Dyson V8 Cordless Vacuum vs Shark Cordless Vacuum with Self Cleaning Brushroll

What you'll actually notice

Choose the Dyson V8 when lower carry weight and a simpler cordless workflow matter more than Shark's sealed-HEPA and removable-battery advantages. Choose the Shark IZ102 when hair-wrap control, Anti-Allergen Complete Seal with HEPA and battery removability are more important than keeping the machine light.

Both sit in the same up-to-40-minute stated runtime class, so this is not a runtime upgrade decision.

In day-to-day use, the two machines solve different forms of friction. The V8 keeps the body lighter and the workflow simpler. The IZ102 accepts more weight in exchange for a removable battery, sealed HEPA positioning and a self-cleaning brushroll. Because both remain in the same 40-minute stated-runtime class, those ownership differences deserve more weight than the matching endurance headline.

What changes the choice

Weight is the strongest everyday difference

Dyson lists the V8 at 2.5kg. Shark lists the IZ102 at 3.4kg. That 0.9kg gap is more decision-relevant on stairs, during repeated lifting and in handheld use than it is while the cleaner head is rolling across the floor.

If handling effort is one of the reasons you are moving to cordless, the V8 has the cleaner case.

Shark has the stronger sealed-filtration proposition

The IZ102 combines Anti-Allergen Complete Seal with HEPA and a self-cleaning brushroll. The V8 uses whole-machine filtration and instead pairs its Motorbar cleaner head with a dedicated Hair screw tool.

That gives Shark the clearer fit when sealed HEPA and reducing brushroll hair maintenance are central needs. Dyson remains credible for hair, but its advantage here is not filtration breadth; it is the lighter machine and its tool ecosystem.

Runtime is effectively a draw; bin size is not

Both manufacturers state up to 40 minutes under their own conditions. PIQSY does not treat those separate test conditions as a controlled endurance tie, but neither product belongs in the long-runtime tier.

The V8 carries a 0.54L bin versus 0.4L for the IZ102. That difference can matter in hair-heavy homes where bulky debris fills a small cordless bin quickly.

Battery design can change the ownership decision

The IZ102 record includes a removable battery. The V8's current SV25 record does not carry the same replaceable-battery capability.

That does not make the Shark automatically better, but it gives it a stronger ownership case if battery replacement flexibility is a high priority.

Decide whether you are solving handling effort or maintenance friction

The strongest reason to choose the V8 is something you feel every time you lift it: 2.5kg versus 3.4kg. The strongest reasons to choose the IZ102 are tasks you repeat over ownership: managing hair around the floor head, prioritising sealed HEPA filtration and having a battery that is explicitly removable.

That distinction helps prevent feature-count shopping. If stairs, carrying and handheld use are the recurring annoyance, adding Shark features does not solve the main problem. If hair wrap or battery flexibility is the recurring annoyance, the V8's lower weight may not compensate. Choose the architecture that removes the friction you actually experience most often.

The practical choice

Treat runtime as neutral and make two decisions in order. First, ask whether 0.9kg of weight difference matters in your home. Second, ask whether sealed HEPA, a self-cleaning brushroll and a removable battery are requirements or merely attractive extras.

If the answer to the first question is yes, the V8 has the clearer case. If the second group contains a genuine requirement, the IZ102 can justify its heavier body. The 0.54L versus 0.4L bin difference is a secondary ownership detail, not the primary reason to switch.

When to choose Dyson V8

• lower machine weight matters more than extra filtration features;
• shorter, frequent cleaning sessions suit your home;
• the 0.54L bin and Hair screw tool fit your routine;
• you want a simpler Dyson without premium sensing.

Read the full Dyson V8 Verdict.

When to choose Shark IZ102

• sealed HEPA filtration is a priority;
• long or pet hair makes self-cleaning brushroll design attractive;
• a removable battery matters to you;
• you accept the heavier 3.4kg machine and smaller bin.

Read the full Shark IZ102 Verdict.

Choose neither when

Choose neither when 40-minute-class runtime is already too restrictive, when you want a genuinely lightweight sub-2kg-class machine, or when hands-off auto-emptying is a hard requirement. In those cases, moving to a different cordless architecture will solve more than choosing between these two.

PIQSY conclusion

This pair is less about brand preference than handling versus ownership features. Pick the V8 for the lighter, simpler machine. Pick the IZ102 for the stronger hair-wrap, sealed-HEPA and removable-battery proposition.

If neither trade-off fits, use PIQSY Match rather than forcing a choice between them.