Maker
Mammotion
7 models with published specs, from 0.2 to 1.25 acres and 80% to 80% grade. Ranked by rated area, because that is the spec that rules machines out first.
Area range0.2–1.25 ac
Grade range80–80%
SteepestLUBA 3 AWD 5000
Verified specs6 of 7
Sold viaOnline retail
The range
LUBA 3 AWD 50001.25 ac · 80% · AWD
LUBA 3 AWD 5000H1.25 ac · 80% · AWD
LUBA 2 AWD1.25 ac · 80% · AWD
LUBA 3 AWD 30000.75 ac · 80% · AWD
LUBA 3 AWD 15000.37 ac · 80% · AWD
LUBA mini 20.25 ac · 80% · AWD
Specs from a single source — we are still verifying these
LUBA mini AWD 800H0.2 ac · 80% · AWD
Where the range runs out
The largest Mammotion we have specs for is the LUBA 3 AWD 5000 at 1.25 acres. Allowing the quarter more that real lawns need for borders and travel paths, that covers 1/4 acre, 1/2 acre, 1 acre. For 2 acres or 3 acres or 5 acres you need another maker.
On grade, the LUBA 3 AWD 5000 tops the range at 80% — 38.7°, not 80°. That is genuinely steep ground, and few makers reach it.