Robot Vacuums · Head to head

Dreame L40s Ultra vs iRobot Roomba Plus 515 Combo Robot + AutoWash Dock

Full Robot Vacuums comparison in 2026

Updated September 2026
Data from Amazon and official Dreame and iRobot sites.
2026 verdict
iRobot Roomba Plus 515 Combo Robot + AutoWash Dock wins the 2026 matchup against Dreame L40s Ultra, mainly on rating, battery life, and connectivity.
iRobot Roomba Plus 515 Combo Robot + AutoWash Dock
Winner
iRobot Roomba Plus 515 Combo Robot + AutoWash Dock
$599.99$699.9914% OFF
Buy on Amazon USACheck price
It wins the broader comparison through rating, battery life, and connectivity, while suction power helps confirm the result. There is still a case for Dreame L40s Ultra, but mainly if price, warranty, and integrations are what you value most. Overall, iRobot Roomba Plus 515 Combo Robot + AutoWash Dock makes more sense for most people.
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FeatureDreame L40s UltraiRobot Roomba Plus 515 Combo Robot + AutoWash DockWinner
Price$499.99$599.99Dreame L40s Ultra
Rating3.94.2iRobot Roomba Plus 515 Combo Robot + AutoWash Dock
Warranty3 years1 yearDreame L40s Ultra
Battery Life220 minutes295 minutesiRobot Roomba Plus 515 Combo Robot + AutoWash Dock
Connectivity2.4 GHz WiFi2.4 GHz WiFi, 5 GHz WiFiiRobot Roomba Plus 515 Combo Robot + AutoWash Dock
IntegrationsGoogle Home, Alexa, Home AssistantGoogle Home, AlexaDreame L40s Ultra
Suction Power19000Pa22000PaiRobot Roomba Plus 515 Combo Robot + AutoWash Dock
Auto RechargeYESYESTie
Navigation TypeLaser (LiDAR)Laser (LiDAR)Tie
Obstacle DetectionYESYESTie
Cliff DetectionYESYESTie
Multi-Room MappingYESYESTie

Frequently Asked Questions

Which is better overall: Dreame L40s Ultra or iRobot Roomba Plus 515 Combo Robot + AutoWash Dock?

iRobot Roomba Plus 515 Combo Robot + AutoWash Dock has the stronger overall profile in this comparison, especially for rating, battery life, and connectivity.

What is the biggest difference between Dreame L40s Ultra and iRobot Roomba Plus 515 Combo Robot + AutoWash Dock?

Price is one of the clearest differences: Dreame L40s Ultra lists $499.99, while iRobot Roomba Plus 515 Combo Robot + AutoWash Dock lists $599.99.

Which one looks better on price?

Dreame L40s Ultra is listed at $499.99, while iRobot Roomba Plus 515 Combo Robot + AutoWash Dock is listed at $599.99. Dreame L40s Ultra (better spec).

Who should buy Dreame L40s Ultra?

Choose Dreame L40s Ultra if your priority is price and warranty and that matters more than rating.

Who should buy iRobot Roomba Plus 515 Combo Robot + AutoWash Dock?

Choose iRobot Roomba Plus 515 Combo Robot + AutoWash Dock if your priority is rating and battery life and that matters more than price.

Full comparison table

Compare all 151 Robot Vacuums side by side

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