Everyone in this category says they tested twenty vacuums. We have not tested any, and we say so. What we do instead is read the manuals, compile the published specifications, and work out what each machine costs to run for three years — the method is written out in full.
We earn a commission if you buy through the links on this page, at no extra cost to you. It never changes what we recommend or the order we recommend it in. Full disclosure.
Mapping is worth paying for. Obstacle avoidance mostly is not, at this price. LiDAR builds the map that makes cleaning efficient and zones possible — buy that. The camera-based object recognition that dodges socks and cables lives above $400 and is not published on any machine here. What budget robots publish is collision and drop sensing, which is a different, smaller thing.
Three technologies, one marketing phrase
LiDAR is a spinning laser that measures distance in 360 degrees. It builds a floor plan, which is what enables efficient row cleaning, multi-floor maps, room targeting and no-go zones. The Roomba 105 Vac publishes ClearView LiDAR; Roborock publishes 360-degree and PreciSense LiDAR; Lefant's M2 Plus and ILIFE's A30 Pro publish LDS LiDAR with SLAM. This is the feature worth buying.
Infrared and bumper sensing detects that something is there when the robot is nearly touching it, and turns. Lefant publishes "FreeMove 3.0" with 6D anti-collision infrared on the M210; eufy publishes an infrared sensor and drop-sensing on the 11S MAX. This prevents damage. It does not plan around anything.
PSD proximity detection sits between the two. Lefant publishes it on the M2 Plus: a 190-degree detection angle, stated to identify and avoid objects from 1.6 inches away. That is close-range avoidance rather than the see-it-across-the-room object recognition that the phrase implies.
What LiDAR genuinely buys you
Efficient coverage. Rows instead of a random walk, which on a large floor is the difference between finishing and running out of battery.
No-go zones. The ability to say "never go behind the toilet" or "stay away from the cat bowls" without physically blocking the route.
Room targeting. Cleaning the kitchen after dinner without running the whole house.
Multi-floor maps. Roborock and Lefant both publish this; it is what makes a robot workable in a two-story home.
Recharge and resume. Only possible if the robot knows where it stopped.
Roborock also publishes something quietly useful on the Q7 L5: it identifies areas like cables and table legs and suggests no-go zones rather than requiring you to notice the problem yourself. That is a sensible middle ground between full recognition and nothing.
When the cheap sensor is genuinely enough
A single-floor apartment under about 800 square feet, tidied before the robot runs, does not need a map. The eufy 11S MAX and the Lefant M210 will cover that floor by persistence rather than by planning, and they publish two advantages the mapped machines do not: bigger bins (600 ml and 500 ml, against the Roborock Q7 L5's 270) and lower noise (55 and 52 dB, against 60 to 72).
There is also the eufy's genuine no-app design. No account, no firmware update, nothing that stops working the day a cloud service is retired. For a machine you want to still work in ten years, that is not nothing.
#
Product
Best for
Score
Price
01
iRobot Roomba 105 VacLiDAR mapping, keep-out zones and a 200-minute rating from the brand that will still be supporting the app in five years.
Roborock Q7 L5 Robot Vacuum and Mop8,000 Pa, 360-degree LiDAR and dual anti-tangle brushes — the most specified sheet at this price, with a 270 ml tank that is the catch.
Scores are ours, from the published rubric on the How We Pick page. They are editorial judgments about published specifications — not test results. We have not handled these machines.
01 · Best mapping under $300
iRobot Roomba 105 Vac
LiDAR mapping, keep-out zones and a 200-minute rating from the brand that will still be supporting the app in five years.
70x more power-lifting suction, compared by the manufacturer against the Roomba 600 series
Control
Roomba Home app, on-device buttons, voice assistants
Wi-Fi
2.4 GHz required for setup and operation
Suction in Pa
Not published
Every figure above is the manufacturer's own published number. Where a manufacturer publishes nothing, the row says "Not published" rather than an estimate.
What the numbers say
+200 minutes rated, the longest published runtime of any robot on this site
+Real LiDAR mapping, keep-out zones and room targeting at a budget price
+Recharge-and-resume, so a large floor completes without you
+iRobot's app and parts supply are the most durable bet in the category
Where it stops
−The 70x suction claim is measured against iRobot's own decade-old 600 series, not against a competitor
−No self-empty dock in this configuration — you empty the on-board bin
−No published bin volume
Who it is for
Multi-room homes that want scheduled, mapped cleaning without a self-empty dock's price.
Skip it if
Nobody in the house will install an app. Half of what you are paying for is mapping, zones and scheduling, and none of that exists without the phone.
