Oral-B iO5: problems, parts and running costs
Checked: 2026-10-13
Summary
The main knocks are battery life that worsens with use and a smart app that tends to be buggy; replacement heads cost more than double standard Oral-B heads and need changing every 3 months. Running cost is about $60-120 a year in brush heads. It is a good buy near $90; at the $119.99 official price the premium buys app coaching and Intense Clean, and above about $130 the iO6 is the better value.
Common problems and fixes
- Buggy app experience — Wirecutter’s assessment of smart toothbrushes generally: “the ‘smarter’ the toothbrush, the more disappointing the experience, because the brushes’ apps tend to be buggy.” [5]
- Higher replacement-head cost — iO heads cost more than double standard Oral-B Pro heads. [5]
- No interactive display or Gum Care mode — these start at the iO6; the iO5 has LED mode icons only. [3]
Parts and consumables
- Oral-B iO Ultimate Clean brush head (included) — replace every 3 months, or sooner if bristles fray; indicator bristles fade to signal replacement. [2][3]
- iO Gentle Care brush head, 2-count — $29.99 from Oral-B US; subscribe and save 20%. [1]
- iO brush head, 2-count — $37.50 per CNET’s specs. [4]
- iO brush head, 8-pack — about $7 each, up to $15 each. [5]
Yearly running cost
About $60-120 a year in replacement brush heads, changing a head every 3 months (4 heads a year at roughly $15-30 each). Head prices vary by type and retailer: $29.99 for a 2-count Gentle Care pack from Oral-B US, $37.50 for a 2-count per CNET, about $7 each in 8-packs per Wirecutter. No subscription is required; the charger is included. [1][4][5]
When it is a good buy
Price observations: $119.99 direct from Oral-B US (Matte Black and Matte White) [1]; about $90 in CNET’s September 2026 buying reference [4]; £79.99 in the UK in December 2025, down from £280 [6]. At about $90 it is strong value for app connectivity, 5 modes, Position Detection and a pressure sensor under $100 [4]. At $119.99 it is the least expensive route into an app-connected iO brush; the iO3 and iO4 sell for about $90-100 and clean the same way without Bluetooth, so the premium buys the app, Position Detection and Intense Clean [3]. Above about $130 the iO6, at about $160, adds an interactive display and Gum Care mode, and Wirecutter calls it the better value in the line [5]. The Oral-B Pro 1000 at $50 is Wirecutter’s top pick if you do not want app coaching [5].