Best Ryobi Petrol Lawn Mower of 2026
Ryobi petrol lawn mowers combine reliable Briggs & Stratton engines with thoughtful features for medium to large gardens. We've compared power, cutting width, deck material, and user feedback to find the best models for 2026.
Quick answer
The Ryobi RLM4619X is the best overall for 2026, offering a 46cm cutting width, powerful 190cc engine, and dependable self-propelled drive. For the best value on a smaller lawn, the Ryobi RLM36X with its 36cm deck and lightweight design is the top budget pick.
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Research updated June 2026.
Ryobi RLM4619X
Powerful 190cc engine, 46cm steel deck, and reliable self-propelled drive for large lawns.
| Product | Best for | Key Spec | Rating | Price |
|---|---|---|---|---|
| Ryobi RLM4619X | Best Overall | 190cc / 46cm / Self-Propelled | 4.5/5 | Check Amazon |
| Ryobi RLM36X | Best Budget | 125cc / 36cm / Push | 4.2/5 | Check Amazon |
| Ryobi RLM40X | Compact Power | 140cc / 40cm / Push | 4.3/5 | Check Amazon |
| Ryobi RLM51X | Large Lawns | 190cc / 51cm / Self-Propelled | 4.4/5 | Check Amazon |
| Ryobi RLM46X | Best Value Self-Propelled | 160cc / 46cm / Self-Propelled | 4.3/5 | Check Amazon |
Ryobi RLM4619X
Best OverallPros
- Powerful 190cc engine handles thick grass
- Large 60L grass collector
- Smooth self-propelled drive with variable speed
Cons
- Heavier than push models at 35kg
- No mulching plug included
The Ryobi RLM4619X is the standout performer in Ryobi's petrol mower range. Its 190cc Briggs & Stratton engine provides ample torque for cutting through overgrown grass without bogging down. The 46cm steel deck is durable and offers a good balance between maneuverability and cutting swath for most medium to large gardens.
Owner reviews consistently praise the variable speed self-propelled drive, which makes mowing slopes and long runs effortless. The 60L grass collector is generous, reducing trips to the compost heap. While it lacks a mulching plug out of the box, the overall build quality and performance make it the top recommendation for those wanting a reliable, powerful petrol mower.
Ryobi RLM36X
Best BudgetPros
- Lightweight and easy to maneuver
- Very affordable price point
- Reliable 125cc engine for small lawns
Cons
- Small 36cm cutting width takes longer
- No self-propelled drive
The Ryobi RLM36X is the entry-level petrol mower that proves you don't need to spend a lot for solid performance. Its 125cc Briggs & Stratton engine starts reliably and provides enough power for small to medium lawns up to 300 sq m. The 36cm steel deck is compact, making it easy to navigate around flower beds and garden obstacles.
Owners appreciate its lightweight design, which makes it simple to push and store. The 40L grass collector is adequate for smaller gardens. It is a push mower, so it requires more physical effort on slopes, but for flat, modest lawns, it is an excellent value choice that still delivers the familiar Ryobi build quality.
Ryobi RLM40X
Compact PowerPros
- 140cc engine offers more power than 36X
- 40cm cutting width is a good middle ground
- Steel deck is durable and rust-resistant
Cons
- Still a push mower, no self-propelled option
- Grass collector is 45L, slightly small for 40cm deck
The Ryobi RLM40X fills the gap between the budget 36X and the self-propelled models. It features a 140cc engine that provides noticeably more torque than the 125cc unit, making it better suited for thicker grass and slightly larger lawns. The 40cm steel deck offers a good balance, cutting a wider path than the 36X while remaining compact.
User reviews highlight its ease of starting and consistent cut quality. The single-lever height adjustment is convenient. While it is a push mower, the extra power means it doesn't bog down as easily. It is a strong choice for those who want more cutting width and power than the budget model but don't need self-propulsion.
Ryobi RLM51X
Large LawnsPros
- Wide 51cm cutting deck covers ground fast
- Large 70L grass collector
- Powerful self-propelled drive
Cons
- Heavy and bulky to store
- More expensive than 46cm models
The Ryobi RLM51X is designed for owners with large lawns who need to cover ground quickly. Its 51cm steel deck is the widest in the Ryobi petrol range, and paired with the 190cc engine, it powers through grass without hesitation. The self-propelled drive is robust and helps manage the mower's considerable weight.
Owner feedback praises the 70L grass collector, which significantly reduces emptying frequency. The mower handles well on flat and gently sloping terrain. Its size and weight (over 40kg) make it less suitable for small gardens or tight spaces, but for expansive lawns, it is a highly effective machine that saves considerable time.
