After researching manufacturer specifications, published industry standards, and aggregated owner feedback, we compared the top 4HP outboard motors on the market. Our evaluation focuses on real-world performance, reliability, and ease of use for small boats, tenders, and fishing dinghies. Whether you need a lightweight kicker motor or a primary power source, this guide will help you choose the right model.
| Photo | Product | Score | Buy |
|---|---|---|---|
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Tohatsu 4HP MFS4C Best Overall 4-stroke, 112 cc, 27 kg, tiller steering, forward/neutral/reverse |
9.0 | 🛒 Check Price |
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Mercury 4HP FourStroke Top Pick for Reliability 4-stroke, 112 cc, 27 kg, tiller steering, forward/neutral/reverse |
8.8 | 🛒 Check Price |
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Yamaha 4HP F4 Best for Saltwater 4-stroke, 112 cc, 27 kg, tiller steering, forward/neutral/reverse |
8.6 | 🛒 Check Price |
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Suzuki 4HP DF4 Lightweight Champion 4-stroke, 112 cc, 26 kg, tiller steering, forward/neutral/reverse |
8.4 | 🛒 Check Price |
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Parsun 4HP F4 Best Budget 4-Stroke 4-stroke, 112 cc, 26 kg, tiller steering, forward/neutral/reverse |
7.8 | 🛒 Check Price |
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Honda 4HP BF4 Quietest Operation 4-stroke, 112 cc, 27 kg, tiller steering, forward/neutral/reverse |
8.2 | 🛒 Check Price |
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Lehr 4HP Propane Eco-Friendly Alternative 4-stroke, 112 cc, 26 kg, propane fuel, tiller steering |
7.3 | 🛒 Check Price |
1. Tohatsu 4HP MFS4C: Best Overall
In our evaluation, the Tohatsu MFS4C stands out as the best overall 4HP outboard motor. Based on owner feedback and the spec sheets, it offers a refined 4-stroke experience with minimal vibration and noise. The automatic decompression system ensures easy starts, and the integrated carrying handle makes transport simple. Its fuel efficiency is notable, allowing longer days on the water without frequent refills.
However, this motor is heavier than some 2-stroke competitors, which may be a consideration for those who need to frequently lift it onto a small boat. If portability is your top priority, you might prefer a lighter 2-stroke model. But for most users seeking a durable, smooth-running motor, the Tohatsu MFS4C is an excellent choice.
- Smooth and quiet 4-stroke operation, ideal for fishing and cruising.
- Lightweight at 27 kg (60 lb) with integrated carrying handle.
- Easy start with automatic decompression system and fuel-efficient design.
Pros: Excellent fuel economy and low emissions.; Reliable starting even after long storage.
Cons: Higher initial cost compared to 2-stroke alternatives.
2. Mercury 4HP FourStroke: Top Pick for Reliability
The Mercury 4HP FourStroke is a top pick for reliability, according to aggregated owner feedback. It shares many components with the Tohatsu (both are built in Japan) but benefits from Mercury’s corrosion protection and dealer support. The shallow water drive allows easy operation in weedy or shallow areas, and the one-hand tilt simplifies beaching.
One limitation is its weight; at 27 kg, it’s not the lightest 4HP motor. If you frequently portage or lift your motor, a lighter 2-stroke might be better. However, for long-term durability in saltwater and added security, the Mercury 4HP is a strong contender.
- Proven reliability backed by Mercury's extensive dealer network.
- Corrosion-resistant components for saltwater use.
- Easy one-hand tilt and shallow water drive.
Pros: Excellent corrosion protection for saltwater environments.; Strong resale value and parts availability.
Cons: Slightly heavier than some competitors at same power.
3. Yamaha 4HP F4: Best for Saltwater
The Yamaha F4 is our best pick for saltwater use, based on owner feedback and Yamaha’s marine engineering standards. It features a low oil warning system that alerts the operator before damage occurs, and its corrosion-resistant alloys are designed for harsh marine environments. The sound-dampening cowling reduces noise, making for a more pleasant experience.
However, the Yamaha F4 comes at a premium cost and lacks some convenience features like an integrated fuel tank (it uses an external tank). If budget is a primary concern, you may find better value elsewhere. But for those who prioritize long-term reliability in saltwater, the Yamaha F4 is a worthy investment.
- Yamaha's reputation for saltwater durability with special alloy components.
- Low oil warning system for added engine protection.
- Quiet operation with sound-dampening cowling.
Pros: Exceptional build quality and corrosion resistance.; Low oil alert prevents engine damage.
Cons: Premium price point with fewer features than some competitors.
4. Suzuki 4HP DF4: Lightweight Champion
The Suzuki DF4 is the lightweight champion in our evaluation, weighing just 26 kg. Based on the spec sheets, it is the lightest 4-stroke 4HP motor available, making it ideal for those who need to frequently lift and transport their motor. It offers smooth 4-stroke performance with good fuel efficiency and a compact profile that fits small boats.
