Mountfield SP164 Review UK 2026
Quick verdict
Score: 8.7/10
Best for: Keeping your lawn tidy to suit its size and terrain
Not for: A lawn much bigger or rougher than this mower is built for
Bottom line: A capable lawn mower (petrol mower, 39cm cutting width, 123cc petrol engine) for a well-kept lawn.
The Mountfield SP164 is a petrol, self-propelled lawnmower designed for small to medium lawns, with a 123 cc engine and a 39 cm cutting width. The self-propelled drive reduces pushing effort, and the 40 L grass collector supports longer stretches of collecting before emptying. Exact mulching performance, noise levels, and comfort details are not stated, so buyers should confirm suitability for their priorities before choosing the best option among This lawn mower lawnmowers.
Key specifications
| Spec | Value |
|---|---|
| Engine | 123 cc |
| Cutting width | 39 cm |
| Collector | 40 L |
Pros
- Petrol mower
- 39cm cutting width
- 123cc petrol engine
- Self-propelled
- Grass box collection
Cons
- Petrol needs fuel, oil and more maintenance
- Match the cutting width and power to your lawn size
- Heavier models are harder to manoeuvre and store
Mower Type and Power
The Mountfield's SP164 is a petrol, self-propelled lawn mower, designed for mowing when pushing would be tiring, particularly on small to medium lawns. It uses a 123 cc petrol engine, which suits users who prefer combustion power over battery systems. The self-propelled drive is intended to help the mower maintain a steady pace, reducing the need for constant pushing so the operator can focus on direction and overlap. This model is less convenient than lighter cordless options because it requires fuel handling and regular starting. Overall, its lawn mower type and petrol engine suit lawns where mowing sessions occur repeatedly.
Cutting Width and Deck
A 39 cm cutting width places the SP164 in a workable size range for small to medium lawns, since each pass covers a moderate strip and helps reduce the number of overlapping strokes needed compared with narrower decks. The deck size supports typical mowing patterns, so it is well suited to mowing in straight lines and then tidying edges with shorter passes. A 39 cm deck may be less efficient on very wide lawns, because it would require more passes to cover the ground.
Lawn Size and Collection
With a 40 L grass collector, the lawn mower is designed for sessions where clippings need to be cleared and collected. The 39 cm cutting width provides a moderate mowing swath for typical garden layouts, including areas bordered by edges and pathways. For small to medium lawns, the collector capacity can help reduce the need to stop during mowing, keeping collection practical as grass clippings build up. On larger lawns, mowing time and the frequency of emptying the collector depend on how much grass is cut.
Ease of Use and Storage
Ease of use and storage depend largely on the mower's self-propelled design and its 39 cm cutting width, since these affect how smoothly it moves over typical garden ground and how easily it can manoeuvre around edges. The self-propelled drive is designed to reduce pushing effort, especially when the grass is thicker. A 39 cm deck covers ground efficiently, while still allowing turns in tighter sections, though wider paths are likely to suit it better. For storage, it is a petrol mower, so it needs space for a fuel container and careful parking. The 40 L collector also affects how much storage space is available once emptied.
Who Is This Lawn Mower For?
This mower is best suited to homeowners who want a petrol, self-propelled drive and can accept that it needs more space and care than a small cordless model. The Mountfield, with its 123 cc petrol engine and 39 cm cutting width, fits small to medium lawns, where a moderate cut size reduces the number of passes. It also suits people who prefer grass box collection, thanks to the 40 L collector. Buyers should be comfortable storing a petrol machine and handling routine upkeep, because readiness depends on fuel and maintenance. For compact gardens or minimal effort mowing, a smaller cordless alternative may feel easier.
Where to Buy in the UK
Finding the lawn mower in the UK usually means checking major garden-gear retailers and authorised The Mountfield SP164 dealers, because petrol mower stock can vary by season and local demand. Shoppers can call ahead, then compare listed specifications, since the Lawnmower SP164 is described as a 123 cc, 39 cm self-propelled petrol mower with a 40 L collector. If online availability is limited, local stores may offer floor models, and demo units can help confirm handling before purchase. Buyers should also review returns policies, because availability and bundle offers can change between branches and months.
Frequently Asked Questions
Is the Mountfield worth it?
For keeping a lawn tidy with the least hassle, the lawn mower (a petrol mower) does the job with a 39cm cutting width. Whether it suits you comes down to your lawn size, terrain and how much effort you want to put in. Check the current Amazon UK price, as mowers are often discounted in season.
What type of mower is the Mountfield?
The lawn mower is a petrol mower. Petrol mowers are powerful and cordless for big or rough lawns; cordless battery mowers are quiet and low-maintenance for most gardens; corded electric are light and cheap for small lawns; hover mowers glide for edges and slopes; manual push mowers are eco and silent for tiny lawns. Choose the type for your lawn size and terrain.
What is the cutting width of this lawn mower?
The Mountfield has a 39cm cutting width. A wider deck cuts more grass per pass so you finish faster - better for bigger lawns; a narrower deck is lighter and more manoeuvrable around borders and obstacles. Match the width to your lawn size and how tight the spaces are.
How powerful is the Mountfield SP164?
The lawn mower runs on a 123cc petrol engine. Petrol engines give strong, sustained cutting power for long grass and large lawns.
Is this lawn mower self-propelled?
Yes - the Mountfield is self-propelled, so it drives itself forward and you simply steer. That's a real help on larger lawns or any slope, saving you pushing the full weight of the mower. On small flat lawns a push mower is fine and lighter.
Does the lawn mower collect or mulch the grass?
The Mountfield collects clippings into a grass box as you mow, so you get a clean finish and simply empty it when full. Check the grass box capacity against your lawn size to avoid frequent stops.
Is the lawn mower easy to store?
Storage depends on the design - many electric and cordless mowers fold or stand upright to save space, while petrol and ride-on mowers need more room. The Mountfield SP164 is a typical example for its type; if space is tight, look for a compact-fold or upright-storage model like Flymo's EasiStore range.