babysitting than pricier robots, because it snags itself and gets stuck. A dropped sock is invisible to it, and so is whatever the dog left. In a house picked up before it runs, that hardly matters. With a puppy, it's the whole question.
If nobody wants to mop and someone clears the floor first, we'd buy it.