Description
Mountfield SP42 Lawn Mower – Is This the Best Value Self-Propelled Lawn Mower for UK Gardens?
The Mountfield SP42 self-propelled petrol lawn mower is one of the most popular choices for UK homeowners with small to medium-sized gardens (up to 350m²). Powered by a reliable 123cc STIGA ST120 Autochoke engine, it delivers strong cutting performance with minimal effort.
If you want a mower that:
- Reduces pushing effort
- Handles slopes easily
- Cuts thicker or longer grass
The Mountfield SP42 is one of the best-value petrol lawn mowers available today.
You can view our full range of lawn mowers, or specifically our range of Mountfield lawn mowers or petrol lawn mowers.
Key Features & Benefits
Self-Propelled Drive (Less Effort, Faster Mowing)
The rear-wheel drive system pulls the mower forward, making it ideal for slopes, larger lawns, and users wanting less physical strain.
Powerful 123cc STIGA Engine
- Autochoke for easy starting
- Reliable and consistent performance
- Handles longer or damp grass effectively
41cm Cutting Width – Ideal for UK Gardens
A perfect balance between coverage and manoeuvrability for small to medium lawns.
60L Grass Collector + Mulching Option
- Large collector reduces emptying time
- Optional mulching improves lawn health
Durable Steel Deck
Built for long-term durability in real garden conditions.
Who Should Buy the Mountfield SP42?
- Gardens between 100–350m²
- Users wanting petrol power with less effort
- Lawns with slopes or uneven terrain
- Anyone upgrading from a push mower
SP42 vs HP42 vs Princess 38 Li – Comparison
| Feature | SP42 (Self-Propelled Petrol) | HP42 (Push Petrol) | Princess 38 Li (Battery) |
|---|---|---|---|
| Drive | Self-propelled | Push | Push |
| Power | 123cc petrol | 123cc petrol | Battery |
| Effort | Very low | Medium | Low |
| Cutting Width | 41cm | 41cm | 38cm |
| Best For | Slopes & easy mowing | Flat lawns & budget | Small, quiet gardens |
| Noise | High | High | Low |
| Maintenance | Medium | Medium | Low |
Key takeaway:
- SP42 = best overall performance and ease of use
- HP42 = cheaper but no self-propelled – more effort required
- Princess 38 Li = best for quiet, low-maintenance mowing
Expert Insight from Masseys
At Masseys, we regularly supply and service Mountfield lawn mowers. The SP42 stands out as one of the most reliable entry-level self-propelled petrol mowers available.
- Consistently easy to start
- Ideal upgrade from push mowers
- Strong real-world reliability across UK gardens
In everyday use, it’s a dependable, no-nonsense mower that delivers excellent value.
Why Buy From Masseys?
- Established Derbyshire family business
- Expert advice from garden machinery specialists
- Assembly and setup options available
- Workshop servicing and genuine spare parts
You’re buying from a trusted local specialist, not just an online retailer.
Technical Specifications
- Engine: STIGA ST120 Autochoke (123cc)
- Drive: Self-propelled
- Cutting Width: 41cm
- Cutting Heights: 25–70mm (6 settings)
- Collector: 60L
- Deck: Steel
- Weight: Approx. 25kg
Frequently Asked Questions
Is the Mountfield SP42 good for slopes?
Yes, the self-propelled drive makes it ideal for sloped or uneven lawns.
Is it better than the Mountfield HP42?
Yes, if you want less effort. The HP42 is a push mower, so requires more physical work.
Is petrol better than battery?
Petrol offers more power for tougher lawns, while battery mowers are quieter and require less maintenance.
Final Verdict – Is the SP42 Worth It?
The Mountfield SP42 is one of the best-value self-propelled petrol lawn mowers in the UK.
- Strong, reliable engine
- Easy to use
- Ideal for typical UK gardens
- Excellent balance of price and performance
If you want power and convenience without overspending, the SP42 is a smart choice.
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