The Roborock Qrevo S Pro is now $100 cheaper than the Dreame L40 Ultra Gen 2, at $399.99 versus $499.98 on Amazon on Oct 17, 2026. That shifts a matchup between two mid-range docks that both vacuum, mop and wash their own pads.
The Dreame lists more suction, 25,000 Pa to the Roborock’s 18,500 Pa, and has an arm that extends its brush and mop into corners. The Roborock has independent test data behind its mop: it beat the average by 40 points in a stain test from Vacuum Wars. YouTube reviewer Jamie Andrews covered the L40 Gen 2’s changes from the original model and said he would share full cleaning results in a later review.
Qrevo S Pro vs L40 Ultra Gen 2: side by side
Prices from Amazon at time of writing. I may earn a commission from links, at no cost to you.
| Spec | Roborock Qrevo S Pro | Dreame L40 Ultra Gen 2 |
|---|---|---|
| Price | $399.99 | $499.98 |
| Listed suction | 18,500 Pa | 25,000 Pa (11,000 Pa on Gen 1, per Jamie Andrews) |
| Mop | Dual spinning pads, 200 RPM, lift 10 mm | Dual pads, lift 0.41 in (about 10.4 mm); extend to corners |
| Mop washing | 167°F hot water; 113°F air dry | Ace Clean high-pressure nozzles; no hot water (Jamie Andrews) |
| Dust | Auto-empty, 2.7 L bag, 7–9 weeks | All-in-one self-cleaning dock (listing) |
| Brush | Single rubber brush, fixed side brush | Rubber roller with hair-cutting blade; optional ~$50 TriCut brush |
| Carpet modes | Carpet-first vacuuming; suction boost | Carpet avoidance, suction boost, intensive carpet, mop lift |
| Runtime (listed) | 240 min official | Up to 231 min in quiet mode |
| Obstacle sensing | Structured light (Reactive Tech) | Smart Pathfinder and 3DAdapt; no front camera (Jamie Andrews) |
| Smart home | Matter compatible | Alexa, Siri, Google Home |
| Buy | Check price | Check price |
Round 1: Mopping
The Qrevo S Pro has the tested edge. Vacuum Wars measured a combined mopping score “much higher than average,” with only slightly more water left behind than average, and its app can mop along the floorboards to reduce streaks (Vacuum Wars, “Roborock Qrevo S Pro: It Sells Like a Winner. Does It Clean Like One?”). The L40 Gen 2’s main mopping feature is reach: Dreame says it extends both brush and mop into corners and under furniture. Jamie Andrews said he would test its mop cleaning in a full review (Jamie Andrews, “The New Dreame L40 Ultra Gen 2 is NOT What I Expected.”).
Edge: Roborock, on available test data.
Round 2: Mop Washing
The Roborock washes pads with 167°F water and dries them with 113°F air. Vacuum Wars said the heat helps sanitize pads and prevent odors (Vacuum Wars, “Roborock Qrevo S Pro: It Sells Like a Winner. Does It Clean Like One?”). Dreame’s Gen 2 uses its Ace Clean system, a series of high-pressure nozzles that spray the pads “kind of like a pressure washer,” first seen on Dreame’s X50, according to Andrews. He noted the Gen 1’s hot-water washing was removed. In his view, hot water mainly helps with grease (Jamie Andrews, “The New Dreame L40 Ultra Gen 2 is NOT What I Expected.”).
Edge: Roborock for heated washing; Dreame for its newer spray system.
Round 3: Vacuuming and Hair
Dreame lists 25,000 Pa. Andrews said the roller has grooves with a blade that cuts hair as it wraps, and that hair caught on one axle slides off easily, and Dreame sells a TriCut brush for about $50 (Jamie Andrews, “The New Dreame L40 Ultra Gen 2 is NOT What I Expected.”). Vacuum Wars said the Qrevo’s single rubber brush swept surfaces with almost no scattering. It recommends the Qrevo for mostly hard-floor homes rather than heavy pet hair, after measuring 43% pickup of flattened hair (Vacuum Wars, “Roborock Qrevo S Pro: It Sells Like a Winner. Does It Clean Like One?”).
Edge: Dreame on paper for carpet and hair.
Round 4: Price and Value
At Oct 17 prices, the Qrevo S Pro costs $100 less. Andrews said the L40 Gen 2 launched at $649.99, less than half the original L40 Ultra’s launch price. Both prices change often, so check before you buy.
Edge: Roborock, at today’s prices.
Which Should You Buy?
- Buy the Roborock Qrevo S Pro for mostly hard floors, tested mopping, heated pad washing and Matter support, for less money.
- Buy the Dreame L40 Ultra Gen 2 for more listed suction, extending corner reach, a hair-cutting roller and more carpet modes, especially with rugs or pets.
How This Comparison Was Researched
I have not tested either robot. Qrevo S Pro test results come from Vacuum Wars. L40 Ultra Gen 2 details come from Jamie Andrews’ hands-on first look and Dreame’s Amazon listing. Prices were checked on Amazon on Oct 17, 2026.
Videos: Vacuum Wars, “Roborock Qrevo S Pro: It Sells Like a Winner. Does It Clean Like One?”; Jamie Andrews, “The New Dreame L40 Ultra Gen 2 is NOT What I Expected.”
Frequently Asked Questions
Which is cheaper, the Qrevo S Pro or the L40 Ultra Gen 2?
The Qrevo S Pro, at $399.99 vs $499.98 on Amazon on Oct 17, 2026.
Which has more suction?
The L40 Ultra Gen 2 lists 25,000 Pa vs 18,500 Pa for the Qrevo S Pro.
Which washes mops with hot water?
The Qrevo S Pro, at 167°F. Jamie Andrews says the L40 Gen 2 uses high-pressure nozzles instead.
Is the L40 Ultra Gen 2 the same as the original L40 Ultra?
No. Andrews says it has much higher rated suction and a new washing system, but drops the Gen 1’s front camera, detachable mop pads and hot-water washing.
Sources
- Amazon listings: Roborock Qrevo S Pro, Dreame L40 Ultra Gen 2 (from Amazon at time of writing)
- Vacuum Wars, “Roborock Qrevo S Pro: It Sells Like a Winner. Does It Clean Like One?”
- Jamie Andrews, “The New Dreame L40 Ultra Gen 2 is NOT What I Expected.”
Related: Roborock Qrevo S Pro Review | eufy E25 vs Qrevo S Pro | Best Robot Vacuum and Mop Combo Under $500
Notes and disclosure
Note: Prices come from Amazon listings at time of writing. Suction, runtime and lift figures are the manufacturers’ listed numbers. Test results are credited to the reviewer who reported them.