The V8 is the cheapest way into Dyson's cordless line and the machine every budget stick gets compared with. Here is what its own specification sheet supports, and what it quietly does not.
Everyone in this category says they tested twenty vacuums. We have not tested any, and we say so. What we do instead is read the manuals, compile the published specifications, and work out what each machine costs to run for three years — the method is written out in full.
We earn a commission if you buy through the links on this page, at no extra cost to you. It never changes what we recommend or the order we recommend it in. Full disclosure.
The verdict: the V8 is a genuinely good machine and a poor value at full price. What it publishes that the budget field mostly does not: whole-machine filtration rated to 99.99% at 0.3 microns, a de-tangling Motorbar head, 5.6 lb, and a two-year warranty. What it does not publish: a suction figure in air watts, a battery cycle rating, or any way to replace the cell yourself. Three cordless sticks on this site publish a longer runtime, a bigger bin and a published suction figure for a fraction of the price — and none of them matches the V8's filtration claim. That is the whole trade in two sentences.
What Dyson publishes
Dyson's own published specification for the V8, as read from its retail listing.
Figure
Published value
Rated runtime
Up to 40 minutes of fade-free power
Battery
21.6 V
Weight
5.6 lb
Bin
0.14 gallons
Filtration
Whole-machine, rated to trap 99.99% of particles down to 0.3 microns
Cleaner head
Motorbar, de-tangles hair as it cleans
Modes
Two
Warranty
2-year limited
Suction in air watts
Not published for this model
Battery cycle rating
Not published
Removable battery
Not published
Every figure is Dyson's own published number for this model. Where a row says "Not published", we could not find the figure on the listing and have not estimated it.
The two things it publishes that the budget field does not
Filtration with a particle size. 99.99% at 0.3 microns, whole-machine, is a stronger claim than almost anything in the budget band publishes — and "whole-machine" is the important word, because a filter only does its job if the air is forced through it rather than leaking past. Shark and Levoit name ASTM F1977-22 on some models, which is a more checkable form of claim; Dyson publishes a higher number without naming a standard. Both beat the bare word HEPA.
A de-tangling head as a published feature. The Motorbar is designed so hair does not wrap the brush bar at all, and hair wrap is the single most common reason a cordless vacuum becomes annoying to own. Several budget machines now publish an equivalent — Tineco's ZeroTangle, Levoit's anti-tangle design, Shark's PowerFins — and that convergence is the strongest argument against paying Dyson prices for it in 2026.
The three things it does not publish, and why each matters
No air-watt figure for this model. Dyson publishes air watts on some machines — the V11 Origin's 185 AW is the only comparable suction unit on this whole site — and does not on the V8. So the V8 cannot be compared numerically with its own sibling, let alone with a Tineco publishing 160 W of suction.
No battery cycle rating. Nobody in this category publishes one, so this is not a Dyson failing specifically. But it is the figure that decides how long the machine lasts, and on a premium machine the absence is more expensive.
No published removable battery. When the cell fades, a machine with a user-replaceable battery takes a new cell; one without is replaced. Two budget machines on this site publish removable batteries. The V8 does not.
What it costs to own for three years
Electricity is irrelevant on any cordless machine — they draw power only while charging, and no manufacturer here publishes charger consumption, so there is no honest figure to quote. The real cost is the battery, and the honest way to state it is as a risk rather than a number: no cycle rating is published, no user-replaceable cell is published, and the warranty is two years. Beyond that window the machine's remaining life is unknown and unfixable by you.
Against that, Dyson's filters are washable and the parts network is genuinely deep — which is the argument for buying one used or refurbished rather than new, and the reason the V8 keeps appearing on this site as the flagship reference point rather than a recommendation.
#
Product
Best for
Score
Price
01
Dyson V8 Cordless VacuumThe cheapest current Dyson, and the honest comparison point: 40 minutes and 5.6 lb, the same rated runtime as a Shark costing far less.
