Dyson V15 Detect vs Dyson V16 Piston Animal Submarine: Is the New Flagship Worth It?

The number on the box says the V16 wins by a wide margin: 315 AW against 240 AW. The measurements say something else. Vacuum Wars recorded 124 inches of sealed suction on the V15 Detect, the highest it has found on any cordless stick, and 85 inches on the V16. Its explanation is that Dyson tuned the V16 for airflow at the head rather than raw pull at the wand, and that beyond a certain point extra sealed suction stops adding pickup.

On the test that matters most for carpet, both are equal. Each scored a perfect 100 on Vacuum Wars' embedded-sand deep-clean test, and the V16 also took 4 of 4 on crevice pickup. The gap shows up in surface pickup after one pass. Mumsnet spilled cereal on carpet and found the V15 took it all in a sweep while the V16 left flakes, and CHOICE rated the V16 good on carpet against excellent for the V15, blaming the plastic strip between the two cones. If your home is carpet-heavy, the older machine is the safer bet.

On hard floors the two are close. Both carry a green laser and a soft roller for that job; the V16's All Floor Cones Sense head also switches its brush speed by surface, so you can leave one head on for the whole house. Full details are in our Dyson V15 Detect review and Dyson V16 Piston Animal Submarine review.

Dyson rates the V16 at 70 minutes in Eco against 60 for the V15, and the V16's advantage grows at the top setting: Vacuum Wars measured 15.3 minutes at Max, where the V15 managed 9 to 11 minutes across TechGearLab's and Expert Reviews' runs. Mumsnet got about 40 minutes from the V16 in Auto with charge left after a two-bedroom flat, so the V16 gives a large house more margin.

The bin is the bigger daily difference. The V15's 0.77 L is generous for a stick, but it is emptied the usual way. The V16's CleanCompactor holds 0.4 L physically and a lever squeezes the contents down so about 1.3 L fits before you empty it. CHOICE found the compression works on fluff and hair but not sand, and Tech Advisor found it did little with a full load of pet fur, so treat the 1.3 L figure as a best case.

Weight goes the other way. The V15 is 6.8 lb complete; the V16 is 3.4 kg, about 7.5 lb, and 3.5 kg with the Cones head fitted. The V16 is also top-heavy as a handheld, and Mumsnet's reviewer found the handle rubbed her wrist on long sessions. If stairs and upholstery are a large part of your routine, the extra weight matters more than the extra minutes.

The V15 splits the work between two heads: the Fluffy Optic for hard floors and the Digital Motorbar for carpet, with de-tangling combs. The V16 replaces both with one All Floor Cones Sense head, tapered so hair migrates to the narrow end and into the airflow, and the Submarine bundle still includes a separate soft-roller head with its own laser.

On tangling, the results favor the V15. Vacuum Wars found very little wrapping on its rollers, and Expert Reviews found no hair on either roller after a session that filled the bin with it. The V16's cones scored 7 of 10 on Vacuum Wars' 14-inch hair test, lower than Dyson heads usually manage, though T3 saw the head looking new after six weeks and Mumsnet found a single strand after two. Tech Advisor also noted the V16's wheels collect fur that has to be picked off by hand.

Wet cleaning is the V16's exclusive. Submarine 2.0 is a wet roller with a 300 ml tank and two flow settings; Vacuum Wars scored it 131 on dried-on stains against a category average of 139. It is a swap-on head, so you vacuum first, change heads, mop, then rinse the roller by hand; CHOICE found the tank drains fast on the higher flow. It is a convenience for a kitchen floor, not a substitute for a dedicated wet-dry cleaner. The V15 has no wet option at all.

Both are sealed HEPA machines fit for allergy households: TechGearLab's particle count on the V15 came back excellent, and the V16 showed no leaks in Vacuum Wars' fog test. The V16 is also quieter at Max, 74 dB against 76.

The control change is the one V15 owners complain about most. The V15 runs only while you hold the trigger, which TechGearLab found tiring over a whole-house session. The V16 has a power button with Eco, Auto and Boost, and both machines show remaining minutes and a particle readout on the LCD.

Price class is the final gap. The V15 has been on sale since 2021 and is regularly discounted; the V16 Submarine is Dyson's premium flagship, and the Submarine head is a good part of that premium. If you do not want the mop, the standard V16 Piston Animal is the same vacuum without it.

Buy the V15 Detect if you have real carpet, if you want the highest measured suction and the cleanest tangle record, or if you can pick it up at a discount. It still leads Vacuum Wars' cordless ranking as of September 24, 2026, and its faults are the trigger and the hand-emptied bin, not the cleaning.

Buy the V16 Piston Animal Submarine if most of your floor is hard, long hair is the daily problem, and a larger effective bin, longer run time and an occasional mop are worth a heavier stick and the premium price class. It is the more complete machine, not the better carpet cleaner.

If neither is right, our list of the best cordless stick vacuums covers lighter and self-emptying alternatives, and the cordless vacuum buying guide explains which specs actually predict cleaning results.