Is the iRobot Roomba j7+ worth twice the price of the Eufy RoboVac X8 used?

Yes for pet households and carpeted rooms. The j7+'s Clean Base self-empty dock and PrecisionVision camera are both hardware features the X8 does not have. The 1.1 bench score gap understates the real-world difference on thick carpet, where the X8 struggles noticeably. On hard floors only, the value case for the j7+ at £380 over the X8 at £160 is weaker.

Does the Eufy RoboVac X8 work on carpet?

On low-pile and medium-pile carpet, adequately. On thick or shag pile, the twin-turbine design does not generate enough suction to lift deeply embedded debris, and the robot can struggle to maintain traction. Our bench test scored carpet performance 6.5/10. If carpet is your primary surface, the X8 is not the right choice.

Which is easier to maintain used — Roomba j7+ or Eufy X8?

The Roomba j7+ is easier to maintain long-term. iRobot spare parts — batteries, brushes, filters, Clean Base bags — are widely stocked at Argos, Amazon UK, and specialist retailers. Eufy X8 parts are available but less widely distributed, and the brand's support for older models is less consistent. For a used purchase with an extended ownership horizon, the j7+'s parts ecosystem is a meaningful advantage.

Robot vacuum comparison

iRobot Roomba j7+ vs Eufy RoboVac X8 — Which to Buy Used?

Last updated 25 August 2026

At £340–£430 used, the iRobot Roomba j7+ is a premium vacuum with a bench score of 8.7. At £140–£200, the Eufy RoboVac X8 scored 7.6. That is a £200 gap for a 1.1 point difference in bench score. Whether the gap is worth it depends entirely on what you are cleaning and whether pet obstacle avoidance matters to you.

Robot vacuum

iRobot Roomba j7+

Recommended

Used price (UK)£340–£430

Retail (new)£549

Bench score8.7 / 10

Resale index93.2(-6.8% YoY)

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Robot vacuum

Eufy RoboVac X8

Used price (UK)£140–£200

Retail (new)£319

Bench score7.6 / 10

Resale index88.4(-11.6% YoY)

Full price guide →

How they compare

Aspect	iRobot Roomba j7+	Eufy RoboVac X8
Bench score	8.7 / 10✓	7.6 / 10
Used price (UK)	£340–£430	£140–£200✓
Retail price (new)	£549	£319✓
Navigation	Camera-based + iAdapt 3.0	Lidar (dToF)
Suction	10× AeroForce (standard)	Twin-turbine, strong on hard floors
Self-empty dock	Yes — Clean Base included✓	No self-empty dock
Obstacle avoidance	PrecisionVision — pet waste specific✓	Basic reactive avoidance
Carpet performance	Excellent✓	Poor on thick pile
Best for	Pets, mixed floors, self-management	Hard floors, budget buyers

Which should you buy?

★ Choose iRobot Roomba j7+

Choose the Roomba j7+ if you have pets, thick carpet, or you want the Clean Base self-empty dock. The camera-based obstacle avoidance and higher suction on carpet justify the price premium for most households.

Choose Eufy RoboVac X8

Choose the Eufy RoboVac X8 if your home is primarily hard floor, you have no pets, and your budget is under £200. At £150–£175 used it is one of the most affordable lidar-navigation robot vacuums available in the UK, and on hard floors it performs well above its price point.

Bottom line

For a hard-floor flat or house without pets, the Eufy X8 at £160 used is a strong budget buy that performs well enough to justify skipping the j7+. For anything with carpet, pets, or a requirement for self-emptying, spend the extra on the j7+.

For sale now

iRobot Roomba j7+

£340–£430 used

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Eufy RoboVac X8

£140–£200 used