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Philips Sonicare 3100 Series HX3671/14 review

No. 4 of 10 in our electric toothbrushes ranking · Updated · How we rank

Our verdict: The Philips Sonicare 3100 Series HX3671/14 ranks 4th of the 10 electric toothbrushes we compare, with 8.5 out of 10. It takes our Value for Money badge.

Philips Sonicare 3100 Series HX3671/14

8.5/10Value for Money

The Philips Sonicare 3100 Series HX3671/14 is a slim sonic electric toothbrush with a pressure sensor, timer and head-replacement reminder. It suits anyone who wants the Sonicare basics without extra modes.

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Why it's here

  • Pressure alert, two-minute timer and 30-second pacer at a budget price
  • Light and quiet in the hand
  • Head-replacement reminder through BrushSync
  • Sonicare heads are easy to find in UK shops

Keep in mind

  • One cleaning mode and one intensity
  • Fewer intensity levels than the 5300
  • Battery lasts roughly two weeks, short for travel

Why the Philips HX3671/14 scores 8.5

Each bar shows where it places among the 10 electric toothbrushes in this guide, so a full bar is 1st of 10. How happy owners are counts for most of the score.

  • How happy owners are3rd of 10
  • How many rated it2nd of 10
  • How new it is7th of 10

Why it sits behind the Philips Sonicare 5300 HX7101/02

The Philips Sonicare 5300 HX7101/02 (8.6) beats the Philips Sonicare 3100 Series HX3671/14 (8.5) because it is the newer design. The Philips Sonicare 3100 Series HX3671/14 leaves owners a little happier, but not by enough to close the gap. It takes our Value for Money badge instead.

About the Philips HX3671/14

The HX3671/14 is Philips's entry-level Sonicare with a pressure sensor. It uses sonic technology at 31,000 brush strokes a minute, and Philips says it removes up to three times more plaque than a manual toothbrush. The handle is slim and light.

Three features guide the brushing. SmartTimer and QuadPacer help you keep to the recommended brushing time, and Easy-Start raises the power gradually over the first uses. If you press too hard, the pressure sensor reduces the vibration to protect your gums. BrushSync tracks head use and brushing pressure, and reminds you when the head needs replacing.

Philips quotes up to 14 days of battery life. It charges from a USB charger, which Philips says uses less plastic than a mains power adapter. The brush takes Sonicare ProResults heads, sold singly or in packs. The model comes in black, sugar rose and white. Philips's pages don't list the box contents, and retailer listings vary on the adapter, so check what your seller includes.

What owners report about the Philips HX3671/14

We found little owner feedback for this exact model on pages we could open, so we report none here rather than borrow it from other Sonicare models.

Who the Philips HX3671/14 suits

It suits someone moving up from a manual brush or a basic battery one who wants a pressure alert, a guided timer and a head reminder in a light handle. It has one cleaning mode and one intensity, so people who want to switch between sensitive, polish or gum modes should look at the Philips Sonicare 5300 HX7101/02 or the Ordo Sonic+.

Philips quotes up to 14 days of battery, which is short for a long trip or for anyone who doesn't want to charge every fortnight. The Ordo Sonic Lite quotes over five weeks, and the Oral-B Vitality Pro is the pick if you prefer an oscillating-rotating brush.

Questions about the Philips HX3671/14

How long does the Philips Sonicare 3100 HX3671/14 battery last?

Up to 14 days, according to Philips. Actual life depends on how often and how long you brush.

Does the Philips Sonicare 3100 HX3671/14 have a pressure sensor?

Yes. It reduces the vibration when you brush too hard, to protect your gums.

What brush heads fit the Philips Sonicare 3100 HX3671/14?

Sonicare ProResults heads, which Philips sells singly and in 4-packs.

What warranty does the Philips Sonicare 3100 HX3671/14 have?

Philips lists a 2 year warranty and a 30 days return guarantee for this model. Check Philips's warranty policy for the terms.

Does the Philips HX3671/14 remind you to change the brush head?

Yes. BrushSync tracks head use and brushing pressure and reminds you when to replace the head.

Other electric toothbrush picks

The other badge winners in our electric toothbrushes ranking.

SURI Pro 2.0

8.8/10Best Choice

A design-led sonic brush with a metal handle, wireless charging and plant-based heads that SURI recycles.

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All 10 electric toothbrushes, compared

  1. 1 SURI Pro 2.0Best Choice 8.8 Check Price
  2. 2 Oral-B iO3 8.6 Check Price
  3. 3 Philips Sonicare 5300 HX7101/02 8.6 Check Price
  4. 4 Philips Sonicare 3100 Series HX3671/14This reviewValue for Money 8.5 Check Price
  5. 5 Ordo Sonic+ 8.3 Check Price
  6. 6 Oral-B Vitality Pro 8.3 Check Price
  7. 7 Ordo Sonic LiteBest Budget 8.1 Check Price
  8. 8 Oclean X Pro Elite 8.1 Check Price
  9. 9 Philips Sonicare DiamondClean Prestige 9900 HX9992/12 7.7 Check Price
  10. 10 Oral-B iO Series 10 7.7 Check Price
See the full electric toothbrushes ranking

The Philips HX3671/14 on Amazon

Philips Sonicare 3100 Series HX3671/14

The Philips Sonicare 3100 Series HX3671/14 is a slim sonic electric toothbrush with a pressure sensor, timer and head-replacement reminder. 8.5 out of 10.

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How we score it

Every score here comes from our ranking model; no editor sets the order. Too few review sites cover electric toothbrushes for their verdicts to lead, so this ranking is led by owners. It ranks products by how happy owners are, holding back any product few owners have rated until more agree. How many rated it and how new it is only settle close calls, and value for money earns its own badge rather than a higher place. We compared 22 models for this guide before settling on these ten.

Brands can't pay to be included or to move up. We last checked these picks in October 2026.

How we rank, in full

Where these facts come from