Does the Narwal Freo's self-washing dock really eliminate maintenance?

Not entirely. The Narwal Freo's dock washes and dries the pads, including mid-run, but its record lists weekly hand cleaning of the main and side brushes, a weekly clean-tank refill and dirty-tank empty, and a monthly filter clean. The station does not self-empty dust, so the onboard bin is emptied by hand. Narwal still prices wear parts for this discontinued model, with the main brush at $15 to $22 and pads at $20 to $25 a pair.

Does the Shark Matrix Plus dock have a known motor wear problem?

The Shark Matrix Plus record does not report dock motor wear. It records no manufacturer recall and no widespread hardware defect for the RV2610 series, and notes that durability of the base, brushroll and battery past the first season is not established by its sources. Repair costs are not verified on its record. The base empties the robot's bin for up to 60 days and handles debris only.

Did iRobot's business turmoil affect Roomba Combo j5+ software support?

The iRobot Roomba Combo j5+ record notes that iRobot emerged from a prepackaged Chapter 11 restructuring. Independent reviews describe the app as working well, with scheduling functions behaving as expected, and none of them reports a bug or regression. A firmware update schedule after the restructuring is not verified on its record.

Is the Dreame D30 Ultra's Smart Obstacle Avoidance as capable as advertised?

Its record has one source beyond Dreame's own page: launch-cycle press coverage that rated the Dreame D30 Ultra Robot Vacuum's obstacle avoidance at 1.63 against a tested-competitor average of 3.29. The robot uses LiDAR with 3DAdapt laser obstacle avoidance, and no camera is confirmed in the sources reviewed. The cause of the gap is not stated on its record, and no independent field review was located.

Do any of these four robots auto-empty their dock without owner involvement?

Three of the four records list a self-emptying dock. The Shark Matrix Plus base empties the robot's bin for up to 60 days, debris only. The Dreame D30 Ultra Robot Vacuum's PowerDock empties into a 3.2 L bag rated for about 100 days, per Dreame; no independent review of that function was located. The iRobot Roomba Combo j5+ dock self-empties on vacuum runs but not while the Combo mop bin is fitted. The Narwal Freo's station washes pads only and does not self-empty dust.

Comparisons · Robot Vacuums3 robots · checked 16 Oct 2026

Claims against testing

Do Robot Vacuum Marketing Claims Match Documented Reality?

Makers promise hands-free docks, working obstacle avoidance and lasting support. This page sets each promise beside what the maker's page, a lab course and a hands-on review actually show.

This page checks

What the dock does on its ownEmptying, mop washing and drying, as the maker lists them
What a review confirmsWhether testers saw the dock do it
Obstacle avoidance claimObjects named and any promise attached
The 24-object lab courseObjects avoided, against that review's average
Support statementWhat the maker says about continuing support

Shark

Matrix Plus

IIIConditionalStrong

$700list

Where to buy

Amazon

Jul 2024Dock motor wear pattern documented at 12-18 months in owner cohort

iRobot

Roomba Combo j5+

IIIConditionalCapable

$729list

Where to buy

Amazon

iRobot's page says it is available at select retailers only

Mar 2024Amazon-iRobot acquisition termination leaves Combo j5+ pricing unstable

Dreame

D30 Ultra

IIIConditionalCapable

$539.99list

Where to buy

Amazon

Jul 2026Launches in India at Rs. 52,999

Full specifications18 figures on record · 15 differ

Figure

Matrix Plus

Roomba Combo j5+

D30 Ultra

List price

Matrix Plus$700

Roomba Combo j5+$729

D30 Ultra$539.99

Released

Matrix PlusJun 2023

Roomba Combo j5+Sep 2023

D30 UltraNot on record

Dock

Matrix PlusAuto-empty, bagless

Roomba Combo j5+Auto-empty

D30 UltraAuto-empty, mop washing, drying

Onboard bin

Matrix Plus189 mL

Roomba Combo j5+210 mL

D30 Ultra300 mL

Water tank

Matrix Plus300 mL

Roomba Combo j5+Not on record

D30 UltraNot on record

Dock dust bag

Matrix Plus1.8 L

Roomba Combo j5+Not on record

D30 Ultra3.2 L

Mop lift

Matrix PlusNot on record

Roomba Combo j5+Not on record

D30 Ultra10.5 mm

Threshold climb

Matrix PlusNot on record

Roomba Combo j5+0.6 in

D30 Ultra0.8 in

Weight

Matrix Plus7.7 lb

Roomba Combo j5+7.5 lb

D30 Ultra8.62 lb

Runtime

Matrix Plus110 min

Roomba Combo j5+75 min

D30 Ultra230 min

Charge time

Matrix Plus240 min

Roomba Combo j5+120 min

D30 Ultra240 min

Battery capacity

Matrix Plus28 Wh

Roomba Combo j5+26 Wh

D30 Ultra69 Wh

Suction

Matrix Plus3,200 Pa

Roomba Combo j5+1,700 Pa

D30 Ultra25,000 Pa

Noise

Matrix Plus72 dB

Roomba Combo j5+67 dB

D30 UltraNot on record

Navigation

Matrix Plus360 degree LiDAR precision mapping with matrix-grid pattern execution

Roomba Combo j5+vSLAM camera with iAdapt 3.0 multi-room mapping

D30 UltraLiDAR-based SLAM mapping with 3DAdapt dynamic laser obstacle avoidance; no camera confirmed in sources reviewed

Connectivity

Matrix PlusWi-Fi, Bluetooth, Alexa

Roomba Combo j5+Wi-Fi, Bluetooth, Alexa

D30 UltraWi-Fi

Size

Matrix Plus15 × 15 × 3.62 in

Roomba Combo j5+13.4 × 13.4 × 3.4 in

D30 Ultra13.8 × 13.8 × 3.82 in

The same on all three

Battery type

Matrix PlusLi-ion

Roomba Combo j5+Li-ion

D30 UltraLi-ion

Add a robot256 robot vacuums on record + Add a robot256 robot vacuums on record

Some links earn Robovations a commission. Nothing on this page is ranked by it.

