The Milwaukee M18 Fuel won because it cuts grass better than anything else running on batteries. The Lawn Review put five premium mowers through a multi-stage gauntlet, and the Milwaukee's steel deck and under-deck airflow design produced a visibly cleaner lawn than every competitor. Zero stragglers. Zero mohawks. The difference was obvious in side-by-side photos.
Power matched the cut quality. In the thick-grass bog-down test, the Milwaukee chewed through overgrown turf that stalled the Greenworks and nearly killed the Ryobi. It survived to round three, running for over 70 minutes on dual 12Ah batteries without losing blade speed.
The self-propel system sealed it. The Lawn Review called the Milwaukee the most user-friendly mower he tested, specifically praising the instant mechanical response of the drive system. No electronic lag, no dead zone at the bail lever. It feels like a gas mower. That matters when you're mowing weekly for decades.
At $1,199, you're paying a premium. The EGO ran longer and the Ryobi cost half as much. The Milwaukee earned its price through the one thing that actually shows on your lawn: the cut.
What It Won't Do
The battery gauge is bad. Instead of counting down a percentage, it shows full capacity until it drops to roughly 20%, then dies quickly. The Lawn Review found this genuinely frustrating on large yards because you can't plan your remaining mow time. If you run out of charge two rows from the end, there's no warning system to tell you it was coming.
The Ryobi 40V HP CrossCut costs $649 and survived stress tests that a $1,299 Honda couldn't match. Three separate reviewers praised its torque. Tool Review Zone compared the instant power delivery to an electric vehicle. Automotive Anonymous said it never bogged down in thick spring grass. The Lawn Review called it an "absolute tank" in the opening rounds of his overgrown-turf challenge.
The CrossCut dual-blade system is the Ryobi's party trick. Two stacked blades take a high cut followed by a lower one, producing finely diced mulch clippings that disappear into the lawn. Tool Review Zone ran it through wet, overgrown turf and the clippings were small enough to fertilize rather than clump.
75 minutes of runtime from two 6Ah batteries gives it the longest runtime in this roundup. It folds vertically for garage storage and weighs little enough to push with two fingers on flat concrete. For $649, you get 85% of the Milwaukee's real-world performance.
The catch is the cut quality. In The Lawn Review's visual inspection, the Ryobi placed last. The under-deck design doesn't generate enough suction to stand up every grass blade before cutting it, leaving visible stragglers. If you want your lawn to look like a golf course, this won't do it. If you want it to look good from the sidewalk, it will.
What It Won't Do
The build quality is the tax you pay for the price. The Ryobi is predominantly plastic. The variable-speed thumb throttle feels flimsy, and The Lawn Review experienced a mechanical flaw where it physically got stuck in the down position. Tool Review Zone noted the same cheap feel on the controls. This is a mower you'll likely replace before your Milwaukee-owning neighbor replaces theirs.
Who Should Buy Which
Milwaukee M18 Fuel 21" Self-Propelled
The cleanest cut from any battery mower, period
- Your lawn's appearance matters to you and you notice uneven cuts
- You already own Milwaukee M18 tools and have the batteries
- Your yard is medium to large (up to 1/2 acre) and you mow weekly
- You want the most gas-like responsive self-propel system available
- You plan to keep this mower for 5+ years and want steel deck durability
Ryobi 40V HP Brushless 21" CrossCut Self-Propelled
Shocking power for half the price of the premium tier
- You want serious mowing power for under $650 and shop at Home Depot
- You already own Ryobi 40V tools and batteries
- Your yard is small to medium (up to 3/4 acre) and you need maximum runtime
- You prioritize mulching performance and compact vertical storage
- You care more about getting the job done efficiently than a perfect cut finish