Best Robot Mower for a 500m² Garden UK
Last updated: 2026-07-05 · Prices checked against UK retailers on this date
500m² sits on an awkward boundary: it's the exact rating of several popular mowers, which makes them tempting and wrong. The rule from our 300m² guide applies with more force here — buy above your size.
The 500m² shortlist
| Model | Price* | Rated | Verdict at 500m² |
|---|---|---|---|
| Navimow i208 AWD | £899 | 800m² | Best all-round pick — headroom + AWD traction |
| Navimow i208 LiDAR | £1,099 | 800m² | The pick if trees shade your lawn |
| Eufy E15 | £1,499 | 800m² | Easiest setup, flat even lawns only |
| Navimow i105E | £699 | 500m² | At its limit — only for simple, open 500m² lawns |
*Official UK store prices checked 5 July 2026.
Best all-round pick: Navimow i208 AWD
Segway Navimow i208 AWD
£899 (RRP £999)Best for: The current value sweet spot for 400–700m² lawns: 800m² coverage and all-wheel traction for under £900.
Avoid if: Your lawn is tiny (the i105E saves £200) or sits under heavy tree canopy (consider the LiDAR models).
Pros
- 800m² + AWD at £899 undercuts the older i108E by £400
- Better wet-grass and bumpy-lawn traction than 2WD i1 models
Cons
- Newer platform with a shorter track record than the i105E
- Still RTK-dependent — needs reasonable sky view
Data checked 2026-07-05 against uk.navimow.com official store. Affiliate link via Awin — we earn commission from qualifying Navimow purchases at no extra cost to you.
If trees shade your lawn: Navimow i208 LiDAR
Segway Navimow i208 LiDAR
£1,099Best for: Lawns up to 800m² with trees, walls or sheds that would starve a pure-RTK mower of satellite signal.
Avoid if: Your lawn is open to the sky — you'd be paying ~£200 for LiDAR you don't need.
Pros
- LiDAR keeps positioning solid where RTK alone flickers
- Sensible price for tree-tolerant navigation
Cons
- The i215 LiDAR gives 1,500m² for the same £1,099
- Overkill for open lawns
Data checked 2026-07-05 against uk.navimow.com official store. Affiliate link via Awin — we earn commission from qualifying Navimow purchases at no extra cost to you.
The Eufy E15 case
800m² rating, no-antenna 15-minute setup, superb obstacle avoidance — but its official 18° slope limit and reviewer-flagged damp-grass grip mean it wants a flat, even, well-drained lawn. Be honest about yours; details in the full E15 review.
Why wire-free wins at this size
A 500m² lawn implies ~90–120m of perimeter plus islands. Wired, that's a weekend of pinning wire or an installer's fee (see installation costs). Wire-free, it's under an hour with your phone. The bigger the lawn, the bigger the wire tax — though if you're happy to pay it, the Gardena Sileno Minimo 500 (~£429) remains the budget-wired route.
Common mistakes at 500m²
- Buying a mower rated exactly 500m² for anything other than a simple open rectangle.
- Ignoring zones: if your 500m² splits front/back, confirm multi-zone support and how the mower travels between them.
- Choosing a flat-lawn camera model for a garden that's damp half the year.
Run your numbers in the mower finder →
Related: Large gardens · 300m² guide · Navimow i208 review · Eufy E15 review
FAQs
Can the Navimow i105E handle a 500m² lawn?
It's rated exactly 500m², so technically yes — but it would mow at full stretch every day with no slack for weather, growth spurts or complex shapes. At 500m² we recommend stepping up to an 800m²-rated model like the i208 AWD (£899).
What's the cheapest robot mower for a 500m² lawn?
With proper headroom: the Navimow i208 AWD at £899 (800m², RTK + AWD). Wired, the Gardena Sileno Minimo 500 (~£429) is rated exactly 500m² — fine for a simple, open lawn.
Should a 500m² garden go wired or wire-free?
At this size wire-free earns its premium: 500m² means roughly 90–120m of perimeter wire to bury, plus islands around beds and trees — a full weekend or an installer's invoice, versus an app-based boundary walk for wire-free (no digging required; exact time varies with garden size and complexity).
Product data checked
This guide is based on manufacturer specifications, UK retailer listings and published expert reviews — we have not personally tested every model listed, and we clearly separate manufacturer claims from third-party review findings. Sources checked on 2026-07-05:
- Segway Navimow official UK store — i105E £699/500m², i208 AWD £899/800m², i208 LiDAR £1,099/800m²
- Eufy UK official store — E15 £1,499/800m², 18° slope limit
How we compare products
- UK-first: only models actually sold in the UK, priced in pounds.
- No invented claims: specs come from manufacturer data sheets; hands-on findings are credited to the reviewers who tested them.
- Placeholders marked: if we haven't verified a price or spec yet, we say so rather than guess.
- Use case beats hype: we recommend by garden size, slope and budget — not by commission rate.