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Mountfield SP53 Elite 21" Petrol Lawn Mower
Mountfield SP53 Elite 21" Petrol Lawn Mower Original price was: £499.00.Current price is: £429.00. inc. VAT

Mountfield SP46 Elite 18″ Petrol Lawn Mower

Original price was: £439.00.Current price is: £379.00. inc. VAT

The Mountfield SP46 Elite combines a powerful Honda GCVx145 Autochoke engine with a self-propelled drive, making it the ideal choice for effortlessly maintaining medium-sized lawns up to 1200 m².

In stock

Description

Why buy the Mountfield SP46 Elite 18″ Petrol Lawn Mower?

  • Powered by a reliable and easy-starting Honda GCVx145 Autochoke 145cc petrol engine.
  • Self-propelled rear-wheel drive makes mowing effortless, even on gentle slopes.
  • Generous 46cm (18″) cutting width, ideal for medium-sized lawns up to 1200 m².
  • Versatile 3-in-1 cutting system: collect, mulch, or rear discharge clippings.
  • Large 60-litre hybrid grass collector with a handy ‘bag full’ indicator.
  • Durable steel cutting deck with single-lever cutting height adjustment (6 positions, 22-80mm).

Powerful and Reliable Mowing with a Honda Engine

The Mountfield SP46 Elite is a high-quality, self-propelled petrol lawnmower designed for homeowners with medium-sized gardens. At its core is the superb Honda GCVx145 OHV Autochoke engine, a 145cc powerhouse known for its reliability, low emissions, and easy recoil starting. The Autochoke system ensures optimal starting in all conditions, removing the need for priming or choke adjustments.

Versatile Cutting Performance for a Perfect Finish

This mower offers exceptional flexibility with its 3-in-1 cutting system. The precision steel blade provides a clean 46cm (approx. 18″) cut every time. Clippings can be collected in the large 60-litre hybrid grass bag, which features a convenient ‘bag full’ indicator to prevent overfilling. For a natural lawn feed, the included mulching plug can be fitted, which finely shreds the clippings and returns them to the lawn as a nutrient-rich fertiliser. A rear discharge option is also available for when collection is not needed. The cutting height can be easily adjusted through six positions, from 22mm to 80mm, using a single centralised lever.

Designed for Comfort and Durability

The SP46 Elite is built to last with a robust steel chassis. Its self-propelled rear-wheel drive, operating at a steady 3.7 Km/h, takes the strain out of mowing, especially on larger lawns or uneven terrain. Large 280mm rear wheels provide excellent traction and a smooth ride over bumps. For operator comfort, the mower features an ergonomic handlebar with a soft grip, which is also adjustable and foldable for easy, space-efficient storage. This combination of a premium Honda engine and thoughtful design makes the Mountfield SP46 Elite a fantastic choice for any gardener looking for performance and dependability, available from Sims Garden Machinery.

As an authorised UK dealer for Mountfield, Sims Garden Machinery has been advising customers for over 100 years. Choosing to buy from us, rather than a faceless online retailer, provides peace of mind. All our machinery is backed by our dedicated workshop support. Our trained sales staff are available to offer expert advice at our Stratford-upon-Avon showroom, and our team of trained mechanics is on hand for future servicing and support. For local customers, this lawnmower includes our free PDI (Pre-Delivery Inspection), local delivery, and a full handover demonstration to ensure you are confident in its operation from day one.

Not sure which machine or part is right for you?
Our team is here to help. Contact us today for expert advice.

Technical Specification

Power
Power Source Petrol
Engine Brand Honda
Engine Model GCVx145 OHV Autochoke
Displacement 145 cm³
Power 2.75 kW
Engine Rotation Speed 2900 rpm
RPM Control Fixed rpm
Starter Recoil
Fuel Tank Capacity 0.95 l
Engine Oil Tank Capacity 0.4 l
Maximum Working Area 1200 ㎡
Cutting System
Cutting Method Collecting, Mulching, Rear discharge
Cutting Width 46 cm / 18″
Deck Material Steel
Cutting Height Adjustment Centralized
Cutting Height Positions 6 positions
Cutting Height Range 22 – 80 mm
Drive System
Driving Self-propelled
Traction Rear-wheel drive
Speed Forward 3.7 Km/h
Equipment
Collector Capacity 60 l
Collector Type Hybrid with ‘warn’ indicator
Handlebar Type Ergonomic with soft grip
Wheels 200/280mm grooved wheels on ball bearings
Adjustable Handlebar Yes
Foldable Handlebar Yes
Dimensions & Weight
Product Weight 30 kg
Product Length 1550 mm
Product Width 550 mm
Product Height 1230 mm

Why buy from Sims Garden Machinery?