Tineco A30S Cordless VacuumSixty minutes on the crevice tool and forty with the powered head, published separately — and 67 dB, which is the quietest figure on this page.
Shark Cordless Pet (IY143H)Doubles the dust cup over the IX141 and adds the self-cleaning brushroll, which is the single feature that matters if a dog lives here.
Levoit Anti-Tangle Cordless VacuumThe only listing in this price band that publishes runtime three ways instead of quoting the flattering number and hoping you do not ask.
The V8 alongside the three budget machines whose published figures come closest to it. Scores are our rubric applied to published specifications, not test results.
01 · The flagship entry point
Dyson V8 Cordless Vacuum
The cheapest current Dyson, and the honest comparison point: 40 minutes and 5.6 lb, the same rated runtime as a Shark costing far less.
Whole-machine, rated to trap 99.99% of particles down to 0.3 microns
Cleaner head
Motorbar, de-tangles hair as it cleans
Warranty
2-year limited
Modes
Two
Every figure above is the manufacturer's own published number. Where a manufacturer publishes nothing, the row says "Not published" rather than an estimate.
What the numbers say
+5.6 lb with a metal-and-polycarbonate build that outlasts the plastic budget machines
+Two-year warranty plus Dyson's own long-term parts support
+Trigger power control genuinely stretches the battery
Where it stops
−0.14 gallons is a small bin — smaller than the Levoit and less than half the Tikom
−40 minutes is the same published figure as a Shark IX141
−Two modes only; the LCD and detection features are on the dearer machines
Who it is for
People who keep vacuums for a decade and want the parts to still exist.
Skip it if
You are buying on the runtime number. It is 40 minutes, the same as machines costing a fraction as much — the money buys build and support, not minutes.
Our score: 7.9 out of 10
Published power8.0
Runtime7.0
Bin and filtration8.0
Weight and handling9.5
Running cost5.0
Scored against the published rubric on How We Pick. These are judgments about spec sheets, not measurements.
02 · Longest published runtime
Tineco A30S Cordless Vacuum
Sixty minutes on the crevice tool and forty with the powered head, published separately — and 67 dB, which is the quietest figure on this page.
Up to 60 minutes with the 2-in-1 crevice brush; 40 minutes with the ZeroTangle brush
Suction
160 W suction, manufacturer-stated
Weight
5.3 lb
Dust cup
1 liter
Filtration
HEPA
Rated noise
67.1 dB
Brushroll
ZeroTangle
First charge
4-5 hours before first use, manufacturer-stated
Every figure above is the manufacturer's own published number. Where a manufacturer publishes nothing, the row says "Not published" rather than an estimate.
What the numbers say
+Publishes a suction figure (160 W) at all, which most of this price band refuses to do
+1-liter bin, 5.3 lb, and the runtime split is stated by tool
+67.1 dB rated — around 13 dB below the Shark line, which is a large perceived difference
Where it stops
−Tineco's spare parts network is thinner than Shark's or Bissell's
−The 60-minute headline is the crevice-tool figure; the number that matters is 40
−No stated battery-cycle rating, so battery life over years is unknowable from the sheet
Who it is for
Apartments and shared walls, where 67 dB versus 80 dB is the difference between cleaning at 9pm and not.
Skip it if
You want to buy replacement parts at a big-box store in three years. Shark and Bissell consumables are on shelves; Tineco's mostly are not.
Our score: 8.0 out of 10
Published power7.5
Runtime8.5
Bin and filtration8.5
Weight and handling9.0
Running cost6.5
Scored against the published rubric on How We Pick. These are judgments about spec sheets, not measurements.
03 · Best for long pet hair
Shark Cordless Pet (IY143H)
Doubles the dust cup over the IX141 and adds the self-cleaning brushroll, which is the single feature that matters if a dog lives here.
