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The 7 Best Small Outboard Motors of 2024: An Expert Buyer’s Guide

That sputtering sound, the pull-cord that just won’t catch, the dream of a peaceful fishing trip shattered by a noisy, unreliable motor. We’ve all been there. Choosing the right small outboard motor is the difference between a day on the water filled with joy and one spent in frustration. You’re not just buying an engine; you’re buying freedom, reliability, and peace of mind.

So, what is the best small outboard motor? The best small outboard motor depends on your primary need: for unmatched reliability and fuel efficiency, the Honda BF2.3 is top-tier; for the lightest portable 4-stroke option, the Suzuki DF2.5 is exceptional; and for the best value and quietest electric start, the Tohatsu MFS 2.5 is a standout choice.

This guide goes beyond a simple list. We will equip you with the knowledge to make a confident purchase, drawing on decades of marine engineering expertise to break down the key decision factors, review the top models, and provide expert maintenance tips.

Understanding Your Needs: How to Choose the Right Small Outboard

Before we dive into specific models, it’s crucial to understand the “why” behind your purchase. A motor perfect for a lightweight sailing dinghy may be woefully underpowered for a heavy inflatable RIB.

What is a “Small Outboard Motor”?

In this context, we’re focusing on portable outboards typically ranging from 2.5 to 6 horsepower. These are the workhorses for dinghies, tenders, small fishing boats, jon boats, and as auxiliary power for sailboats. Their defining characteristic is portability—they are designed to be easily lifted, transported, and stored.

Key Decision Factors Before You Buy

Boat Size and Weight

This is the most critical factor. A general rule of thumb is 1-2 HP per 100 lbs of total weight (boat + passengers + gear). Under-powering your boat is dangerous and inefficient, while over-powering can be unsafe and is often illegal. Always check your boat’s capacity plate.

Propulsion Type: 2-Stroke vs. 4-Stroke vs. Electric

4-Stroke: The modern standard for most boaters. They are quieter, more fuel-efficient, and emit fewer pollutants. The trade-off is they are heavier and more complex than 2-strokes.
2-Stroke: Lighter and simpler, with a great power-to-weight ratio. They require a gas-oil mix. While phased out in many regions due to emissions, they are still valued for their portability and raw power where legal.
Electric: Zero emissions, virtually silent, and incredibly easy to start and maintain. The limitations are runtime (battery life) and power, making them best for short trips on calm, protected waters.

Starting Mechanism: Pull-Start vs. Electric Start

Pull-Start: Lighter, simpler, and less expensive. It’s the go-to for most small motors but requires physical effort.
Electric Start: Offers incredible convenience, especially in an emergency or after a long day. It adds weight, cost, and complexity, as it requires a battery.

Shaft Length: Short vs. Long

Getting this wrong is a critical mistake. A shaft that’s too short will cavitate (draw air), and one that’s too long creates drag and handling issues.
* Short Shaft (15″): Standard for most small boats and dinghies.
* Long Shaft (20″): Necessary for sailboats and boats with higher transoms.

Intended Use

Your primary activity dictates the ideal motor.
* Trolling: Quiet operation and smooth low-end throttle control are key.
* Primary Propulsion: Prioritize reliability, power, and fuel capacity.
* Backup Power: Lightweight portability and reliability are paramount.

Our Top Picks: The Best Small Outboard Motors Reviewed

We’ve analyzed user feedback, technical specifications, and real-world performance to bring you this curated list of the best small outboard motors on the market.

1. Honda BF2.3 – The Most Reliable & Fuel-Efficient

Quick Specs: 2.3 HP | 29 lbs | 15″ Shaft | 4-Stroke
The Verdict: The ultimate choice for the boater who values bulletproof reliability above all else. Ideal for heavy use and those who plan to keep their motor for decades.
Pros:
- Legendary Honda reliability and build quality
- Incredibly fuel-efficient
- Smooth and quiet operation
- 5-year warranty (industry-leading)
Cons:
- One of the heaviest in its class
- Higher initial cost
Expert Insight: “Honda’s overhead cam design isn’t just for cars; it provides exceptional fuel economy and smooth, low-end torque that’s perfect for pushing heavier inflatables where other 2.5hp motors might struggle.”

2. Suzuki DF2.5 – The Lightest 4-Stroke

Quick Specs: 2.5 HP | 27 lbs | 15″ Shaft | 4-Stroke
The Verdict: The king of portability. If you frequently lift your motor on and off the transom, this is your best bet.
Pros:
- Extremely lightweight for a 4-stroke
- Compact and easy to store
- Smooth and reliable performance
Cons:
- Less power than some competitors
Expert Insight: “At only 27 lbs, the DF2.5 is a game-changer for sailors or anyone with physical limitations. Its lean-burn carburetor technology is a clever solution for clean and efficient running.”

3. Tohatsu MFS 2.5 / 3.5 – The Best Value & Electric Start Option

Quick Specs: 2.5/3.5/4 HP | 31-41 lbs | 15″/20″ Shaft | 4-Stroke
The Verdict: The smartest buy for the budget-conscious boater who doesn’t want to compromise on quality or features.
Pros:
- Exceptional value for money
- Available with optional electric start (a rarity in this class)
- Reliable and proven design
Cons:
- Can be slightly noisier than Honda or Yamaha
Expert Insight: “Tohatsu is the world’s largest outboard manufacturer and an OEM for other major brands. You’re often getting the same core engineering as more expensive models, making this the most intelligent purchase for practical boaters.”

