Brand guide · Updated May 2026
Ryobi Lawn Mowers
If you own a Ryobi drill - and a surprising number of UK households do, mostly bought from Homebase or B&Q on a wet Saturday - then a Ryobi lawn mower is genuinely the rational choice. Same battery, same charger, same colour scheme. The 18V ONE+ platform now spans 280 tools and counting. The mowers themselves aren't the absolute best in any category, but they're the best value by a country mile, and that's usually what matters.
Best Ryobi lawn mowers
Ryobi RY18LMX40A-150
Ryobi
The bestselling Ryobi mower in the UK and the one to buy if you already own a Ryobi drill, hedge trimmer or strimmer. Buy bare-tool and you're under £160 for a real 40 cm deck - unbeatable value.
Pros
- + 18V ONE+ - same battery as your drill
- + 40 cm deck, brushless motor
- + Self-propelled variant available
Cons
- − Single 18V can struggle on damp grass
- − Cut-height adjustment is fiddly
Ryobi RY36LMX46A-150
Ryobi
The 36V version steps up to a proper mid-size mower. The twin-18V system runs both batteries together for the higher voltage and gives you 50-60 minutes of runtime - easily enough for 600 m² of typical UK lawn.
Pros
- + 36V MAX - twin 18V batteries in series
- + 46 cm steel-reinforced deck
- + Mulching plug included
Cons
- − Heavier at 26 kg
- − Twin batteries cost more to replace
Ryobi RY18LMH37A
Ryobi
If you don't need 40 cm and don't want to spend £270, this is the entry point into the Ryobi cordless mower range. Brushless motor at this price was almost unheard of in 2022 - now it's standard.
Pros
- + Cheapest decent Ryobi cordless
- + 37 cm deck for small-medium lawns
- + Brushless motor at this price
Cons
- − Smaller grass box (40 L)
- − Plastic deck flexes a touch
The 18V ONE+ and 36V MAX battery platforms explained
Ryobi runs two cordless platforms in the UK and they overlap a bit. 18V ONE+ is the original lineup - over 280 tools, batteries from 1.5 Ah to 12 Ah, lime-green accent. The mowers in this range use a single battery for the lower-power models and two batteries for higher-output ones (the second slot doubles runtime, doesn't increase voltage). 36V MAX is the newer high-output platform - a different battery shape, higher voltage, properly competitive with Bosch 36V Power for All. Most Ryobi outdoor tools are 18V; only the bigger mowers, blowers and chainsaws are 36V MAX.
The honest answer for buyers: if you have a small lawn and any other Ryobi 18V tools, stick with the 18V mower. If you have a bigger lawn (over 400 m²) and you're building a fresh garden tool kit from scratch, go straight to 36V MAX - it's the future of the range.
Where Ryobi fits vs rivals
Ryobi sits in the value-meets-ecosystem corner. Bosch is the obvious rival - better build quality, better dealer network, slightly worse value, smaller tool range. Makita and DeWalt are the trade-grade alternatives - significantly more expensive but harder-wearing. Worx is the closest direct competitor on price and ecosystem (the Worx 20V platform plays similar games). For most domestic UK buyers, the real choice is Ryobi vs Bosch - and Ryobi wins on tool count, Bosch wins on per-tool quality.
Common quirks and known issues
Three things crop up repeatedly across verified Ryobi owner reviews. The cut-height lever is fiddly - it works fine but it's not as satisfying as Bosch's single-lever system. The grass box on the 18V models is a bit small for the deck width - you'll empty more often. And single-18V mowers stall on damp tussocky grass - if your lawn doesn't get mown weekly, get the 36V MAX or buy two 4 Ah batteries to share. None of these are dealbreakers; just things to know.