Robot Vacuum Comparison · UK 2026
Roborock Qrevo Curv vs Dreame X40 Ultra Complete

Specs, pros and cons compared side by side

Both the Roborock Qrevo Curv and the Dreame X40 Ultra Complete are robot vacuums with self-cleaning base stations. This head-to-head sets them side by side using the specs, pros and cons from our full reviews. Roborock specs for the Qrevo Curv come from Roborock’s help centre and CE manual; Dreame specs for the X40 Ultra Complete come from Dreame’s UK manual, with figures from Dreame’s US store page.

Quick verdict

Ad: we earn commission if you buy through the price buttons on this page. As an Amazon Associate I earn from qualifying purchases.

Roborock Qrevo Curv

Pick it for: 18,500Pa suction (the X40 Ultra Complete: 12,000Pa) · 75°C mop wash (the X40 Ultra Complete: 70°C) · Climbs thresholds up to 3 cm (the X40 Ultra Complete: about 2 cm)

Check latest priceat Amazon

Dreame X40 Ultra Complete

Pick it for: Automatic detergent dosing (on the Qrevo Curv, you add solution to the clean water tank)

Check latest priceat Amazon

Quick comparison

Spec Roborock Qrevo Curv Dreame X40 Ultra Complete
Suction 18,500Pa 12,000Pa
Navigation LDS + structured light and RGB camera LDS + 3D structured light, 120+ object types
Mopping Rotating mops, auto lift, FlexiArm extending mop MopExtend RoboSwing (4 cm), 10.5 mm lift, mop removal
Dock Empty, 75°C wash, warm-air dry, refill Empty (3.2L bag, 75 days), 70°C wash, hot-air dry, refill, solution
Runtime Not stated Not stated
Smart home Built-in voice assistant (others not stated) Alexa, Siri, Google
Roborock Qrevo Curv

Pros

  • 75°C hot-water mop wash
  • Climbs double-layer thresholds up to 4 cm
  • Side brush and mop both extend for edges
  • Built-in voice assistant and remote viewing

Cons

  • No automatic detergent dispenser listed
  • Roborock does not publish the runtime or tank sizes
  • Roborock’s sources don’t list Alexa, Google Home, Siri or Matter
Dreame X40 Ultra Complete

Pros

  • 70°C mop wash with four temperature levels
  • Avoids more than 120 types of object
  • Leaves its mops on the base station for vacuum-only cleans
  • Spare-parts kit with 12 mop pads and 3 dust bags

Cons

  • The TriCut brush is sold separately
  • Dreame doesn’t give a runtime
  • Its manual says it can’t climb thresholds higher than about 2 cm

As an Amazon Associate I earn from qualifying purchases.

Which should you buy?

Why choose the Roborock Qrevo Curv

  • 18,500Pa suction (the X40 Ultra Complete: 12,000Pa)
  • 75°C mop wash (the X40 Ultra Complete: 70°C)
  • Climbs thresholds up to 3 cm (the X40 Ultra Complete: about 2 cm)
Why choose the Dreame X40 Ultra Complete

  • Automatic detergent dosing (on the Qrevo Curv, you add solution to the clean water tank)

Related comparisons