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Home / Health & Wellness / Electric Toothbrushes / iO Series 5
8.6 Tested Aug 26, 2026 by Team RankingRight

iO Series 5 (Oscillating, 5 modes) review 2026

The iO magnetic drive — the highest plaque score in our test — with a colour pressure ring and a travel case, at a third of the Series 9 price

PriceFrom $100 · checked Sep 11, 2026
Plaque removed88 %
Battery14 days

Is the iO Series 5 Worth It?

Best electric toothbrush overall. The Series 5 cleans as well as Oral-B's flagship and has the pressure feedback that matters. The one running cost is iO heads, which are pricier than classic Oral-B heads.

iO Series 5 Pros & Cons

Pros
  • 88% plaque removal — best here, tied with the Series 9
  • Light ring shows too much, too little and just-right pressure
  • Noticeably quieter than older Oral-B brushes
  • Travel case included; two weeks per charge
Cons
  • iO heads cost about $8 each — no cheap third-party option
  • App coaching is basic on the Series 5
  • Plastic body feels less premium than the Series 9

iO Series 5 at a Glance

8.6 Editor Score
Cleaning performancePlaque reduction measured with disclosing tablets across six testers, and along the gumline specifically.
34/35
Comfort & pressure controlNoise, vibration in the hand, pressure sensor behaviour, gentleness on gums.
17/20
Battery & buildDays per charge at two minutes twice a day, charger type, water resistance, travel case.
12/15
Replacement head costPrice per head at the recommended three-month change, and availability of third-party heads.
11/15
Modes & appBrushing modes, timers and pacers, and whether the app coaching changed our testers' coverage.
12/15
Reader ratingNo reader ratings yet — not part of the score
–
Own one? Rate it:

Rubric v1: Cleaning performance 35 · Comfort & pressure control 20 · Battery & build 15 · Replacement head cost 15 · Modes & app 15. Score = Σ ÷ 10, locked Sep 11, 2026. How we rank.

Where to buy — prices checked Sep 11, 2026

Amazon — $100

Best priceSee Price

iO Series 5 specifications

TechnologyOscillating
Modes5
Pressure sensorYes (light ring: red / green / white)
Battery (our test)14 days
Head cost (each)8 USD
AppYes, Oral-B app
ADA SealYes
Plaque reduction (our test)88 %

Why it scored 8.6

The Series 5 cleans as well as Oral-B's flagship and has the pressure feedback that matters. The one running cost is iO heads, which are pricier than classic Oral-B heads.

Where it loses

Head cost.

Still the right pick for

Most people.

Changelog: Sep 11 — rank 1 → 2; Sep 11 — rank 2 → 3 · all changes

iO Series 58.6 · $100
See Price