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Garden · Mistakes to Avoid

Lawn Mowers: Mistakes to Avoid When Buying

By the Nest & Yard editorial teamUpdated 2026-08-094 min read

Our pick: the Flymo EasiStore 300R Electric Rotary Lawn Mower, 30cm — the best Lawn Mowers we tested, from £94.95.

Investing in a new lawn mower can be a fantastic way to transform your outdoor space, but it’s easy to fall into traps that end up costing you time and money – particularly when shopping for options like the Bosch Rotak 32R Electric Rotary Lawnmower or the Flymo EasiStore 300R. Before you commit to a purchase, it's wise to be aware of common mistakes made by UK gardeners when selecting a lawn mower, such as overlooking the ongoing costs of consumables or choosing a model with features that simply aren’t needed for your lawn size.

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Bosch Rotak 32R Electric Rotary Lawnmower

#1 Pick

Bosch Rotak 32R Electric Rotary Lawnmower
Rated 4.6 out of 5 stars (3,201)
  • Electric
  • Small gardens
  • 2 Years

Currently unavailable

Pros

  • 1200W motor for reliable cutting power
  • 31-litre grass box
  • Compact 32cm width suits small-mid gardens

Cons

  • Corded — limited reach
Check on Amazon →
Flymo EasiStore 300R Electric Rotary Lawn Mower, 30cm
Editor's Choice

#2 Pick

Flymo EasiStore 300R Electric Rotary Lawn Mower, 30cm
Rated 4.4 out of 5 stars (4,434)
  • 1200W
  • Small Gardens
  • 2 years

£94.95

Pros

  • 30cm cutting width suits small to medium lawns
  • Space-saving vertical storage position
  • Rear roller creates a striped finish

Cons

  • Corded — 10m cable limits range from a socket
View on Amazon →
Bosch Rotak 37 LI Cordless Rotary Lawn Mower

#3 Pick

Bosch Rotak 37 LI Cordless Rotary Lawn Mower
Rated 4.5 out of 5 stars (2,764)
  • 36V
  • Medium Gardens
  • 2 Years

Currently unavailable

Pros

  • 37cm cutting width suits medium to larger lawns
  • Rear roller gives professional-looking stripes
  • Cordless freedom with a 36V lithium-ion battery

Cons

  • Battery and charger sold separately on some bundles
Check on Amazon →
Flymo Speedi-Mo 360VC Electric Rotary Lawn Mower, 1500W, 36cm Cutting Width
Best Value

#4 Pick

Flymo Speedi-Mo 360VC Electric Rotary Lawn Mower, 1500W, 36cm Cutting Width
Rated 4.5 out of 5 stars (2,589)
  • Electric
  • Mid-size gardens
  • 40L grass box

£110.00

Pros

  • Powerful 1500W motor suits mid-size lawns
  • 40L grass box needs fewer trips to empty
  • Height adjustment for different grass types

Cons

  • Corded — limited reach from the socket
View on Amazon →

FAQ

I’m only mowing a small garden – should I really be buying a large ride-on lawn mower?

A larger machine can be overkill and more expensive than necessary. Consider starting with a lightweight cylinder or rotary mower, which will usually suffice for smaller gardens and are significantly cheaper.

I’ve been told to look at ‘mulching mowers’, but I don't understand what that means.

Mulching mowers finely chop grass clippings and return them to the lawn as a natural fertiliser – this is beneficial, but not essential for all lawns. Check your garden size first; you may find a standard mower does the job perfectly.

I’m tempted by mowers with lots of extra attachments like rear bagging units - are they worth the cost?

Assess whether you actually need these features – many attachments add to the initial price and can be purchased separately later if required. A basic mower will often perform adequately for most lawns.

I’m worried about not being able to start my new lawn mower.

Always check the included starting fuel or starter fluid quantity before purchase, as some models require an additional small cost to get started; ensure you understand the instructions thoroughly.

My lawn is quite uneven – do I need a specialist mower with variable speed?

Variable speed mowers are typically found on more expensive machines and are rarely necessary for standard lawns. A cylinder mower offers excellent cutting performance even on slightly uneven ground.

I've bought a rotary mower, but it’s struggling to cut through long grass.

Rotary mowers generally struggle with very tall or thick grass; consider using a trimmer/strimmer to clear the area first before mowing for best results.

How much should I be budgeting for a new lawn mower?

The cost varies considerably depending on size and features, but you can find decent rotary mowers from around £200, while ride-on mowers start significantly higher – research carefully to match your needs.

I’m considering buying an electric lawn mower; what about charging times?

