Worx Landroid M WR147 vs Worx Landroid L WR155

Quick take: The Worx Landroid M WR147 costs $97 less; the Worx Landroid L WR155 is rated for a larger lawn (0.5 acres).

SpecWorx Landroid M WR147Worx Landroid L WR155
Price~$902~$999
Rating
NavigationBoundary WireBoundary Wire
Max Lawn Size10,890 sq ft (10,890 sq ft)0.5 acres (21,780 sq ft)
Max Slope30% (17°)30% (17°)
Cutting Width7"8"
Cut Height1.5"–3.5"1.5"–3.5"
DriveRWDRWD
Runtime
Charge Time
Noise59 dB59 dB
Weight24.3 lb25.8 lb
Obstacle DetectionBumper collision sensors plus lift and tilt stops; no camera or ultrasonic in the box (ACS kit is an add-on), so it nudges whatever the wire does not exclude.Bumper collision sensors plus lift and tilt stops; no camera or ultrasonic unless you add the ACS kit, so obstacles get nudged rather than avoided.
Edge CuttingYesYes
Rain SensorYesYes
CellularNoNo
Anti-TheftPIN lock and lift alarm; GPS tracking only with the optional Find My Landroid modulePIN lock and lift alarm; GPS tracking only with the optional Find My Landroid module
Warranty3-year limited3-year limited

Pros & cons

Worx Landroid M WR147

  • Street price around $900 against a $1,199.99 list, and often less on clearance
  • Battery is shared with the whole Worx 20V/40V/80V Power Share line
  • Cut to Edge blade placement leaves very little trimming along borders
  • Everything needed for install, including 820 ft of wire, is in the box
  • 3-year warranty is longer than most budget robot mowers
  • Bump-and-turn obstacle handling; ultrasonic avoidance is a paid add-on
  • 30% slope limit rules out hilly yards
  • Cut height tops out at 3.5 in, tight for tall-fescue lawns
  • No GPS or cellular without the Find My Landroid module

Worx Landroid L WR155

  • Lowest cost per acre of any name-brand half-acre robot, often near $1,000 or less
  • Widely stocked at big-box retailers, so returns and parts are easy
  • Floating blade disc self-levels over ruts and roots
  • Cut to Edge and rain delay are standard, not add-ons
  • Power Share battery doubles as a spare for other Worx tools
  • Roughly an hour per charge means a lot of dock trips on a full half acre
  • 30% slope rating is the weakest in its price class
  • No obstacle avoidance beyond the bumper without the ACS kit
  • Wire install is a real afternoon-plus job and wire breaks are on you