Dreame X40 Ultra

What testers say about the Dreame X40 Ultra

For anyone with rugs lying on hard floors, the Dreame X40 Ultra can leave its pads in the station, vacuum the rugs and fetch the pads afterwards.

Its makers gave the Dreame X40 Ultra 12,000 Pa of suction, 8,000 Pa short of what most rivals with a pad-washing station list, and the testers found less of a gap on the floor than that suggests. Just A Dad Approved marked vacuuming at 8 of 10 over three months, a point clear of that tester's median. Vacuum Wars scores its vacuuming a little under that lab's median, yet saw it draw embedded sand out of carpet far better than most.

Obstacle avoidance came out at 3.37 on Vacuum Wars' five-point scale, a full point above that lab's median of 2.4, and TechRadar watched it keep clear of cables, shoes and pet mess. The side brush and a mop pad swing outwards, which Just A Dad Approved and TechRadar saw reach into corners. The 6,400 mAh battery tops the 5,200 mAh its peers usually carry, yet the stated run time of 180 minutes falls 20 minutes short of theirs.

The station is the weak point. At 59.1 centimetres it is some 9 centimetres taller than usual. TechRadar found its suction sometimes too weak to empty the robot's bin, which also clogged the bag, and cleaning its recessed parts put Just A Dad Approved on hands and knees. A bin left full means the next run starts with nowhere to put the dust.

Each point sums up, in our words, the review of the test it names, and its link leads to that review. We do not summarise RTINGS or Wirecutter: their lists are linked above.