Best Robot Vacuums Under $400 Ranked

For carpet and pet homes that want Shark’s PowerDetect cleaning features in a vacuum-only robot for about $400.

For vacuum-only buyers who want a bagless self-emptying dock; newer Shark models clean longer for similar money.

A no-frills LiDAR vacuum with a bagless self-empty base for people who don’t need mopping and want to stay under $500.

For carpet-heavy or pet homes that want a vacuum-only Roomba with camera obstacle avoidance and a 90-day bagged dock.

A budget self-emptying LiDAR vacuum for hard floors and low carpet in homes without pets; its poor pet hair score rules it out for shedding animals.

For carpeted homes on a budget that want long runs and a self-emptying dock; skip it if you need real mopping or obstacle avoidance.

A basic self-emptying LiDAR robot for vacuuming; since it is hard to find new, the T50 Max Pro Omni is the better buy.

A budget self-emptying LiDAR vacuum for tidy homes; skip it if you want real mopping or obstacle avoidance.

A cheap self-emptying LiDAR robot for small homes that mostly want vacuuming. Light mopping is a bonus, not a reason to buy it.

A long-running self-emptying vacuum with obstacle avoidance for carpet-heavy homes on a budget; get a washing dock if you mop a lot.

For budget buyers who want self-emptying, LiDAR mapping and obstacle avoidance, with mopping only as a light extra.

A cheap self-emptying vacuum-mop for small homes that mainly want hands-off vacuuming; yeedi publishes little about it.

A budget pick for everyday vacuuming with light mopping, best for buyers who don’t mind rinsing the pad themselves.

A low-cost way into self-emptying LiDAR vacuums for homes that only need light mopping.

For budget buyers who mostly want hands-off vacuuming with a self-empty dock and LiDAR mapping.

For small, hard-floored homes on a tight budget that want LiDAR mapping; pet owners and carpeted homes should look elsewhere.

For budget buyers who want LiDAR mapping and strong suction, and don’t mind emptying the bin by hand.

A lower-cost version of the D30 Ultra for hard-floor homes that want a washing dock on a budget.

MOVA’s cheapest self-cleaning dock robot, for small hard-floor homes that want hands-off mopping on a tight budget.

For budget buyers who want hot-water mop washing and an extending mop more than strong suction.

A budget all-in-one dock robot that slips under low furniture, for smaller hard-floor homes that don’t need top suction.

A cheaper L40s with a full self-cleaning dock, for homes that want hands-off mopping on a budget and can live without hot-water washing.

For budget buyers who want a full self-emptying, mop-washing dock and an extending mop at the lowest price.

A budget all-in-one dock robot for hard-floor homes with pets; its carpet deep cleaning is weak and ECOVACS publishes few US specs.

For pet owners who want camera obstacle avoidance and a mop that never touches carpet; check availability first, as it is now hard to find new.

For buyers who want strong suction and a hot-wash mop dock for under $700, and can live without extending mops.

The cheapest way into a dock that washes the mops, for small homes with low furniture. Its weak carpet cleaning and short range rule it out for bigger or carpeted homes.