Roborock S8 Max Ultra vs Roborock Saros Z70: Which to Buy

The Roborock Saros Z70 is the better robot vacuum overall, rated 3.5 to 3.4. The Roborock Saros Z70 leads on mopping and navigation. The Roborock S8 Max Ultra costs $49.99 less ($949.99 vs $999.98).

Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.

Higher rated

Roborock Saros Z70

#100 in Self-cleaning dock3.5Full review

For early adopters who want a robot that tidies small clutter; buyers who just want clean floors get more for less elsewhere.

Amazon $999.98

$999.98

Roborock S8 Max Ultra

#102 in Self-cleaning dock3.4Full review

For buyers who can plumb in the dock and want a hands-off mopping robot that never needs its water tanks touched.

Amazon $949.99

$949.99

Which should you buy?

Choose the Roborock Saros Z70 for mopping (Dual spinning pads, leaves its mop at the dock for carpet, extends to edges vs Vibrating pad, lifts 20 mm, extends to edges) and navigation (LiDAR + camera vs LiDAR + 3D light).

Scores side by side

Each factor is scored 0-100 against the same fixed reference points for every self-cleaning dock robot vacuum; a clear win is highlighted. How we rank explains each one.

Factor weight	Roborock Saros Z70	Roborock S8 Max Ultra
Overall rating	3.5/5	3.4/5
Cleaning 30%	20 measured 67% of sand from carpet, 83% of pet hair, some hair tangled (0.5)	18 measured 72% of sand from carpet, 75% of pet hair, some hair tangled (0.6)
Value 25%	36 $1,000	39 $950
Dock 20%	100 Self-empties the bin, washes the mop, hot-water mop wash, hot-air mop drying, doses detergent, optional water hookup	100 Self-empties the bin, washes the mop, hot-water mop wash, hot-air mop drying, doses detergent, optional water hookup
Navigation 15%	100 LiDAR + camera	85 LiDAR + 3D light
Mopping 10%	86 Dual spinning pads, leaves its mop at the dock for carpet, extends to edges	62 Vibrating pad, lifts 20 mm, extends to edges

Independent tests

Roborock Saros Z70

Tested by	Carpet deep clean	Pet hair	Hair tangle (0 = none)	Area per charge	Conditions
Vacuum Wars	67%	83%	0.5	1,204 sq ft	Embedded sand in medium-pile carpet; flattened 2.5 in pet hair on carpet, two runs; 7 in hair tangle on hard floor (0 = none wrapped).