Xiaomi Robot Vacuum S40 Review: 5-in-1 Cleaning for the Smart Home

Why We Picked This

Xiaomi has a proven track record of delivering solid value across its product ecosystem, and the Robot Vacuum S40 follows that playbook. At $205.75 during flash deals (down from $565.75), this is an exceptionally affordable entry into automated home cleaning. The perfect 5.0-star rating on Shopee — while based on a smaller pool of 82 reviews — signals strong early satisfaction from buyers.

5-in-1 Cleaning System

The S40 combines vacuuming and mopping in a single pass, with five cleaning modes that adapt to different floor types and dirt levels. The 10,000Pa hurricane suction sits in the mid-range tier — it handles daily dust, hair, and crumbs without issue, though it may not deep-clean heavily soiled carpets as effectively as robots with 18,000Pa or above.

For typical Singapore homes with predominantly tile or vinyl flooring, 10,000Pa is more than sufficient for daily maintenance cleaning.

Navigation and Mapping

The LDS laser navigation system creates accurate multi-floor maps of your home, allowing you to set room boundaries, no-go zones, and cleaning schedules. Laser navigation is a meaningful upgrade over the gyroscope-based systems found in budget robot vacuums — it means straighter cleaning lines, fewer missed spots, and faster overall cleaning times.

Xiaomi Ecosystem Integration

If you already own Xiaomi smart home devices, the S40 slots right into the Mi Home app alongside your air purifiers, lights, and cameras. You can create automated routines — for example, triggering a vacuum cycle when everyone leaves the house, or scheduling a mop session after cooking. This ecosystem integration is where Xiaomi consistently outperforms standalone robot vacuum brands.

The Verdict

The Xiaomi Robot Vacuum S40 is a smart buy for anyone already invested in the Xiaomi ecosystem or looking for a capable robot vacuum at an accessible price. At the flash deal price of $205.75, it offers LDS navigation and 5-in-1 cleaning that would cost significantly more from competing brands. The smaller review count is the only caveat, but the perfect rating so far is encouraging.