Tikom G8000 Max is the top pick among robot vacuums under $400, rated 4.3 stars across 4,935 customer reviews.
15% OFF
G8000 Max
4.3(4.9K)$109.99$129.99
31% OFFD20 Air Plus
4.2(3.8K)$239.99$349.99
20% OFFD20 Pro Plus
4.2(3.8K)$319.96$399.99
50% OFF
Roomba 105
4.1(33.2K)$149.00$299.99
16% OFF
L8000 Plus
4.4(629)$209.99$249.99
17% OFFQ7 M5+
4.0(18K)$299.99$359.99
36% OFFQ7 L5
4.0(18K)$159.99$249.99
49% OFFAV2501S AI Ultra Robot Vacuum
4.0(8.6K)$279.99$549.99
14% OFFL10s Ultra Gen 2
4.1(979)$379.87$439.99
44% OFF
Roomba 105 Combo
4.0(807)$179.99$319.99- News by email
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Freo X Plus
4.0(590)$336.42

DEEBOT T50 PRO Omni
4.2(299)$399.99

Roomba Combo Essential Robot
3.6(2.4K)$155.99

K11+
3.9(321)$239.99
67% OFFMatrix Plus 2-in-1
3.4(4.7K)$229.99$699.99
Matrix Plus UR2650WS
3.4(4.7K)$290.00

DEEBOT T30C
3.6(689)$391.99
40% OFFQ10 S5+
3.4(1.7K)$329.99$549.99
27% OFFPowerDetect Self-Empty
3.8(297)$399.99$549.99

Roomba Vac Essential Robot
3.3(3.1K)$249.99
19% OFF
Roomba Combo i5 Robot Vacuum and Mop
3.3(1.9K)$284.99$349.99
52% OFFPowerDetect 2-in-1
3.4(765)$399.99$829.00
Q7 M5
3.5(284)$229.99
10% OFF
S20
3.2(75)$359.99$399.99
33% OFF

K11+ Pro
4.0(12)$269.99$399.99
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Frequently asked questions
What are the best robot vacuums under $400?
Tikom G8000 Max, Dreame D20 Air Plus and Dreame D20 Pro Plus lead our ranking of robot vacuums under $400, ordered by customer rating weighted by how many reviews back it. The full list compares 26 products in this price range.
How many robot vacuums cost less than $400?
This page tracks 26 robot vacuums under $400 from 8 brands, with prices starting at $109.99.
Are these prices up to date?
Prices are re-checked continuously, so every card shows the latest price we have. A product whose price rises above $400 drops off this list on the next update.
Looking for more than $400?
See all the robot vacuums in the catalog, compared side by side on specs, price and rating.