HEPA with Complete Seal, rated to capture over 99.97% of dust and allergens
Brushroll
Self-cleaning Turbo Pro, published as anti-hair-wrap
Floor detection
FloorDetect, adjusts brushroll speed by floor type
Suction in air watts or Pa
Not published
Every figure above is the manufacturer's own published number. Where a manufacturer publishes nothing, the row says "Not published" rather than an estimate.
What the numbers say
+0.7-quart cup is double the IX141's, which is the difference between one empty and three
+Self-cleaning brushroll is published as anti-hair-wrap, and that claim is specific rather than decorative
+FloorDetect removes the nozzle-swapping step between rug and hardwood
Where it stops
−Still no published suction figure
−Heavier than the IX141 by 0.2 lb, which you notice on stairs and nowhere else
−Battery is not published as user-removable on this model
Who it is for
Pet households with a mix of rug and hard floor, where hair wrap is the actual daily annoyance.
Skip it if
Your floors are entirely hard surface and nothing sheds. You are paying for the anti-tangle brushroll, and on bare floor it does nothing for you.
Our score: 7.5 out of 10
Published power6.0
Runtime7.0
Bin and filtration8.5
Weight and handling7.5
Running cost8.0
Scored against the published rubric on How We Pick. These are judgments about spec sheets, not measurements.
04 · Best published runtime detail
Levoit Anti-Tangle Cordless Vacuum
The only listing in this price band that publishes runtime three ways instead of quoting the flattering number and hoping you do not ask.
Up to 50 minutes in Eco with the crevice or pet tool; 30 minutes with the powered floor head; 12 minutes in Turbo
Motor
180 watts
Battery
22.2 V
Weight
6.2 lb
Dust cup
0.75 liters
Filtration
5-stage, rated to capture 99.9% of particles down to 0.3 microns, tested per ASTM F1977-22
Filter replacement interval
Every 3 months, manufacturer-stated
Suction in air watts or Pa
Not published
Every figure above is the manufacturer's own published number. Where a manufacturer publishes nothing, the row says "Not published" rather than an estimate.
What the numbers say
+Publishes runtime by mode and by tool, which is the honest way to state it and almost nobody does
+6.2 lb, the lightest full-size stick here
+Lies flat at 180 degrees to get under furniture
+Names its filtration test standard (ASTM F1977-22) instead of claiming a bare percentage
Where it stops
−12 minutes in Turbo is the real number for deep carpet work and it is short
−Manufacturer-stated 3-month filter interval is the shortest here, and that is a running cost
−Explicitly dry-messes only
Who it is for
Hard floors and rugs, someone who wants the lightest machine and reads the footnotes.
Skip it if
You have deep pile carpet throughout. Twelve minutes of Turbo will not finish a carpeted house, and running it in Eco on pile is not deep cleaning.
Our score: 7.7 out of 10
Published power6.5
Runtime8.0
Bin and filtration8.5
Weight and handling9.0
Running cost6.5
Scored against the published rubric on How We Pick. These are judgments about spec sheets, not measurements.
How the budget field compares on paper
Three machines on this site are the honest alternatives, and each beats the V8 on something it publishes:
Published figures only. None of these are test results and none are ours.
Dyson V8
Tineco A30S
Shark IY143H
Levoit LVAC-200
Rated runtime
Up to 40 min
40 min powered / 60 crevice
40 min, at the hand vac
50 Eco / 30 powered / 12 Turbo
Published suction
Not published
160 W
Not published
Not published
Bin
0.14 gal
1 L
Per its card
Per its card
Weight
5.6 lb
5.3 lb
Per its card
Per its card
Anti-tangle head
Motorbar
ZeroTangle
Powered anti-tangle
Published anti-tangle
Filtration
99.99% at 0.3 microns, whole-machine
HEPA, no figure
Per its card
ASTM F1977-22
Warranty
2 years
Per its card
Per its card
Per its card
Where a cell reads "per its card", the figure appears on that product's card above rather than being restated here. The runtime breakdowns are each brand's own published wording.
