Stihl built its name on professional chainsaws, and the same engineering culture runs through its lawn mowers: heavy-duty build, strong batteries, and a price that sits above the supermarket brands. The question for most gardeners is not whether a Stihl is well made, because it generally is, but which model is worth the money for the size of lawn you actually have. Buy too small and you will struggle on a big plot. Buy the top model for a courtyard and you have spent hundreds more than you needed. This guide matches the main Stihl mowers to real garden sizes and explains where the money goes, so you can pick the one that fits rather than the one with the best marketing.
The range now leans heavily toward cordless battery models built around Stihl’s AK and AP battery systems, with a smaller line of petrol mowers still sold for those who want one. We will take the battery models first, because for most home lawns they are now the sensible choice.
The Battery Range, Matched to Lawn Size
The entry point is the RMA 235, a compact cordless mower with a 33cm (13 inch) cutting width aimed at small gardens. It runs on the lighter AK battery system and is easy to store and push. It suits a lawn up to roughly 150m2, and at around £160 to £200/$200 to $250 for the bare tool it is one of the more affordable ways into the Stihl battery family. One important note: this model has been subject to a manufacturer safety recall relating to blade braking time, so if you buy used, check the serial number against Stihl’s recall notice and have any affected unit corrected before use. On a new purchase from a dealer this will already have been handled.
Step up to the RMA 443 and you reach the model that suits the largest share of family gardens. It cuts a 41cm (16 inch) swath and handles lawns up to around 300m2 on the AK 30 battery, more if you run a larger pack. The bare mower sells for around £449/$549, with battery-and-charger sets reaching close to £700/$850 depending on the bundle. The 443 is where Stihl’s build quality starts to feel worth the premium: a solid deck, a comfortable folding handle, and enough power to cope with slightly longer or damp grass without bogging down. The RMA 443 TC adds a few comfort features, and the 443 V adds variable-speed self-propulsion, which is the feature to look for if you have any slope or a large area to cover, because it drives itself forward and you simply steer.
At the top of the residential range sits the RMA 448, with a 46cm (18 inch) cut and the same vario self-propelled drive on the 448 V. This is the model for a truly large lawn, somewhere up to 600m2 with the right battery, where the wider deck means fewer passes and the powered drive saves your arms. Expect to pay from around £550/$650 for the tool, more with batteries. The extra cutting width is the main reason to choose it over the 443: a 46cm deck clears a given area in noticeably fewer lengths than a 41cm one, which adds up to real time saved on a big plot.
How the Battery System Affects Value
The single biggest factor in what a Stihl mower really costs you is the battery, and it is the part buyers most often misjudge. Stihl sells most mowers as a “bare tool” or “skin” without a battery or charger, and the headline price you see is usually that bare figure. Adding a battery and charger can lift the total cost by half again. This is deliberate, and it works in your favour if you plan to build a set of tools. The AK system battery that powers the smaller mowers also runs Stihl’s hedge trimmers, blowers, and grass trimmers, so once you own a couple of batteries you can buy further tools as bare units and share the packs. Spread across three or four tools, the battery cost stops looking steep.
The mechanism behind run time is worth understanding so you buy the right pack. Battery capacity is measured in watt-hours, and a higher figure means more cutting before a recharge. A small AK 10 battery might clear a courtyard, while a lawn of 300m2 wants an AK 30 or larger to finish in one charge. The mistake people make is pairing a large mower with a small battery to save money, then finding they have to stop and recharge halfway through. Match the battery to the lawn, not just to the mower. A second battery, charged and ready, is often a better spend than upgrading the mower itself, because it doubles your working time for less than the price of a new machine.
Battery mowers also change the maintenance picture entirely. There is no oil to change, no spark plug, no carburettor to gum up over winter, and no fuel to go stale. That removes the most common reasons a petrol mower refuses to start in spring. The trade-off is that batteries lose a little capacity over years of use and eventually need replacing, so factor a replacement pack into the long-term cost. For most home lawns the convenience wins easily, which is why we generally rate battery mowers as the best choice for most gardens.
It is also worth weighing a Stihl against the rivals at each price point before you commit. In the mid range the RMA 443 competes directly with battery mowers from Ego, Bosch, and Greenworks, several of which undercut it on price for a similar cutting width. What you pay extra for with Stihl is build quality, dealer support, and a battery platform shared with its trimmers and blowers, which only pays off if you buy into that ecosystem. If you own no other garden power tools and never will, a cheaper standalone battery mower may give you the same cut for less. If you are building a cordless armoury, the shared battery tips the maths back toward Stihl. Most of the mowers also offer mulching, where a plate blocks the discharge and the blade chops clippings finely enough to fall back into the sward and feed it, so check that the model and a mulching plug are included if that is how you like to cut.
When a Petrol Stihl Still Makes Sense
Stihl still sells petrol mowers such as the RM 448, and there are situations where one is the better buy. If your lawn is very large, well beyond 600m2, or rough and only cut occasionally, a petrol engine gives you unlimited run time as long as you carry fuel, and it will power through long, wet, or tussocky grass that can stall a battery model. Petrol also tends to cost less to buy for a given cutting width, because you are not paying for an expensive battery.
The cost moves to upkeep. A petrol mower needs an oil change roughly once a season or every 25 to 50 running hours, a clean or replacement air filter, an occasional spark plug, and fuel that is either used up or stabilised before winter so it does not turn to varnish in the carburettor. Skip that winter routine and you are the person whose mower will not start in spring. If you are happy to do basic engine care, a petrol Stihl is a durable workhorse. If the idea of draining fuel and changing oil fills you with dread, the battery range will serve you far better and the higher upfront price buys you years of pull-and-go simplicity.
The honest summary is this. For a small lawn, the RMA 235 is enough if you accept its limits. For the typical family garden up to 300m2, the RMA 443, and the 443 V if you have a slope, is the model most people should buy and the one where Stihl’s build quality earns its keep. For a large lawn, the RMA 448 V or a petrol RM 448 makes sense depending on whether you prefer battery convenience or unlimited run time. Spend according to your lawn size and battery plan, and a Stihl will likely outlast several cheaper mowers. Overspend on capability you will never use, and the badge is just an expensive way to cut a small lawn.
