Robot Vacuums · Head to head

iRobot Roomba Plus 515 Combo Robot + AutoWash Dock vs Roborock Saros 20 Sonic

Full Robot Vacuums comparison in 2026

Updated October 2026
Data from Amazon and official iRobot and Roborock sites.
2026 verdict
If dual-band Wi-Fi and top-tier suction are the priority, the Roborock Saros 20 Sonic wins this matchup.
Roborock Saros 20 Sonic
Winner
Roborock Saros 20 Sonic

Last recorded priceOct 1, 2026$1499.99

Currently unavailable on Amazon USA
See on Amazon USA
It is rated at 36,000 Pa against 22,000 Pa on the iRobot Roomba Plus 515 Combo Robot + AutoWash Dock, connects on 2.4 GHz and 5 GHz plus Bluetooth, and supports Alexa, Google Home, Apple Home, SmartThings, Home Assistant and Matter, where the iRobot is 2.4 GHz only and limited to Alexa and Google Home. The iRobot Roomba Plus 515 Combo Robot + AutoWash Dock answers with the lower price, a longer documented run at 200 minutes against 190, and a body that sits lower. Pick the Roborock Saros 20 Sonic for suction and connectivity, and the iRobot Roomba Plus 515 Combo Robot + AutoWash Dock for value and run time.
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FeatureiRobot Roomba Plus 515 Combo Robot + AutoWash DockRoborock Saros 20 SonicWinner
Battery Life200 minutes190 minutesiRobot Roomba Plus 515 Combo Robot + AutoWash Dock
Connectivity2.4 GHz WiFi, Bluetooth2.4 GHz WiFi, 5 GHz WiFi, BluetoothRoborock Saros 20 Sonic
IntegrationsGoogle Home, AlexaGoogle Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, MatterRoborock Saros 20 Sonic
Suction Power22000Pa36000PaRoborock Saros 20 Sonic
Rating4.24.2Tie
Warranty1 year1 yearTie
Auto RechargeYESYESTie
Navigation TypeLaser (LiDAR)Laser (LiDAR)Tie
Obstacle DetectionYESYESTie
Cliff DetectionYESYESTie
Multi-Room MappingYESYESTie
No-Go ZonesYESYESTie

What the differences mean

Suction

The Roborock Saros 20 Sonic is rated at 36,000 Pa and the iRobot Roomba Plus 515 Combo Robot + AutoWash Dock at 22,000 Pa, so the Roborock has the edge on carpet and embedded pet hair, while the iRobot is already capable for this tier on hard floors and low rugs.

Wi-Fi bands

The Roborock Saros 20 Sonic joins 2.4 GHz and 5 GHz Wi-Fi. The iRobot Roomba Plus 515 Combo Robot + AutoWash Dock is 2.4 GHz only (both carry Bluetooth), so a 5 GHz-only network will not pair and setup is the most common frustration for its owners.

Smart home support

The Roborock Saros 20 Sonic supports Alexa, Google Home, Apple Home, SmartThings, Home Assistant and Matter. The iRobot Roomba Plus 515 Combo Robot + AutoWash Dock works with Alexa and Google Home only, so Apple Home, SmartThings and Matter are not available.

Run time and height

The iRobot Roomba Plus 515 Combo Robot + AutoWash Dock is rated for about 200 minutes against 190 on the Roborock Saros 20 Sonic, so it runs longer on paper. The Roborock sits lower at 79.8 mm against 84 mm, so it clears tighter gaps under low furniture.

Detergent and dock

The Roborock Saros 20 Sonic washes and dries its mop and dispenses cleaning solution automatically from a 4 L tank. The iRobot Roomba Plus 515 Combo Robot + AutoWash Dock washes and heat-dries its pads but has no automatic detergent dispenser, so solution is measured and added by hand.

Which one to buy if

iRobot

iRobot Roomba Plus 515 Combo Robot + AutoWash Dock

14% OFF
Prime exclusive deal
$599.00
$699.99

Last recorded price

Buy on Amazon USA
  • + Battery Life: 200 minutes
  • - Connectivity: 2.4 GHz WiFi, Bluetooth vs 2.4 GHz WiFi, 5 GHz WiFi, Bluetooth
  • - Integrations: Google Home, Alexa vs Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter
Winner
Roborock

Roborock Saros 20 Sonic

Prime exclusive deal

Last recorded priceOct 1, 2026$1499.99

Currently unavailable on Amazon USA
See on Amazon USA
  • + Connectivity: 2.4 GHz WiFi, 5 GHz WiFi, Bluetooth
  • + Integrations: Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter
  • + Suction Power: 36000Pa
  • - Battery Life: 190 minutes vs 200 minutes

What owners say

Owners of the iRobot Roomba Plus 515 Combo Robot + AutoWash Dock describe it as a strong vacuum with a self-maintaining dock, which is exactly what they wanted. Suction earns the most praise for pet hair, crumbs and dust on wood, tile, vinyl and low rugs, the LiDAR map is accurate for most buyers, and the dock empties the bin and washes and heat-dries the pads on its own. Their recurring complaints are the mop, which is only decent and can snag on cords, the 2.4 GHz-only Wi-Fi that made setup frustrating for several owners, a loud self-emptying cycle, and a dirty water tank that needs emptying promptly to avoid smells.

Price history compared

Every price change of both, in the same store, so the gap between the two lines is what one costs more than the other.

  • iRobot Roomba Plus 515 Combo Robot + AutoWash Dock
  • Roborock Saros 20 Sonic

Loading price history...

Frequently Asked Questions

Which is better, the iRobot Roomba Plus 515 Combo Robot + AutoWash Dock or the Roborock Saros 20 Sonic?

For suction and connectivity, the Roborock Saros 20 Sonic, with 36,000 Pa, 5 GHz Wi-Fi and support for Apple Home, SmartThings and Matter. The iRobot Roomba Plus 515 Combo Robot + AutoWash Dock is the value pick, with the lower price and a longer documented run.

What is the biggest difference between the iRobot Roomba Plus 515 Combo Robot + AutoWash Dock and the Roborock Saros 20 Sonic?

Suction and wireless support. The Roborock Saros 20 Sonic is rated at 36,000 Pa with 2.4 GHz and 5 GHz Wi-Fi plus Bluetooth, while the iRobot Roomba Plus 515 Combo Robot + AutoWash Dock is rated at 22,000 Pa and 2.4 GHz only.

Do the iRobot Roomba Plus 515 Combo Robot + AutoWash Dock and the Roborock Saros 20 Sonic empty and wash themselves?

Yes. Both docks empty the bin and wash, lift and dry the mop. The Roborock Saros 20 Sonic also refills and dispenses detergent automatically, while the iRobot Roomba Plus 515 Combo Robot + AutoWash Dock requires detergent to be added by hand.

Which robot supports more smart home platforms, the iRobot Roomba Plus 515 Combo Robot + AutoWash Dock or the Roborock Saros 20 Sonic?

The Roborock Saros 20 Sonic supports Alexa, Google Home, Apple Home, SmartThings, Home Assistant and Matter. The iRobot Roomba Plus 515 Combo Robot + AutoWash Dock supports Alexa and Google Home only.

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

Buyers who want a lower price and the longest documented run, mostly cleaning hard floors and low rugs, within an Alexa or Google Home household, and who value the reliable AutoWash dock over maximum suction.

Who should buy the Roborock Saros 20 Sonic?

Homes with carpet that want maximum suction, buyers who need 5 GHz Wi-Fi or Apple Home, SmartThings and Matter support, and anyone who wants a lower body and automatic detergent dosing at the dock.

Full comparison table

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