The pattern: the budget machines win on runtime detail, bin size and published suction; the V8 wins on filtration and on the cleaner head. Whether that is worth several times the price depends entirely on whether anyone in the house reacts to dust. If somebody does, the filtration claim is the best on this page. If nobody does, you are paying for a head that three cheaper machines now publish an equivalent of.
Who should buy the V8
Allergy households who want the strongest published filtration figure in the cordless band and do not need it tied to a named standard.
Long-hair or shedding households who want the de-tangling head from the brand that invented the category, with the deepest parts network behind it.
Anyone buying it used, refurbished or heavily discounted — at a fraction of list, every objection on this page except the sealed battery disappears.
Who should not
Anyone shopping on suction. Dyson does not publish an air-watt figure for this model, so there is nothing to compare, and the machines that do publish one cost a fraction as much.
Anyone keeping a vacuum past the warranty. No cycle rating, no published removable cell, two years of cover.
We have not used this machine. Everything above is read off Dyson's own published specification and compared with other manufacturers' published specifications. A spec sheet cannot tell you how the trigger feels after ten minutes, how the bin ejects in practice, or how the cell holds up in year three. Our method page states exactly where our evidence stops and why we publish a score anyway.
Common questions
Is the Dyson V8 worth it?+−
At full price, for most households, no — three cordless sticks on this site publish longer or better-detailed runtimes, bigger bins and, in one case, an actual suction figure, for a fraction of the money. At a heavy discount, or in an allergy household that wants the strongest published filtration claim in the cordless band, yes. The deciding question is whether anyone in the house reacts to dust.
How much suction does the Dyson V8 have?+−
Dyson does not publish an air-watt figure for the V8. It publishes 185 air watts for the V11 Origin, which is the only comparable suction unit on this site, and nothing equivalent for this model. Any V8 suction number you see quoted elsewhere did not come from Dyson's specification for this machine.
How long does the Dyson V8 battery last on one charge?+−
Dyson publishes up to 40 minutes of fade-free power. As with every brand, that is a maximum in the lowest mode without a powered head — the same way Shark's 40-minute figure is measured at the hand vac in standard mode. Expect substantially less with the powered cleaner head on carpet.
Can you replace the battery in a Dyson V8?+−
Dyson does not publish a removable battery for this model, and no manufacturer in this category publishes a cycle rating. That combination is the main long-term risk of the purchase: when the cell fades, the fix is not documented as a user-serviceable part. Two budget machines on this site do publish removable batteries.
Is the Dyson V8 good for pet hair?+−
On published specifications, yes: the Motorbar head is designed to de-tangle hair as it cleans, and hair wrap is the most common long-term annoyance with any cordless vacuum. What has changed is that several budget machines now publish their own anti-tangle designs, so this is no longer a feature only Dyson sells.
V8 or a budget cordless stick?+−
If nobody in the house has a dust allergy, a budget stick with a published anti-tangle head does the same daily job and leaves money over. If somebody does, the V8's 99.99%-at-0.3-microns whole-machine claim is the strongest published filtration figure in the cordless band on this site — though Shark and Levoit name a test standard, which Dyson does not.
Sources
Manufacturer-published specifications — Every runtime, wattage, capacity, weight, filtration and warranty figure quoted on this page is the manufacturer's own published number for that model, retrieved September 1, 2026. Where a manufacturer publishes no figure, the page says 'Not published' rather than estimating one.
ASTM F1977 — standard test method for vacuum cleaner filtration efficiency — Named by Shark (tested by IBR Laboratories, per ASTM F1977-22) and by Levoit (ASTM F1977-22) in their own published filtration claims. Where a brand names this standard we treat the claim as checkable; where a brand states a bare percentage we do not.
Sweep & Suction — How We Pick — Our published method, including the scoring rubric, the three-year running-cost formula and an explicit statement of what published specifications cannot tell you.