Our score: 8.0 out of 10
Published suction6.5
Navigation9.0
Runtime10.0
Bin and dock6.0
Running cost7.5
Scored against the published rubric on How We Pick. These are judgments about spec sheets, not measurements.
02 · Cheapest self-empty
Lefant M2 Plus Robot Vacuum and Mop
6,000 Pa, LiDAR mapping and a 2.5-liter self-empty station rated at 75 days, from the least-known brand here.
2.5 liters, rated up to 75 days hands-free; ships with two bags
Dustbin
250 ml on-robot
Water tank
300 ml, three suction levels
Navigation
360-degree LiDAR with multi-floor mapping and no-go zones
Obstacle detection
190-degree PSD detection, stated to avoid objects from 1.6 inches away
Wi-Fi
Dual-band 2.4 GHz and 5 GHz
Every figure above is the manufacturer's own published number. Where a manufacturer publishes nothing, the row says "Not published" rather than an estimate.
What the numbers say
+Self-empty dock at the bottom of the price band, which is where the genuine saving is in this category
+Carpet detection lifts or avoids depending on whether the mop holder is fitted
+Dual-band Wi-Fi — the only robot here that does not force you onto 2.4 GHz
+Two dock bags in the box
Where it stops
−6,000 Pa is the lowest published suction of the self-empty machines here
−250 ml on-robot bin is tiny, which the dock only partly excuses
−Small brand: app longevity and dock-bag availability in year four are unknowns
Who it is for
Buyers who want self-emptying at the lowest possible entry price and accept the brand risk.
Skip it if
You want the app to still work in 2032. iRobot and Roborock are safer bets on software support, and a self-empty robot is worthless once its dock bags stop being sold.
Our score: 7.7 out of 10
Published suction7.0
Navigation8.5
Runtime8.5
Bin and dock8.5
Running cost6.0
Scored against the published rubric on How We Pick. These are judgments about spec sheets, not measurements.
03 · Best published suction under $300
Roborock Q7 L5 Robot Vacuum and Mop
8,000 Pa, 360-degree LiDAR and dual anti-tangle brushes — the most specified sheet at this price, with a 270 ml tank that is the catch.
360-degree LiDAR with multi-floor maps and no-go zones
Brushes
Anti-tangle main brush plus zero-tangle side brush
Rated noise
60 dB
Wi-Fi
2.4 GHz only
Every figure above is the manufacturer's own published number. Where a manufacturer publishes nothing, the row says "Not published" rather than an estimate.
What the numbers say
+Publishes a suction figure, unlike most of the field
+Dual anti-tangle brushes — both main and side, which most brands only claim for one
+Multi-floor mapping stored on the robot, so it works in a two-story house
+Vacuums and mops in the same pass
Where it stops
−270 ml dustbin is less than half the eufy 11S MAX's, so it fills fast in a pet home
−Pa figures are not comparable across brands and Roborock does not publish their method
−No self-empty dock in this configuration
Who it is for
Multi-floor homes that want proper mapping and are willing to empty a small bin.
Skip it if
You have shedding pets and no self-empty dock. A 270 ml bin in a dog house is a daily chore, and the Q7 M5+ exists specifically to fix that.
Our score: 7.8 out of 10
Published suction8.5
Navigation9.0
Runtime8.5
Bin and dock5.0
Running cost7.5
Scored against the published rubric on How We Pick. These are judgments about spec sheets, not measurements.
04 · Quietest robot here
Lefant M210 Robot Vacuum
52 dB and 2.99 inches tall, with a brushless suction port that sidesteps hair tangle by not having a brushroll at all.
Up to 120 minutes in low suction mode, manufacturer-stated
Height
2.99 inches
Diameter
11 inches
Dustbin
500 ml
Rated noise
52 dB
Suction port
Brushless — no roller brush
Navigation
FreeMove 3.0, 6D infrared anti-collision — no LiDAR mapping
Battery
Lithium iron phosphate
Suction in Pa
Not published
Every figure above is the manufacturer's own published number. Where a manufacturer publishes nothing, the row says "Not published" rather than an estimate.
What the numbers say
+Brushless port cannot tangle, because there is nothing to tangle on — the only true fix for long hair
+52 dB is the quietest published figure on this site
+11-inch diameter gets between chair legs a 13-inch robot cannot
+Lithium iron phosphate chemistry is more cycle-durable than standard lithium-ion
Where it stops
−No brushroll also means no agitation, so carpet pickup is weak by design
−The 120-minute figure is explicitly the low-suction number
−No LiDAR mapping
Who it is for
Hard-floor homes with long-haired occupants or pets, and anyone who has cut hair off a robot brushroll once too often.
Skip it if
You have carpet you actually want cleaned. Without a brushroll it lifts surface debris and leaves embedded grit; this is a hard-floor machine.