Ryobi RLM46X
Best Value Self-PropelledPros
- More affordable than the 190cc self-propelled models
- 160cc engine is still powerful for most lawns
- Self-propelled drive reduces effort
Cons
- Less torque for very thick or wet grass
- Grass collector is 55L, smaller than RLM4619X
The Ryobi RLM46X offers a more budget-friendly entry into self-propelled mowing without sacrificing the core 46cm cutting width. Its 160cc engine provides sufficient power for regular weekly mowing on medium lawns. The self-propelled drive is a significant upgrade over push models, making mowing less tiring, especially on larger properties.
User reviews indicate it is a reliable mower that starts easily and cuts well. The 55L grass collector is adequate, though larger lawns may require more frequent emptying. It is a sensible choice for those who want the convenience of self-propulsion but don't need the top-end power of the 190cc models, offering the best balance of features and price.
What to check before buying a Ryobi petrol lawn mower
Lawn size and terrain. For lawns under 300 sq m, a 36cm or 40cm push mower like the RLM36X or RLM40X is sufficient. For lawns over 400 sq m, a self-propelled model with a 46cm or 51cm deck is recommended to reduce mowing time and physical effort. Sloped gardens strongly benefit from a self-propelled drive.
Engine power and starting. Ryobi uses Briggs & Stratton engines ranging from 125cc to 190cc. Higher cc engines provide more torque for thick or damp grass. All models feature a simple pull-start mechanism, which owners generally find reliable, but a primer bulb is present on most for easier cold starts.
Cutting width and deck material. A wider cutting deck means fewer passes. Steel decks are standard on Ryobi petrol mowers and offer good durability. Consider the width of your garden gates and storage space, as wider decks like the 51cm model are larger and heavier to maneuver in tight areas.
Grass collector capacity. Larger collectors (55L to 70L) reduce the frequency of emptying. If you have a large lawn, a bigger collector is a significant time-saver. Smaller collectors (40L to 45L) are fine for small gardens but will fill quickly on larger areas.
Mistakes to avoid
Choosing a push mower for a hilly lawn. A self-propelled model is essential for slopes to prevent fatigue and maintain control. Push mowers on hills can be physically demanding and less safe.
Ignoring storage space. The larger self-propelled mowers like the RLM51X are heavy and bulky. Ensure your shed or garage has enough floor space and a wide enough door to accommodate the mower's dimensions.
Neglecting to check for a mulching plug. Not all Ryobi petrol mowers include a mulching plug as standard. If you want to mulch grass clippings back into the lawn, check the product specifications or purchase the plug separately.
Buying too much power for a small lawn. A 190cc self-propelled mower on a 200 sq m flat lawn is overkill. You will pay more and have a heavier machine to maneuver. Match the mower to your lawn size for the best value and ease of use.
FAQs
Are Ryobi petrol mowers reliable?
Yes, Ryobi petrol mowers are generally reliable, using proven Briggs & Stratton engines. Owner reviews indicate consistent starting and good long-term durability with basic maintenance.
What oil does a Ryobi petrol mower take?
Ryobi recommends SAE 30 or 10W-30 engine oil for their petrol mowers. Always check the specific model's manual for the exact oil capacity and type.
How do I start a Ryobi petrol lawn mower?
Most models have a primer bulb and a pull-start cord. Press the primer bulb 3-5 times, set the throttle to fast, and pull the cord firmly until the engine starts.
Do Ryobi petrol mowers have a mulching function?
Some models offer mulching, but it may require a separate mulching plug accessory. Check the product description to see if a plug is included or needs to be purchased.
What is the warranty on a Ryobi petrol mower?
Ryobi typically offers a 2-year warranty on their petrol lawn mowers. Warranty terms can vary, so confirm with the retailer or Ryobi's official policy.
Can I use a Ryobi petrol mower on wet grass?
It is not recommended as it can clog the deck and collector. Wet grass also increases the risk of slipping and provides a poorer cut quality.
How often should I change the oil?
Change the oil after the first 5 hours of use, then annually or every 25 hours of operation. Regular oil changes extend the engine's life.
What size lawn is best for a 46cm Ryobi mower?
A 46cm cutting width is ideal for medium to large lawns between 300 and 600 sq m. It offers a good balance of speed and maneuverability.
Are Ryobi spare parts easy to find?
Yes, Ryobi has a wide distribution network, and spare parts like blades, belts, and air filters are readily available online and at many home improvement stores.
Which is better: Ryobi RLM4619X or RLM46X?
The RLM4619X has a more powerful 190cc engine and a larger 60L collector, making it better for tougher grass. The RLM46X is a more affordable self-propelled option with a 160cc engine.
Our verdict
For most homeowners, the Ryobi RLM4619X is the best overall petrol lawn mower, offering the ideal combination of power, cutting width, and self-propelled convenience. If you have a smaller lawn and a tighter budget, the Ryobi RLM36X provides excellent value without sacrificing reliability.