Which is better on carpet — Dyson 360 Vis Nav or Roborock S8 Pro Ultra?

The Dyson 360 Vis Nav is better on carpet. Its full-width brush bar covers the entire floor width in each pass, eliminating the strip left by conventional side-brush designs. On UK pile carpet in our bench tests, the Dyson removed 12% more debris than the Roborock in the same number of passes. The Roborock is a strong performer on carpet but was designed with the European hard-floor mopping market in mind.

Is the Dyson 360 Vis Nav worth the extra £80–£120 over the Roborock S8 Pro Ultra used?

Only if mopping is not a requirement. The Roborock S8 Pro Ultra does more than the Dyson — vacuum plus mop plus an autonomous dock — for less money. Paying more for the Dyson only makes sense if carpet performance is your primary criterion, you have no hard floors to mop, and you want Dyson's service and support network.

Do both models hold their resale value well?

The Dyson 360 Vis Nav holds value better proportionally, losing around 30–45% in year one versus the Roborock's 35–47%. Dyson's brand floor in the UK keeps used prices elevated. Both are strong used buys at the right price — the Roborock offers more capability per pound, the Dyson offers a stronger long-term support safety net.

Robot vacuum comparison

Dyson 360 Vis Nav vs Roborock S8 Pro Ultra — Which to Buy Used?

Last updated 5 November 2026

The Dyson 360 Vis Nav (£550–£700 used) and the Roborock S8 Pro Ultra (£480–£580 used) are the two most-discussed premium robot vacuums in the UK. They are fundamentally different machines: the Dyson is vacuum-only with a full-width brush bar and 360-degree navigation; the Roborock combines vacuuming with active mopping and an auto-clean dock. The Dyson outperforms on carpet; the Roborock wins on hard floors and convenience.

Robot vacuum

Dyson 360 Vis Nav

Used price (UK)£550–£700

Retail (new)£999

Bench score8.6 / 10

Resale index90.4(-4.2% YoY)

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Robot vacuum & mop

Roborock S8 Pro Ultra

Used price (UK)£580–£720

Retail (new)£1,099

Bench score9.1 / 10

Resale index91.8(-8.2% YoY)

Full price guide →

How they compare

Aspect	Dyson 360 Vis Nav	Roborock S8 Pro Ultra
Type	Robot vacuum only	Robot vacuum + mop✓
Bench score	8.6 / 10	9.1 / 10✓
Used price (UK)	£550–£700	£480–£580✓
Retail price (new)	£999	£899✓
Navigation	360° fisheye panoramic camera	Lidar + forward camera
Brush system	Full-width brush bar — covers entire floor width per pass✓	Side brush + main roller brush
Mopping	None	Active sonic mop with auto-lift on carpet✓
Auto dock	Charging only	Self-empty + self-wash + self-refill✓
Carpet performance	Excellent — full-width bar on UK carpet✓	Good — but mop pad removal adds complexity
Brand support (UK)	Dyson service centres + direct parts✓	Roborock UK support + third-party parts
Best for	Carpet-heavy homes, UK breed, Dyson loyalty	Mixed hard floor/carpet, mopping required

Which should you buy?

Choose Dyson 360 Vis Nav

Choose the Dyson 360 Vis Nav if your home has significant carpet area, particularly UK-style pile carpet where the full-width brush bar makes a noticeable difference. Dyson's UK service network and direct parts supply also make it the lower-risk choice for a used purchase. Budget £580–£650 for a unit with current firmware.

Choose Roborock S8 Pro Ultra

Choose the Roborock S8 Pro Ultra if you have hard floors that need mopping, or if you want the most autonomous floor-care system — vacuum, mop, and dock that empties, washes, and refills itself. At £480–£540 used it is £80–£150 less than the Dyson and delivers more total capability per pound.

Bottom line

For carpet-first UK homes wanting a vacuum-only machine, the Dyson 360 Vis Nav justifies its price premium. For any home with meaningful hard floor area, or any buyer who wants mopping capability, the Roborock S8 Pro Ultra wins on value and functionality.

For sale now

Dyson 360 Vis Nav

£550–£700 used

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Roborock S8 Pro Ultra

£580–£720 used