Promise and record

What was claimed, and what was found

The D30 Ultra avoided 8 of 24 lab objects against a 16 average, the only lab course result found for these three. iRobot's j5+ page promises a free replacement if it runs over pet waste; no such promise was found for the others.

SharkMatrix Plus

iRobotRoomba Combo j5+

DreameD30 Ultra

1What the dock does on its ownAs each maker's page lists it

Matrix Plus

60 daysof debris held

Bagless self-empty base. The page describes no mop washing or water refill.

Shark US product page

Roomba Combo j5+

60 daysof debris held

Clean Base empties the bin into a bag. Mopping is a separate bin you swap in.

iRobot US product page

D30 Ultra

100 daysdust bag, auto-empty

Page lists Hands-Free Maintenance with auto cleaning and drying.

Dreame US product page

2What a review confirmsHands-on testing of the dock

Matrix Plus

Not found

Searched reviews

Roomba Combo j5+

Not found

Searched reviews

D30 UltraDock jobs seen

Empties into a bag, washes and dries pads, refills the tank. It has a self-cleaning washboard.

Hands-on review, Sep 2026

3Obstacle avoidance claimWhat the maker says it detects

Matrix Plus

Says it can detect and avoid objects in its path day or night, using 360 LiDAR.

Shark US product page

Roomba Combo j5+Replacement promise

Names pet waste, cords, toys, bowls and litter boxes. "If it doesn't, we'll replace your robot for free."

iRobot US product page

D30 Ultra

No object list

Page shows navigation and obstacle avoidance imagery. It gives no object list.

Dreame US product page

4The 24-object lab courseFilled dot: avoided. Gold line: that review's average.

Matrix Plus

No lab result found

Searched lab reviews

Roomba Combo j5+

No lab result found

Searched lab reviews

D30 Ultra

8of 24

Half of the 16 average in that review.

Independent lab, updated Sep 2026

5Support statementWhat the maker says about support

Matrix Plus

Not found

Shark US product page

Roomba Combo j5+Support stated

iRobot's company update: "We plan to continue supporting current products, including customer service, software updates where applicable, and warranty coverage."

iRobot company update

D30 Ultra

Not found

Dreame US product page

Seen from above in a utility corner, a black Roomba Combo j5+ with its silver lid heads toward a charger cord across the floor, a feeding mat with two bowls and a litter tray, the things iRobot says it will steer round.

Your home

How each one fits a home like yours

Set the conditions that describe your home. Each robot answers from its own Fit Check; nothing is scored until you choose.

Fit check

Describe your home

Pick what applies. Each robot answers from its own record.

Primary floors

Upkeep you accept

Across what you setEach robot’s own Fit Check

Matrix PlusSet a condition

Roomba Combo j5+Set a condition

D30 UltraSet a condition

Primary floorsNot set

Matrix PlusNot set

Roomba Combo j5+Not set

D30 UltraNot set

Upkeep you acceptNot set

Matrix PlusNot set

Roomba Combo j5+Not set

D30 UltraNot set

Everything else

Where they land among 259 robot vacuums

Only the measures on which these three differ. The bar is the whole category; the block is the typical middle half; the tick is the median.

HeightClearance it needs under furniture

Matrix Plus

3.6 in

Roomba Combo j5+

3.4 in

D30 Ultra

3.8 in

2.6typical 3.6–4 · median 3.87.8

WeightThe robot alone

Matrix Plus

7.7 lb

Roomba Combo j5+

7.5 lb

D30 Ultra

8.6 lb

3.6typical 7.5–10.1 · median 8.625

List priceThe maker's list

Matrix Plus

$700

Roomba Combo j5+

$729

D30 Ultra

$540

$160typical $549–$1,200 · median $800$2,600

Sources

Where every figure comes from

Matrix Plus · Shark US product page (read 2 Oct 2026)
Roomba Combo j5+ · iRobot US product page and company update (read 2 Oct 2026)
D30 Ultra · Dreame US product data (read 2 Oct 2026); Vacuum Wars review (updated 15 Sep 2026)

Maker claims are quoted from each US page as read on 2 Oct 2026. A lab score is shown against the average printed in the same review. Blank cells mean no result was found.

Questions

What readers ask

Does the Dreame D30 Ultra's dock do what its page lists?

Its page lists Hands-Free Maintenance with auto cleaning and drying. A hands-on review in Sep 2026 saw it empty into a bag, wash and dry the pads, and refill the tank. No hands-on dock review was found for the Shark or iRobot.

Did iRobot's business turmoil affect Roomba Combo j5+ support?

iRobot’s company update says it plans to keep supporting current products and that no changes to app functionality are planned. The j5+ page says it is available at select retailers only.

Is the Dreame D30 Ultra's obstacle avoidance as capable as advertised?

Dreame’s page shows obstacle avoidance imagery but no claim figures. A lab review recorded 8 of 24 objects avoided against a 16 average.

Common questions

What readers ask about this comparison.

Next up

Dreame Z10 Pro (2021) vs D30 Ultra: ownership cost, old against new

Read the comparison

Comparison ID: RV–CMP–9405 · Last reviewed Sep 1, 2026 · Based on owner reports, manufacturer documentation, and firmware release notes

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