Hyundai HYM17150SPX Petrol Lawn Mower Review

If you’re after a simple, no-nonsense petrol mower that still offers the convenience of self-propelled drive, the Hyundai HYM17150SPX is designed to sit right in that sweet spot. With a 139cc engine, 43cm cutting width, and four-in-one cutting system, it targets everyday homeowners who want reliability without overcomplicating things.

But how does it compare to the electric-start SPeX version—and is it powerful enough for real-world lawns? Let’s take a closer look.

Hyundai HYM17150SPX: At a Glance

The HYM17150SPX is all about practical performance and value. It uses a 139cc 4-stroke petrol engine paired with rear-wheel self-propelled drive, meaning you guide it rather than push it.

Unlike its electric-start sibling (SPeX), this version uses a recoil pull start with auto choke, keeping things simpler and more affordable while still being easy to get going.

With a 17” (43cm) cutting width, it’s best suited to small and medium-sized gardens, especially those with tighter layouts or obstacles.

Comparison Table: Hyundai Petrol Mowers

Here's a quick overview of the HYM17150SPX compared to other popular Hyundai models:

Model	Engine	Cutting Width	Self-Propelled	Electric Start	Best For	Price Guide
HYM17150SPX	139cc	43cm (17")	Yes	No	Small-medium gardens, value	££
HYM17150SPEX	139cc	43cm (17")	Yes	Yes	Small-medium gardens, convenience	£££
HYM460SP	139cc-150cc	46cm (18")	Yes	No	Medium gardens	£££
HYM510SP	196cc	51cm (20")	Yes	No	Large lawns, heavy duty	££££

Jim’s Pro Tip: I’ve written a deep-dive specifically on these new models. If you want a spec-by-spec breakdown, check out my Hyundai Black Edition Lawn Mower Review Guide (2026 Models Compared).

Hyundai HYM17150SPX Petrol Lawnmower

Best for: Small to medium gardens, value-conscious buyers

Key Specifications

Spec	Detail
Engine	139cc 4-stroke petrol
Power	~3.7hp
Cutting Width	43cm (17”)
Drive Type	Self-propelled (rear-wheel)
Cutting Heights	6 (25mm–75mm)
Grass Collection	40L
Functions	Mulch, collect, rear & side discharge
Weight	~29kg

Features & Performance

Effortless mowing with self-propelled drive

The standout feature here is the rear-wheel self-propelled system, which takes the strain out of mowing larger lawns or slight inclines. Instead of pushing a 29kg machine, you simply steer it, making your mowing experience much less tiring.

Reliable 139cc engine

The 139cc engine delivers a balanced mix of power and efficiency, making it ideal for regular maintenance of typical UK lawns. While it handles standard conditions comfortably, it's not designed for extreme overgrown areas.

Four cutting modes for flexibility

This mower gives you plenty of options depending on the season and your lawn's needs:

• Collect for a clean, tidy finish
• Mulch to finely chop grass clippings and return nutrients to your lawn
• Rear discharge for quick mowing without collecting, ideal for less formal areas
• Side discharge for longer grass, spreading clippings evenly to avoid clumping

This versatility is a big plus, especially if your lawn conditions change throughout the year.

Compact and manoeuvrable

At 43cm wide, the deck strikes a nice balance—it’s wide enough to be efficient for small to medium areas, but still easy to handle around flower beds, edges, and tighter spaces.

Build Quality & Design

Hyundai keeps things functional rather than flashy, focusing on durability and ease of use:

• Steel deck for robust durability and longevity
• Foldable handles for easier storage in sheds or garages with limited space
• Large rear wheels for better traction and easier navigation over uneven terrain
• 40L grass bag with a solid top, designed for efficient collection and reduced dust

The overall feel is sturdy and practical—exactly what you want from a mid-range petrol mower.

Performance in Real-World Use

In everyday use, the HYM17150SPX feels easy, predictable, and forgiving. It's designed for consistent, reliable performance rather than tackling extreme conditions.

It performs best on:

• Regularly maintained lawns
• Small to medium garden sizes (up to approximately 700–750m²)
• Slight slopes or uneven terrain, thanks to its self-propelled drive

Where it struggles:

• Thick, wet, or very long grass, which can bog down the 139cc engine
• Larger gardens where a 46–51cm mower would be significantly faster and more efficient

Think of it as a reliable weekly mower, perfect for keeping your lawn neat and tidy, not a heavy-duty clearance machine for neglected areas.

Verdict: Is the Hyundai HYM17150SPX Worth It?

The Hyundai HYM17150SPX is a solid, no-frills petrol mower that gets the basics right. It offers excellent value for its feature set, particularly the self-propelled drive.

It’s ideal if you:

• Have a small to medium garden that you mow regularly
• Want self-propelled convenience without spending a premium
• Prefer a simple, reliable petrol setup over electric or battery models

It’s not the mower for tackling jungle-like grass or large estates—but for everyday domestic use, it delivers exactly what most people need: easy mowing, decent power, and excellent versatility for the price.

If the SPeX version is about convenience (electric start), the SPX is about value and simplicity. You lose the push-button start—but keep everything else that matters for efficient lawn care.

For many homeowners, that trade-off makes this one of the best budget-friendly self-propelled petrol mowers in Hyundai’s range right now.