4. Yamaha F2.5 – The Quiet & Smooth Performer

Quick Specs: 2.5 HP | 30 lbs | 15″ Shaft | 4-Stroke
The Verdict: Yamaha’s refinement shines through in this exceptionally smooth and quiet motor, perfect for trolling and peaceful cruising.
Pros:
- Unbelievably quiet and vibration-free
- Yamaha’s renowned reliability
- Excellent throttle control
Cons:
- Premium price point

5. Mercury 3.5HP (2-Stroke) – The Lightweight Powerhouse

Quick Specs: 3.5 HP | 24 lbs | 15″ Shaft | 2-Stroke
The Verdict: For those in regions where 2-strokes are still legal, this motor offers a phenomenal power-to-weight ratio that 4-strokes can’t match.
Pros:
- Incredible power for its minimal weight
- Simple, durable design
- Can be stored in any orientation
Cons:
- Requires gas/oil mix
- Louder and more polluting than 4-strokes
Expert Insight: “This motor is the go-to for portability where raw, lightweight power is the top priority, such as on a lightweight dinghy or as an emergency backup for a daysailer.”

6. Newport Vessels NV-Series 3.6HP (Sailpro) – The Best for Sailors

Quick Specs: 3.6 HP | 41 lbs | 24″ Extra-Long Shaft | 4-Stroke
The Verdict: Specifically designed for the sailing community, with features that directly address their unique needs.
Pros:
- Dedicated extra-long shaft for sailboat transoms
- High-amp alternator for charging batteries
- Good value
Cons:
- Heavier than some competitors

7. ePropulsion Spirit 1.0 Plus – The Best Electric Outboard

Quick Specs: Equivalent to 3 HP | 20 lbs (motor) + 20 lbs (battery) | 4 Shaft Lengths | Electric
The Verdict: The pinnacle of electric outboard technology, offering a silent, fume-free, and effortless boating experience.
Pros:
- Virtually silent and zero emissions
- Extremely easy to use with digital controls
- Lightweight motor head
Cons:
- Limited runtime dependent on battery
- High initial investment

Expert Tips: Getting the Most from Your Small Outboard

A little knowledge goes a long way in extending the life and performance of your motor.

Break-In Procedures Demystified

A proper break-in is non-negotiable for long-term engine health. For a new 4-stroke:
1. Use the manufacturer’s recommended break-in oil.
2. Run the engine for the first hour at varying throttle settings, but avoid full throttle for extended periods.
3. Do not let the engine run at a constant speed for the first few hours.
4. After the first 5-10 hours, change the gear oil to remove any initial metal shavings.

Off-Season Storage: A Checklist

Follow these steps to ensure your motor starts easily next season:
* Stabilize Fuel: Add a fuel stabilizer to a full tank and run the engine for 5 minutes to circulate it through the carburetor.
* Fog the Engine: With the engine running, spray fogging oil into the air intake until the engine stalls. This coats internal components and prevents rust.
* Drain Cooling System: Run the engine in a tank or with flush muffs to ensure all seawater is expelled.
* Change Gear Oil: Replace the lower unit oil to check for water contamination and protect the gears.
* Store Properly: Store the motor upright in a cool, dry place.

Real-World Example: Choosing a Motor for a 10ft Dinghy

Let’s apply this knowledge. For a 10ft RIB with two adults and gear (approx. 400-500 lbs total), we’d prioritize the 3.5hp-4hp range.
* The Value Pick: The Tohatsu 3.5 offers the best balance of power and price.
* The Refined Pick: The Yamaha F4 offers sublime smoothness and quiet operation.
* The Portable Pick: If weight is a major concern, the Suzuki DF2.5 will still plane a light dinghy, but the 3.5hp models will provide more confident performance in currents or with a heavier load.

Frequently Asked Questions (FAQ)

Q: What is the most reliable small outboard motor brand?
A: While Honda is renowned for its bulletproof reliability, brands like Yamaha, Suzuki, and Tohatsu also have exceptional, proven track records. The key to longevity with any brand is consistent, proper maintenance.

Q: How much horsepower do I need for my dinghy?
A: A reliable general rule is 1-2 HP per 100 lbs of total loaded weight (boat + passengers + gear). For a 400 lb total load, a 4-6 HP motor is ideal for good planing performance.

Q: Can I use a 4-stroke outboard on a sailboat?
A: Yes, absolutely. Many sailors prefer 4-strokes for their quiet operation and fuel efficiency. The critical factor is selecting the correct long shaft (20″) or extra-long shaft (24″) to ensure the prop is fully submerged on a sailboat’s high transom.

Q: What’s the difference between a 2.5hp and a 3.5hp motor?
A: The 1hp difference translates to significantly more thrust and better performance, especially in currents, with heavier loads, or on larger dinghies. For minimal weight and cost increase, the extra power is often worth it.

Q: Are small outboard motors easy to work on?
A: Generally, yes. Basic maintenance tasks like changing spark plugs, water pump impellers, and lower unit oil are very DIY-friendly. This accessibility is a core part of their design, demonstrating the manufacturer’s Expertise in creating user-serviceable products.

Conclusion & Final Recommendation

Choosing the best small outboard motor is a personal decision that hinges on your specific balance of power, weight, and budget. There is no single “winner,” but a perfect match for your boating lifestyle.
* For the ultra-reliable workhorse, choose the Honda BF2.3.
* For the lightest and most portable 4-stroke, the Suzuki DF2.5 is unmatched.
* For the best value and electric start convenience, the Tohatsu MFS 2.5/3.5 is the smartest buy.

Ready to find your perfect match? Explore our detailed guides and specifications for each model on our Outboard Motor Comparison page to make an informed decision.

Still have questions about your specific boat setup? Contact our team of marine experts for personalized, no-pressure advice.

A reliable small outboard isn’t just a piece of equipment; it’s the key to unlocking countless days of adventure and tranquility on the water. Invest wisely, and it will reward you for years to come.