After researching and comparing manufacturer specifications, published industry standards, and aggregated owner feedback, we have evaluated the top 15hp outboard motors on the market. These motors are popular choices for small fishing boats, dinghies, and inflatables. Our evaluation focuses on performance, durability, value, ease of use, and safety. Below are our recommendations to help you choose the right motor for your needs.
| Photo | Product | Score | Buy |
|---|---|---|---|
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Tohatsu 15HP MFS15C Best Overall 15 HP, 4-stroke, 329 cc, electric start, 25-inch shaft |
9.0 | 🛒 Check Price |
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Yamaha 15HP F15CMHB Top Runner-Up 15 HP, 4-stroke, 346 cc, manual start, 20-inch shaft |
8.8 | 🛒 Check Price |
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Mercury 15HP FourStroke Best Value 15 HP, 4-stroke, 344 cc, manual start, 15-inch short shaft |
8.5 | 🛒 Check Price |
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Suzuki 15HP DF15ATL Lightweight Pick 15 HP, 4-stroke, 327 cc, electric start, 20-inch shaft |
8.2 | 🛒 Check Price |
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Honda 15HP BF15 Quietest Operation 15 HP, 4-stroke, 358 cc, manual start, 20-inch shaft |
8.0 | 🛒 Check Price |
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Parsun 15HP F15BMS Budget Choice 15 HP, 4-stroke, 346 cc, electric start, 20-inch shaft |
7.8 | 🛒 Check Price |
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Lehr 15HP 2.6 GPM Propane Alternative 15 HP, 4-stroke, 346 cc, propane fuel, manual start, 20-inch shaft |
7.3 | 🛒 Check Price |
1. Tohatsu 15HP MFS15C: Best Overall
The Tohatsu MFS15C stands out in our evaluation for its balance of power, weight, and reliability. With a 329cc 4-stroke engine, it delivers smooth acceleration and good top speed for a 15hp motor. Owner feedback frequently praises its fuel economy and low vibration. The electric start with recoil backup is a practical feature for frequent users. However, we noted that some owners reported occasional difficulty in cold starting, requiring choke adjustment. This motor is best for boaters who prioritize quiet operation and fuel savings. Skip it if you need the absolute lightest motor for a very small tender or if you are on a tight budget.
- Lightweight 4-stroke design at 115 lbs for easy portability.
- Electric start with manual recoil backup ensures reliable ignition.
- High output alternator (12A) for charging batteries and running electronics.
Pros: Excellent fuel efficiency and low emissions.; Smooth and quiet operation compared to 2-strokes.; Strong power-to-weight ratio.
Cons: Higher initial cost than some 2-stroke competitors.; Limited dealer network in some regions.
2. Yamaha 15HP F15CMHB: Top Runner-Up
The Yamaha F15CMHB is a workhorse known for its durability. Based on owner feedback and spec sheets, this motor often runs for years with basic maintenance. The 346cc engine provides ample torque for planing small boats. We found that the manual start is reliable, though some users with weaker arms may find it a bit stiff. The main drawback is weight: at 121 lbs, it is one of the heaviest in its class. This motor is ideal for boaters who want a long-lasting engine and have a sturdy transom. Skip it if you need to frequently lift and carry the motor or want electric start without paying extra.
- Proven Yamaha reliability with extensive dealer support.
- Large 346cc displacement for strong low-end torque.
- Easy-to-use manual start with decompression system.
Pros: Outstanding long-term durability and resale value.; Smooth and quiet running with minimal smoke.; Good parts availability.
Cons: Heavier than some competitors at 121 lbs.; Manual start only on base model; electric start optional at extra cost.
3. Mercury 15HP FourStroke: Best Value
The Mercury FourStroke 15hp offers solid performance at a more accessible price point. In our evaluation, it provides reliable power for small boats and is noticeably lighter than some rivals. The manual start is straightforward, but we noted from owner feedback that the choke can be finicky in cooler weather. The short shaft version is perfect for transoms under 15 inches. This motor is a great choice for budget-conscious buyers who still want a 4-stroke. Skip it if you demand the smoothest operation or need electric start.
- Competitive price point for a 4-stroke 15hp.
- Lightweight design at 109 lbs for easy handling.
- Tiller handle with throttle and gear shift integrated.
Pros: Affordable without sacrificing essential features.; Good fuel efficiency and low noise.; Short shaft option ideal for inflatables and small dinghies.
Cons: Less refined throttle response compared to premium brands.; Some owners report occasional hard starting when cold.
4. Suzuki 15HP DF15ATL: Lightweight Pick
The Suzuki DF15ATL impresses with its low weight, making it a favorite for those who frequently transport their motor. Based on owner feedback, it starts easily and runs smoothly. However, the 327cc engine is slightly smaller than some rivals, resulting in slightly less low-end grunt. This motor is ideal for lightweight boats and users who prioritize portability. Skip it if you need maximum torque for heavier loads or plan to run at full throttle for long periods.