Authorised Dealer

Authorised main dealer

We are authorised dealers for leading brands, meaning genuine parts, manufacturer-approved training, and warranty support you can rely on.

Real People

Real people, real support

No call centres. No ticket systems. Just a knowledgeable local team you can speak to when you need help.

Expert Advice

Expert advice — not pushy sales

Our team are trained mechanics and product specialists, so you get honest, practical advice based on how you’ll actually use the machine.

Since 1908

Established, independent family business

We’re a long-standing independent dealer with deep roots in the local area — built on reputation, repeat customers, and word of mouth.

Frequently Asked Questions

What assembly is required when I buy the Mountfield SP46 Elite?

When you purchase from an authorised dealer like Sims Garden Machinery, the experience is different. For local customers, we offer a free Pre-Delivery Inspection (PDI) and handover, so it’s fully assembled and ready to mow. For national delivery, it arrives securely packaged with only the handlebars needing to be attached, which is a very simple process.

Which fuel and engine oil are recommended for this petrol mower?

The Honda engine runs on standard unleaded petrol. For engine oil, it is crucial to use a high-quality 4-stroke engine oil. We recommend the specific Mountfield oil to guarantee the best engine performance and optimal lubrication.

Is this lawnmower suitable for a medium-sized garden?

Absolutely. With its 46cm (18″) cutting width and self-propelled drive, the SP46 Elite is specifically designed for medium-sized lawns up to approximately 1200 m², making mowing efficient and effortless.

How does the mulching feature benefit my lawn?

By fitting the included mulching plug, the mower finely shreds grass clippings and returns them to the lawn. This acts as a natural fertiliser, returning nutrients and moisture to the soil, promoting a healthier, greener lawn over time.

User Manuals / Downloads


View Mountfield Brochure

Additional information
Brand

Engine Size The displacement of the engine in cubic centimetres (cc).

145

Blade Brake Clutch Indicates if the blade can be stopped while the engine keeps running.

FALSE

Collector Size The capacity of the grass collection bag or box in litres.

60

Cutting Method The cutting mechanism used (e.g., Rotary or Cylinder).

Rotary

Cutting Width The width of the grass cut in a single pass.

46 cm

Deck Material The material the cutter deck is constructed from (e.g., Steel, Aluminium).

Steel

Drive Type How the mower is propelled (e.g., Push, Self-Propelled, Variable Speed).

Self-Propelled

Electric Start Indicates if the machine features a key or push-button electric starter.

FALSE

Mowing Functions Available mowing modes (e.g., Collection, Mulching, Side-Discharge).

["Collection","Mulch","Rear-Discharge"]

Power Output (HP) The tool\'s power output measured in horsepower (hp).

3.7

Power Output (kW) The tool\'s power output measured in kilowatts (kW).

2.8

Rear Roller Indicates if the mower features a rear roller for creating lawn stripes.

FALSE

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About Mountfield
At Sims Garden Machinery we stock a wide range of Mountfield garden equipment. We offer a range of lawn tractors and rider mowers, suited for commercial lawn maintenance. We also have a range of regular lawn mowers, in both petrol and electric models. We stock cordless hedge trimmers and grass trimmers, along with more specialist gardening equipment like pole pruners. Finally, we have spare batteries for cordless lawnmowers, and battery charging stations. We can deliver Mountfield garden equipment across the UK. Upon arrival a member of our team will assemble and demonstrate your equipment to you, ensuring safe and correct usage. Our industry-trained sales team are available to help with any queries you have about our range of Mountfield gardening equipment. Speak to a member of our team today to discuss lawnmowers, hedge trimmers, or accessories. At Sims Garden Machinery we have been selling high-quality gardening equipment for over 100 years, remaining a family-run business.
Shipping & Delivery

FREE PDI, DELIVERY & HANDOVER

We offer a free delivery service for all machines within a 30 mile radius. Not only that; we build, inspect and run up every machine prior to delivery. Making sure you get a fully functional machine that is set-up and ready for use. On delivery we will run through with you any instructions & maintenance advice so you are comfortable with your new machine.

NATIONAL DELIVERY

  • Each machine will be tested prior to delivery.
  • Orders will be sent out via either ThePalletNetwork or DHL insured service.
SKU: M3-M'FIELD SP46 ELITE Categories: , ,