Budget-friendly robot vacuums are way smarter than they used to be. Even without all of the fancy features, the best cheap robot vacuum can absolutely shave some time off of your chore routine — if it works the way it's supposed to.
But many of the super-inexpensive robot vacuums cut corners too close to the sun, quickly going from helpers around the house to agents of chaos. Let's say that their low price stems from basic bumper car navigation instead of smart mapping, or from outdated obstacle sensors that get confused by table legs. Your chances of coming home to a vacuum stuck under the couch are higher than the chance of coming home to a fully-swept floor plan.
It's also more likely than not that any old cheap robot vacuum caps suction power at 3,000 or 4,000 Pa. And that's simply not enough to challenge any remotely stubborn crumbs, dust, or pet hair baked into carpet. That mediocrity extends to many robot vacuum and mop combo models, which often don't "scrub" so much as feebly glide a damp cloth around. A few steps in your bare feet, and you're all but guaranteed to step on debris the vacuum left behind.
Long story short: Buying a robot vacuum just because it's cheap puts that glorious hands-off cleaning experience in jeopardy. But not all budget robot vacuums are disappointing. Compared to five years ago, the affordable end of the robot vacuum spectrum has experienced just as much of a glow-up as the premium end. Smart mapping and self-emptying docks are both common and affordable in 2025, especially when deals on robot vacuums happen year-round. All of the vacuums in this guide regularly go on sale for under $500.
While I do have some good tips on how to make any robot vacuum work better, how do you ensure a cheap vacuum doesn't suck? By taking a recommendation from someone who's tested them personally. I'm regularly testing budget robot vacuums in my own apartment, actively keeping the "bang for your buck" mentality in mind. So, here are my picks for the best budget robot vacuum to buy in 2025.
Other robot vacuums I've tested recently
I have tested several other inexpensive robot vacuums in the past that didn't make the most recent cut for this list. These include older models like the Eufy L60, Roomba 694, the Roomba Combo Essential 2, and Shark Matrix RV2300, which have simply been overshadowed by other (often newer) vacuums that offer more suction power and smarter features in the same budget price range.
One comparison that sticks out is the Roomba 205 DustCompactor versus the 3i G10+, which both "self-empty" without a self-emptying dock. However, I wasn't psyched on my experience with the Roomba 205 — it got stuck on rug corners and got lost too often. Plus, the 3i G10+ offers more advanced features like small obstacle and pet waste avoidance and a livestream pet camera, whereas the Roomba 205 doesn't.