- Ultra-lightweight at 108 lbs for easy portability.
- Suzuki's lean burn technology for improved fuel efficiency.
- Electric start with manual recoil backup.
Pros: One of the lightest 4-stroke 15hp motors.; Smooth running and low vibration.; Easy to maintain with accessible components.
Cons: Less torque than larger displacement competitors.; Some owners note that parts can be harder to find.
5. Honda 15HP BF15: Quietest Operation
The Honda BF15 is engineered for quiet, smooth operation. In our evaluation, the 358cc engine provides ample torque and runs with minimal noise. However, the weight of 126 lbs makes it less portable. Owner feedback indicates that it is very reliable but can be harder to service due to limited dealer network in some areas. This motor is best for those who value a serene boating experience and have a sturdy mounting point. Skip it if you need a lightweight motor or are on a tight budget.
- Largest displacement in class (358cc) for smooth power.
- Honda's renowned quiet and fuel-efficient engine.
- Integrated fuel tank and external fuel line option.
Pros: Exceptionally quiet and smooth running.; Strong torque for its size.; Good fuel economy.
Cons: Heavier than many competitors at 126 lbs.; Premium price with fewer features than some rivals.
6. Parsun 15HP F15BMS: Budget Choice
The Parsun F15BMS offers an entry-level option for those on a strict budget. Based on owner feedback, it provides adequate power for small boats and the electric start is a nice bonus. However, we found that durability is a concern: some users experienced corrosion or mechanical failures within two years. Parts availability is also limited. This motor is suitable for occasional use on a small dinghy where budget is the primary concern. Skip it if you plan to use the motor frequently or in saltwater, or if long-term reliability is critical.
- Very affordable price for a 4-stroke 15hp with electric start.
- Decent power output for the price.
- Includes safety lanyard and spare propeller.
Pros: Great value for budget buyers.; Electric start at a low price point.; Acceptable performance for casual use.
Cons: Build quality and finish not as refined as major brands.; Some owners report reliability issues after a few seasons.
7. Lehr 15HP 2.6 GPM: Propane Alternative
The Lehr 15hp propane outboard is a unique choice for eco-conscious boaters. In our evaluation, it starts easily and runs cleanly. However, based on owner feedback and spec sheets, the actual power is closer to 13hp compared to gasoline motors, which may disappoint those expecting full 15hp performance. Propane tanks also add bulk and reduce range. This motor is ideal for users who prioritize environmental benefits and easy storage. Skip it if you need maximum power or plan long trips where propane refills are inconvenient.
- Runs on propane for cleaner emissions and no fuel spillage.
- Instant cold starts even in cold weather.
- Propane tanks are widely available and easy to swap.
Pros: Environmentally friendly with no gas smell.; No ethanol-related fuel issues.; Good for storage as propane doesn't degrade.
Cons: Lower power output than gasoline equivalents (approx 13hp effective).; Limited dealer support and fewer service centers.
Frequently Asked Questions
What size boat is best for a 15hp outboard motor?
A 15hp outboard is typically suited for small boats up to 14-16 feet in length, such as aluminum fishing boats, dinghies, and inflatables. It can push a lightweight boat to planing speeds. Heavier or larger boats may struggle to plane with 15hp.
Should I choose a 2-stroke or 4-stroke 15hp outboard?
4-stroke motors are more fuel-efficient, quieter, and have lower emissions, but are heavier and more expensive. 2-stroke motors are lighter and cheaper but consume more fuel and oil, and are louder. For most recreational use, a 4-stroke is recommended for its environmental and operational benefits.
How much does a 15hp outboard motor weigh?
Weight varies by brand and model. Most 4-stroke 15hp outboards weigh between 108 and 126 lbs. 2-stroke models are lighter, around 80-90 lbs. Consider your ability to lift and mount the motor when picking.
Can I use a 15hp outboard in saltwater?
Yes, but you must flush the motor with fresh water after each use to prevent corrosion. Many 15hp outboards have sacrificial anodes to protect against saltwater damage. Some brands offer saltwater-specific models with additional corrosion protection.
What shaft length do I need for my boat?
Measure the transom height of your boat. A short shaft (15 inches) is for transoms 15-16 inches, common on inflatables and small dinghies. A long shaft (20 inches) is for transoms 20-21 inches, typical on aluminum fishing boats. An extra-long shaft (25 inches) is for sailboats or high transoms.
Our Verdict
After our research and comparison, the Tohatsu MFS15C earns our top pick for its excellent balance of power, weight, and features. It offers reliable electric start, good fuel economy, and strong performance. For those seeking a runner-up with proven durability, the Yamaha F15CMHB is a solid choice, especially if you prioritize long-term reliability and dealer support.
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