This is a great product and does the job well. The only little issue I have is the size of the water tank, could be bigger. This is far from ideal and clearly something Dyson didn’t think through. There’s no way to know how much mop water is filling up in the compartment behind the roller as the display only shows how much clean water you have left to work with. If it was the other way around, perhaps the unsealed compartment wouldn’t have been such a bother and I could empty the dirty water after mopping each room (which, again, is not ideal). Not everyone is going to lug the drip tray around as they mop or remember to place it exactly where you finish. And while this design flaw might seem like a small one, it ends up being a bigger issue for the end consumer to deal with.

Maintaining the Submarine is easy as the velvet roller comes off and is fully washable, and you can rinse out the entire cleaning head – press a marked red button and the two parts slide apart. I’ve actively been testing and reviewing vacuum cleaners of all kinds for the last six years and have learnt what to look for when choosing a machine that’s best for different kinds of homes. I also place high importance on value for money in any appliance I test.

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This excellent attachment is fully motorised, so it does not use your suction to spin, giving it fast-spinning ability and will not slow down under slight pressure like other similar tools do!

Unlike both the Gen5detect and the V15 Detect, I find the V15s Detect Submarine a lot easier to move around, no matter which cleaning head I’m using. According to Dyson’s spec sheet, the Complete model weighs 3.8kg, compared to the V15 Detect at 3.1kg and the Gen5detect at 3.5kg. I think that’s a mistake as it feels lighter than the V15 Detect in the hand, and the Submarine roller just makes it super easy to drag along a floor. I’ve tried measuring the machine myself on a weighing scale, but because I have to hold it in place, the measurements aren’t accurate and come in at just under 3kg, which can’t be right either. While we found some significant performance issues with the V15s Detect Submarine, overall this is a truly impressive piece of machinery that we recommend, with reservations, for most homes. This attachment can be used for dry or wet mopping. For damp mopping, fill in the included water reservoir, attach the two ultra microfiber pads to the bottom of the tool, and you are ready to mop! The water will be automatically released as the brushes spin & scrub your floors. You can control how much water is released to get the desired finish. The floors are almost completely dry and sparkling clean after the clean!The official advice comes after Australian comedian and creator Christian Hull went viral with a TikTok video showing footage of him washing his floors using the attachment. I also scattered different-sized grain on the floor to test vacuuming, including sugar, rice, Cheerios and tapioca pearls. I then used the Digital Motorbar and the Fluffy Optic to vacuum to determine which one does best on such debris. People who love Dyson products and who are ready to upgrade their existing vacuum will be the ideal buyers for this particular machine, as will people looking for a next-level vacuum-mop combo. The V15s Detect Submarine was better than any wet-dry floor care tool I’ve tried. The mop pads get quite heavy when they’re wet. Depending on how often you use it, the excess torque may put extra strain on the motor, which may shorten the life of the Dyson vacuum.