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Comparison · 2 robots

Kärcher RCX 4 · MOVA LiDAX Ultra 1000

All robot lawn mowers. Every measure below is plotted against the full class, so a difference can be read against how much the class itself varies.

  1. Kärcher RCX 4
  2. MOVA LiDAX Ultra 1000
MOVA

MOVA LiDAX Ultra 1000

Autonomy
IIIConditional Autonomy
Score
Not scored
Readiness
Not assessed
Price
$899list

Up to three

01 Classification

What each one does on its own.

The Autonomy Ladder is the same five rungs for every robot on the site. A rung describes the conditions a robot handles without you, not how good it is.

V
Generalized
Any task, any setting
IV
Environmental
Handles new obstacles without help
III
Conditional
Finishes familiar jobs on its own
Kärcher RCX 4MOVA LiDAX Ultra 1000
II
Assisted
Runs preset routines, needs rescue
I
Manual
One action, on command
02 Assessment

Where they actually differ.

The Robovations Score is nine inputs across three pillars, each weighted as shown and each scored so that more is better. A robot can lead on one and trail on another, which is the point of showing them apart. Cost of ownership and data handling are reported on each robot's own page and are never averaged into the score.

Capability

Task completion16% of score
Does it finish the job it is sold to do, unattended
  • Kärcher RCX 465
18median 72 across 381 scored robots100

Not scored: MOVA LiDAX Ultra 1000

Coverage and navigation10% of score
Does it work the whole area, and hold that between runs
  • Kärcher RCX 465
15median 70 across 371 scored robots100

Not scored: MOVA LiDAX Ultra 1000

Edge-case recovery10% of score
Does it recover from the failures its category presents
  • Kärcher RCX 455
18median 50 across 287 scored robots100

Not scored: MOVA LiDAX Ultra 1000

Operating envelope4% of score
How far conditions can vary before performance drops
  • Kärcher RCX 468
25median 68 across 345 scored robots100

Not scored: MOVA LiDAX Ultra 1000

Dependability

Field failure rate16% of score
Documented hardware failures per owner-year
  • Kärcher RCX 452
6median 70 across 371 scored robots100

Not scored: MOVA LiDAX Ultra 1000

Software stability14% of score
Whether updates fix more than they break
  • Kärcher RCX 446
15median 65 across 300 scored robots100

Not scored: MOVA LiDAX Ultra 1000

Support longevity10% of score
Committed parts, service and updates, with dates
  • Kärcher RCX 455
0median 63 across 377 scored robots100

Not scored: MOVA LiDAX Ultra 1000

Ownership burden

Routine maintenance12% of score
Hands-on time it asks for in normal operation
  • Kärcher RCX 468
22median 65 across 382 scored robots100

Not scored: MOVA LiDAX Ultra 1000

Consumables8% of score
Parts that must be bought to keep it working
  • Kärcher RCX 452
8median 69 across 381 scored robots100

Not scored: MOVA LiDAX Ultra 1000

03 Measured against the class

How far apart is a long way?

A number only means something next to the spread it sits in. Each track below is the real range across every classified robot in the class, with the median marked.

These robots share no measured specification with enough published figures to plot. That is a gap in the record, not a finding about the robots.

04 Ownership

What the numbers leave out.

The trade-off

What each design gives up to be good at what it is good at.

Kärcher RCX 4

PIN-gated, account-locked operation is a real anti-theft measure, but it also means the mower cannot simply be handed to a new owner without the prior account holder’s approval.

The rain sensor protects the machine by returning it to dock, at the cost of an interrupted, not merely paused, mowing cycle.

MOVA LiDAX Ultra 1000

Entry-level positioning means sufficient autonomy, limited adaptive capability: Level III ensures routine cutting but cannot recover from obstacles or novel conditions without human intervention.

Wire-free convenience requires heavier reliance on sensor precision: LiDAR mapping performance degrades in rain, snow, and dense vegetation where perimeter-wire systems operate unaffected.

Who each one is wrong for

Stated by the record itself. A robot being wrong for a household is a fact about fit, not a fault.

Kärcher RCX 4
US buyers needing a confirmed USD price and local retail channel
Pricing was found only in EUR at European retailers; no confirmed US MSRP or availability was located.
Owners who mow on a fixed schedule regardless of weather
The rain sensor automatically interrupts an in-progress cycle and returns the mower to dock rather than continuing through rain.
Buyers wanting a documented blade-stop-on-lift timing spec
Lift and anti-tilt sensors are documented, but no independent test of blade-stop timing was found.
MOVA LiDAX Ultra 1000
Yards larger than 0.5 acres
The recommended 1,000 sqm (0.25 acre) coverage limits this model to single-session operation on smaller lots. Yards exceeding 0.5 acres would require multiple mowing cycles with manual repositioning, negating autonomy benefits.
Steep or irregular terrain above 45% gradient
This entry-level LiDAR mower is rated for slopes up to 45%, well below the flagship 3000 AWD's 80% rating. Rocky, uneven, or steeply graded yards beyond that exceed the model's traction and mapping capabilities, creating safety and performance risks.
Dense, tall, or specialized grass types
LiDAR line-of-sight can be compromised by tall varieties (fescue, Bermuda) and dense growth. Muddy terrain or heavy tree shade degrade sensor precision further. Standard lawn heights are the design target; unusual grass conditions require manual intervention.

What stays your job

The upkeep ownership hands back to you, whatever the autonomy level says.

Kärcher RCX 4
  • Weekly: Rinse the mowing disc, housing, wheels, and rain sensor with a low-pressure hose; Karcher’s manual prohibits solvents, immersion, and high-pressure jets.
  • Monthly: Replace all three free-swinging blades and their screws as a set; Karcher specifies every 1 to 2 months with frequent use, torqued to 1.0 Nm, using blade set 2.269-705.0.
  • Seasonally: Store dry with a full charge in the original packaging over winter; Karcher recommends charging between 18 and 25 C for battery longevity.
  • As needed: Clean the charging contacts and keep 1.5m in front of the station clear; the station is the positioning reference and cannot move without remapping.
  • As needed: Clean the rain sensor when the mower docks without rain; the manual flags false activation from dirt.
  • As needed: Change the default 0000 PIN (hold START and HOME for 3 seconds); every operation is PIN-gated.
MOVA LiDAX Ultra 1000
  • Weekly: Inspect mower body and wheels for grass buildup or debris.
  • Monthly: Clean charging dock contacts and mower charging pins; visual inspection for corrosion.
  • Seasonally: Blade inspection and replacement; LiDAR sensor lens cleaning after rain or muddy conditions.
  • Annually: Perimeter boundary or operating zone verification; software update via app if available; charging dock and weatherproofing assessment; battery storage preparation for off-season.
  • As needed: Grass height trimming to standard levels before mowing assignment; remapping if yard layout changes significantly.
05 Evidence

How much each of these is standing on.

Classifications rest on different depths of evidence. A pre-release assessment and a verified one are not the same kind of claim.

Evidence behind each classification
Robot Evidence status Sources reviewed Last assessed
Kärcher RCX 4 Verified 5 Aug 2026
MOVA LiDAX Ultra 1000 Pending Aug 2026

Robovations classifies robots; it does not rank them. Nothing on this page is a recommendation, and no manufacturer influences a classification or its placement here.