Our score: 6.6 out of 10
Published suction4.0
Navigation4.0
Runtime9.0
Bin and dock6.5
Running cost9.5
Scored against the published rubric on How We Pick. These are judgments about spec sheets, not measurements.
05 · Best under $150
eufy 11S MAX Robot Vacuum
No app, no LiDAR, 100 minutes and 55 dB — the cheapest robot on this site and the one with the fewest things to go wrong.
Infrared obstacle sensing and drop sensors — no mapping
Connectivity
None. Manufacturer states no Wi-Fi and no app; remote control and on-device buttons only
Filter
Washable
Suction in Pa
Not published
Every figure above is the manufacturer's own published number. Where a manufacturer publishes nothing, the row says "Not published" rather than an estimate.
What the numbers say
+600 ml bin, the largest on-robot bin here, which matters when there is no self-empty dock
+55 dB rated, quiet enough to run while you are in the room
+2.85 inches tall, so it fits under more furniture than most
+No app means no account, no firmware updates, and nothing to stop working when a server retires
Where it stops
−No mapping — it cleans in a semi-random pattern and takes longer to cover a room
−No no-go zones, no room targeting, no scheduling from a phone
−Single side brush
−No published suction figure at all
Who it is for
One-floor apartments, mostly hard floor, where the job is daily dust and pet hair rather than a scheduled whole-house clean.
Skip it if
You have more than about 800 square feet or several rooms. Without mapping it will miss areas, and you will not be able to tell it not to.
Our score: 6.6 out of 10
Published suction4.5
Navigation3.5
Runtime9.0
Bin and dock7.0
Running cost9.0
Scored against the published rubric on How We Pick. These are judgments about spec sheets, not measurements.
The published comparison
What each machine publishes about how it perceives your floor.
Machine
Navigation published
Zones
Multi-floor maps
Roomba 105 Vac
ClearView LiDAR, cliff sensors
Keep-out zones
Not published
Roborock Q7 L5
360-degree LiDAR, suggests no-go zones for cables and table legs
No-go zones
Yes, multiple maps
Lefant M2 Plus
360-degree LiDAR plus 190-degree PSD, avoids from 1.6 in
No-go zones
Yes
ILIFE A30 Pro
LDS LiDAR with SLAM
No-go zones and virtual walls
Not published
Lefant M210
FreeMove 3.0, 6D infrared anti-collision
None
No
eufy 11S MAX
Infrared obstacle sensing, drop sensors
None
No
How to decide
Ask what you actually want the robot to stop doing. If the answer is "missing the back bedroom", buy LiDAR. If it is "going into the room with the dog's water bowl", buy LiDAR — you need zones. If it is "eating a phone charger", no machine at this price is published to solve that, and the honest fix is picking the charger up.
What we cannot tell you
How well any of these navigate in practice. Published LiDAR is not the same as good path planning, and implementations differ enormously between manufacturers who all describe them in identical marketing language. Nobody publishes a coverage-efficiency figure, nobody publishes a stuck-rate, and we have not run any of these machines across a real floor.
Common questions
Do budget robot vacuums avoid obstacles?+−
They detect and turn away from them, which is not the same thing. Budget robots publish infrared or PSD collision sensing; camera-based object recognition — identifying a sock or a cable as an object to route around — is not published on any machine in this price band.
Is LiDAR worth it on a robot vacuum?+−
Yes, more than any other feature at this price. It is what enables efficient coverage, no-go zones, room targeting, multi-floor maps and recharge-and-resume. Everything else is a preference; this changes the class of machine.
Will a robot vacuum avoid pet accidents?+−
Not at this price. Avoiding a specific hazard by recognizing what it is requires camera-based object recognition, and none of the robots on this site publish that capability. If that is the reason you are buying, this tier does not solve it.
Do I need no-go zones?+−
If there is any part of your floor a robot should never enter — a pet feeding station, a cable nest, a room with fragile things — then yes, and that means LiDAR. Zones only exist where there is a map to draw them on.
Are unmapped robot vacuums a waste of money?+−
No. In a single-floor space under about 800 square feet they cover the floor by persistence, and they publish two genuine advantages: bigger on-board bins (600 ml on the eufy against 270 on the mapped Roborock) and lower noise (52 to 55 dB against 60 to 72).
Sources
Manufacturer-published specifications — Every runtime, wattage, capacity, weight, filtration and warranty figure quoted on this page is the manufacturer's own published number for that model, retrieved September 1, 2026. Where a manufacturer publishes no figure, the page says 'Not published' rather than estimating one.
Sweep & Suction — How We Pick — Our published method, including the scoring rubric, the three-year running-cost formula and an explicit statement of what published specifications cannot tell you.
