Worx Landroid slopes, ponds and drops
Updated: October 2026
A bank that looks modest from the patio can become the hardest part of a robot mower installation when the grass is wet and the bottom ends at a pond. For a Worx Landroid slope, use the percentage printed for the exact model, then apply the separate edge or boundary-wire rule. The WR142E title states 35%, while Worx UK pages give 30% for the WR303E and WR305E. Those figures are not interchangeable. Our [Worx robot lawn mower comparison](/hub/lawn-and-garden-equipment/worx-robot-lawn-mower) does not claim a slope where the amazon.co.uk listing leaves the field blank. A qualifying purchase can earn a commission at no extra cost to you.
A bank that looks modest from the patio can become the hardest part of a robot mower installation when the grass is wet and the bottom ends at a pond.
A bank that looks modest from the patio can become the hardest part of a robot mower installation when the grass is wet and the bottom ends at a pond. For a Worx Landroid slope, use the percentage printed for the exact model, then apply the separate edge or boundary-wire rule. The WR142E title states 35%, while Worx UK pages give 30% for the WR303E and WR305E. Those figures are not interchangeable. Our Worx robot lawn mower comparison does not claim a slope where the amazon.co.uk listing leaves the field blank. A qualifying purchase can earn a commission at no extra cost to you.
Our top picks
| Badge | Product | Stated slope | Navigation | Cut to Zero | Note | Price | Offer |
|---|---|---|---|---|---|---|---|
| Best overall |  WORX WORX Vision Cloud WR303E | 30% (17°) on Worx UK | VSLAM + RTK Cloud | Not stated | 9.1 | about £671.99 | View offer |
| Preis-Tipp |  WORX WORX Landroid WR142E | 35% in the title | Boundary wire and AIA | Not stated | 8.9 | about £499 | View offer |
| Alternative |  WORX WORX Vision Cloud WR306E | Not stated | VSLAM + RTK Cloud | Included | 8.2 | about £899 | View offer |
On this page
Read the percentage for the model you are buying
Slope percentage is not degrees. A 35% gradient is 35 cm of rise over 100 cm of run, about 20 degrees in the WR142E installation material. A 30% gradient is about 17 degrees. Do not read 35% as 35 degrees.
Measure the steepest section, not the average. A metre board and a spirit level turn the vertical gap into a percentage: 20 cm of rise is 20%, 35 cm is 35%. Check the top, middle and bottom. A concave bank can hide a sharper piece.
The WR142E is the only title here that states a slope: 35%. Worx UK gives the WR303E 30% or 17 degrees, and the WR305E manufacturer page uses the same figure. The Amazon tables for those Cloud models do not print a slope, so 30% belongs to Worx, not to Amazon. The WR169E and WR206E rows have no dependable slope figure here. A blank is a reason to get the manual, not to borrow 35%. If the bank changes the shortlist, use the Worx Landroid buying guide.
Keep the lower boundary wire off a steep bank
Climbing ability and wire placement are different questions. The WR142E guide allows a climb up to 35%, and it says the lower boundary wire should not sit on a slope steeper than 17% or 10 degrees. On wet grass the mower can slide past the loop.
That matters when the bank ends at paving, a drop or water. Moving the cable a few centimetres does not fix the gradient. Re-route onto flatter ground, or leave that strip for another mower. Where a 17% slope leads towards an obstacle, the guide uses at least 40 cm of separation.
The same material says not to put the upper wire on a slope steeper than 35%. Test the loop on the surface, dry and then damp, before you bury it. The Worx Landroid setup guide covers distances from steps and flush paths. Those distances do not cancel the slope rules.
Treat Vision Cloud banks and Cut to Zero separately
The WR303E and WR305E manufacturer pages state 30% or 17 degrees. Vision Cloud has no classic loop, so the lower-wire rule does not apply. Traction, braking and edge recognition still do. A bank into more grass, a dark border or a drop still needs an exclusion the mower can read.
A WR303E manual extract says slopes greater than 15 degrees are not recommended once Cut to Zero is fitted. That note is from the manual, not from Amazon, and 15 degrees is not 15%. Check the manual that came with the module.
The WR306E includes Cut to Zero and does not state a slope. Do not glue the WR305E figure onto that module. Worx points very steep gardens at Vision Cloud 4WD models. None of those machines is in these six listings.
Exclude ponds, pools and abrupt drops
Treat water as an exclusion. Classic guidance uses at least 30 cm between the boundary wire and a pool. If the ground falls towards the water, wet grass can carry the mower past the wire, so the gap may need to be larger.
A rain sensor does not make a pond edge safe. On the WR142E, WR169E and WR206E it can send the mower home when rain is detected. It is not a water detector. A lift-or-tip blade stop does not keep the machine out of the water either.
Use a real barrier where a failed map or a cut cable could send the mower off a drop. A flush kerb is not automatically high enough to stop the wheels. If you cannot make the clearance, leave that strip and cut it yourself.
Common questions
Is a 35% slope the same as 35 degrees?
No. A 35% gradient is 35 cm of rise over 100 cm of horizontal run, and it is about 20 degrees. A 35-degree bank is much steeper. Worx pairs 35% with 20 degrees in WR142E installation material, so keep percentage and angle units attached to the published model figure.
Why does the manual mention 17% when the mower is rated to 35%?
The 35% figure describes the WR142E's stated climbing limit. The 17% figure limits placement of the lower boundary wire, where the mower can slide downhill and cross the loop on wet grass. A machine that can climb a bank can still need a flatter stopping zone at the bottom.
Can the WR303E climb the same slope as the WR142E?
Do not assume so. Worx UK states 30% or 17 degrees for the WR303E, while the WR142E title and guide state 35% or about 20 degrees. The WR303E Amazon table in this comparison does not answer the slope question, so use the manufacturer documentation for that model.
What changes when Cut to Zero is fitted?
A WR303E manual extract advises against slopes above 15 degrees when the Cut to Zero module is fitted. That is an accessory-specific manual note, not an Amazon claim. Check the current module and mower manuals, because a general Vision Cloud slope figure may not apply unchanged.
How far should a boundary wire be from a pond?
Classic Worx installation guidance uses at least 30 cm from a pool, and a bank falling towards water may need more separation or a physical barrier. Apply the lower-slope wire rule as well. Water should be positively excluded rather than treated as a visual border.
Are Vision Cloud 4WD models included here?
No. The six compared listings are the WR303E, WR305E, WR306E, WR206E, WR169E and WR142E. Worx promotes separate 4WD models for steep and complex terrain. Their capability, price and included equipment sit outside this comparison. Do not treat a 4WD brochure figure as a limit for these six rows.
Related pages
Sources
Sources checked for this comparison; last retrieved on 16 October 2026. Prices and review counts are from the amazon.co.uk listings dated 15 October 2026.
- Worx UK, Landroid Vision Cloud (retrieved 16 October 2026)
- Worx UK, WR303E (retrieved 16 October 2026)
- GOV.UK, Supply of Machinery (Safety) Regulations 2008 (retrieved 16 October 2026)
- GOV.UK, outdoor noise (retrieved 16 October 2026)
- IEC 60335-2-107, robotic battery mowers (retrieved 16 October 2026)
- Worx, boundary-wire installation notes (retrieved 16 October 2026)
- Worx WR142E installation guide (retrieved 16 October 2026)
- Consumer Rights Act 2015 (retrieved 16 October 2026)