This list is for yards with real hills, and a mower qualifies if the brand rates it for slopes of 50% or more. Published tests often fall short of brand claims, and Notebookcheck's ramp stopped near 70% on two mowers rated for 80%. Leave a margin below the rating, and check how each mower handled wet grass on inclines. How we score.
Compact AWD LiDAR mower with an edge disc for tight, sloped yards
Ties the LUBA 3 at 8.0 and ranks first because it costs about $600 less. Techaeris rated it 9.0/10 and found navigation reliable under trees, though runtime fell to about 90 minutes on slopes or thick grass. Reviewers' main complaint is coverage for the price, since it tops out at 0.37 acre.
AREA 0.37 acreMAX SLOPE 80%NAVIGATION LiDAR + visionCUT WIDTH 20 cm + 12 cm edgeSCORE 8.0
LiDAR, vision and NetRTK flagship for steep, complex lawns
Did better than the mini 2 in published tests, with 5/5 for performance from TechRadar and 4.5/5 from Gear Diary, but its higher price pulls it level at 8.0. It sits well clear of the Dreame A3 on test results. Reviewers flagged front wheel scuffing during zero turns and app glitches.
AREA 0.37 to 1.25 acresMAX SLOPE 80%NAVIGATION LiDAR, vision, NetRTKCUT WIDTH 15.7 inSCORE 8.0
LiDAR and vision AWD mower, no RTK, for hilly 0.62 acre lawns
A clear step down in test scores from the two LUBAs: Gizmodo gave the 3500 version 3.5/5 after seeing ruts and bald spots on damp slopes. It still ranks above the Ecovacs GOAT because it costs about $800 less and needs no RTK. Notebookcheck's ramp test reached just over 70% against its 80% claim.
Dual LiDAR mower with a built in edge trimmer, no RTK needed
Bob Vila rated it 4.5/5, on par with the top two, and its built in trimmer replaced most manual edging in BGR's test. It ranks last of the scored mowers because it is among the priciest here, about $800 more than the Dreame. Its 50% slope rating is also lower than the AWD rivals above it.
Budget network RTK and vision mulching mower for 0.37 acre
Pairs network RTK with camera navigation, a 60% working slope and a swappable battery for about $50 more than the i210. Bob Vila named it Best Bang for the Buck but found setup frustrating and narrow sections hard. It is not ranked yet because that review gave no numeric score to rank it on.
AREA 0.37 acreMAX SLOPE 60% (65% driving)NAVIGATION Network RTK + VSLAMCUT WIDTH 8.66 inSCORE not yet
Premium LiDAR and vision AWD mower for 0.75 acre with slopes
A LiDAR and camera AWD mower rated for 0.75 acre and 80% slopes, with up to 150 zones and a 3 year warranty. Bob Vila named it Best Premium Pick, while PCWorld saw automatic mapping fail on a complex lawn. It is not ranked yet because neither review gave a numeric score to rank it on.
AREA 0.75 acreMAX SLOPE 80%NAVIGATION LiDAR + visionCUT WIDTH 15.8 inSCORE not yet
Four wheel drive RTK and vision mower for complex yards up to 1 acre
Rated for 1 acre and 84% slopes, with four wheel drive and a 17 in deck. Bob Vila named it Best Overall and PCWorld gave it Editors' Choice, but neither published a numeric score, so it is not ranked yet. It is also large, heavy and among the priciest mowers here.
AREA 1 acreMAX SLOPE 84%NAVIGATION Network RTK + VSLAMCUT WIDTH 17 inSCORE not yet