Electric mowers often have longer charging times than petrol alternatives, so factor this into your usage planning and consider the power of the battery for larger areas.

What should I do with the grass clippings after mowing?

For rotary mowers, leaving the clippings on the lawn (grasscycling) is often beneficial, providing nutrients. However, cylinder mowers typically produce cleaner cuts and may require bagging.

I'm unsure about the engine power – what should I be looking for?

For smaller lawns, a 139cc or less engine is usually sufficient; larger gardens might benefit from 176cc or more, but consider fuel consumption alongside power.

In depth

It’s easy to get swept up in the excitement of a pristine lawn after investing in a new lawn mower. However, a significant number of UK homeowners make costly mistakes when purchasing one, often leading to disappointment and unnecessary expenditure. Many buyers focus solely on the initial purchase price without considering the total cost of ownership – including running costs, maintenance, and potential accessories – or failing to properly assess their needs. Let’s delve into some common pitfalls and, more importantly, how you can avoid them.

One of the most frequent errors is selecting a lawn mower that's simply too large for your garden size. It’s tempting to be drawn in by powerful machines promising effortless operation across vast expanses, but this often results in overspending on features and capabilities you’ll rarely utilise. A heavy-duty ride-on mower might seem appealing for larger lawns, but if you only have a small suburban plot of perhaps 500 square metres or less, it will be significantly underpowered, difficult to manoeuvre around obstacles, and frankly, a considerable waste of money. Instead, carefully measure your lawn’s dimensions – length, width, and any areas with significant curves or obstructions – before even browsing. Opt for a lightweight petrol mower in the 160-200cc range for gardens under an acre. Consider the turning radius; a smaller, lighter machine will be much more agile navigating around trees, flowerbeds, and patios.

Another common issue is paying excessive attention to manufacturer specifications that don’t align with your actual requirements. Lawn mower marketing frequently highlights impressive features like variable speed transmissions, automatic deck height adjustment, or mulching capabilities – all of which can add a significant amount to the purchase price. Unless you genuinely need these functions, you're essentially paying for bells and whistles that will sit unused. Many homeowners only require basic cutting performance, and a straightforward petrol mower with adjustable wheels and a simple throttle control is perfectly adequate. Before committing to a particular model, honestly assess how you intend to use the mower. Do you have particularly long grass? Are there many bends and curves in your lawn? Do you need to cut close to borders or delicate plants? If not, stick to a basic machine with a robust cutting deck – durability is often more important than fancy features.

Furthermore, prospective buyers frequently overlook the ongoing costs associated with owning a petrol lawn mower. Beyond the initial purchase price, there are fuel expenses, oil changes, spark plug replacements, air filter cleaning, and potentially blade sharpening or replacement. These maintenance items can quickly add up over time, particularly for more complex machines. Factor in the cost of an engine-specific oil and consider investing in a basic tool kit – a wrench set and pliers will be essential for minor repairs and adjustments. It’s also wise to research readily available spare parts and service providers in your area; having access to reliable support can save you time and money in the long run. Don't underestimate the cost of replacing worn-out belts or cables, either – these are common wear items on many models.

Beyond just the running costs, buyers often fail to account for the initial fitting expenses. Many higher-end mowers come with accessories like grass collection boxes, extension cables, and specialist attachments designed for trimming edges or tackling difficult areas. These can easily add £50 - £200 to the overall investment, particularly if you’re buying a ride-on mower. Before adding these extras to your shopping list, consider whether they are genuinely necessary. If you're primarily focused on maintaining a rectangular lawn, an extension cable might be redundant. Similarly, a fancy edging kit could be overkill for a small garden. Stick to the essentials – a good quality fuel cap and possibly a set of replacement blades – to keep your initial outlay manageable.

Finally, buyers are sometimes swayed by marketing hype and inflated specifications that don’t represent real-world performance. A lawn mower boasting an incredibly high engine power rating might sound impressive, but it doesn't necessarily translate into better cutting performance or easier handling. Focus on reviews from reputable sources and prioritise reliability over raw horsepower. Consider the overall build quality – a well-constructed machine will typically last longer and require less frequent maintenance than a cheaper model with flimsy components. Read user forums and online communities to gain insights into real-world experiences, rather than relying solely on manufacturer claims. A slightly older, well-maintained mower from a trusted brand is often a better investment than a shiny new one over-hyped for the market.

The Nest & Yard editorial team

Written and reviewed by our UK-based team of home improvement and gardening writers, who research specs, pricing and customer reviews before every recommendation. Reviewed and updated on 2026-08-09.

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