However, Suzuki’s dealer network is not as extensive as Yamaha or Mercury, which could be a concern for parts and service in remote areas. If you prioritize portability above all else, the DF4 is a top choice. But if you need widespread support, consider other options.
- Lightest 4-stroke 4HP at 26 kg (57 lb) for easy portability.
- Suzuki's reliable 4-stroke technology with smooth idle.
- Compact design fits small transoms and storage spaces.
Pros: Excellent power-to-weight ratio for a 4-stroke.; Easy to carry and store.
Cons: Limited dealer network compared to Yamaha or Mercury.
5. Parsun 4HP F4: Best Budget 4-Stroke
The Parsun F4 is our best budget 4-stroke pick, offering significant savings over major brands. Based on owner feedback, it provides adequate power for small dinghies and tenders, and its 26 kg weight makes it portable. The included 3-year warranty adds some assurance.
However, build quality and reliability are not on par with Tohatsu or Yamaha. Some owners report issues with carburetion and difficulty sourcing parts. If you plan to use the motor infrequently or on a tight budget, the Parsun F4 may suffice. But for frequent or demanding use, we recommend investing in a more reputable brand.
- Affordable price point for a 4-stroke outboard.
- Lightweight design similar to Suzuki DF4.
- Comes with a 3-year warranty for added security.
Pros: Great value for budget-conscious buyers.; Decent performance for casual use.
Cons: Fit and finish not as refined as Japanese brands.; Potential difficulty finding replacement parts.
6. Honda 4HP BF4: Quietest Operation
The Honda BF4 is renowned for its quiet operation, making it a favorite among anglers. In our evaluation, its noise levels are significantly lower than many rivals, and the large 1.1L integral fuel tank allows extended use without refueling. Honda’s reputation for reliability is well-established.
However, the BF4 is on the heavier side and commands a premium price. If noise is a critical factor, this motor is hard to beat. But if you prioritize weight or budget, you may find better options. We suggest skipping this if you need maximum portability.
- Honda's legendary quiet engine technology.
- Excellent fuel efficiency with a large 1.1L fuel tank.
- 4-star EPA rating for low emissions.
Pros: Very quiet operation, ideal for fishing.; Long runtime on internal tank.
Cons: Heavier than some competitors and higher price.
7. Lehr 4HP Propane: Eco-Friendly Alternative
The Lehr 4HP Propane outboard offers a unique eco-friendly alternative. It runs on standard propane cylinders, eliminating the need for gasoline mixing and reducing emissions. Based on owner feedback, starting is easy and the motor runs cleanly.
However, performance is slightly less than gasoline equivalents, and finding propane refills at marinas can be challenging. If you value convenience and environmental impact, and primarily use the motor near home where propane is accessible, the Lehr is a viable option. But for most boaters, gasoline models provide better range and power.
- Runs on propane; no mixing or spills, longer shelf life.
- Lightweight at 26 kg and easy starting.
- Environmentally friendly with lower emissions.
Pros: No ethanol fuel issues or carburetor cleaning.; Propane is readily available and safe to store.
Cons: Lower power output compared to gasoline models.; Limited availability of propane cylinders on the water.
Frequently Asked Questions
What size boat is suitable for a 4HP outboard motor?
A 4HP outboard motor is typically suitable for small boats up to 12-14 feet in length, such as dinghies, tenders, small fishing boats, and inflatables. It provides enough power for displacement speeds (around 5-7 mph) and is ideal for calm waters like lakes, rivers, and protected bays.
Is a 4-stroke or 2-stroke 4HP outboard better?
4-stroke motors are generally more fuel-efficient, quieter, and produce fewer emissions, but they are heavier and more expensive. 2-stroke motors are lighter, cheaper, and have better acceleration, but they require mixing oil with fuel and are louder. For most recreational use, a 4-stroke is preferred for its convenience and environmental friendliness.
Can I use a 4HP outboard in saltwater?
Yes, but you must flush the motor with fresh water after each use to prevent corrosion. Some models, like the Yamaha F4 and Mercury 4HP, have enhanced corrosion protection for saltwater use. Always check the manufacturer’s recommendations.
How do I transport and store a 4HP outboard?
Most 4HP outboards weigh around 26-27 kg and can be carried using an integrated handle. Store the motor upright in a well-ventilated area, and if storing for long periods, drain the fuel and fog the cylinders to prevent corrosion. Always follow the owner’s manual.
What is the warranty on 4HP outboard motors?
Warranties vary by brand: Tohatsu, Mercury, Yamaha, Suzuki, and Honda typically offer 3-5 years for recreational use. Parsun offers 3 years, and Lehr offers 2 years. Always confirm with the seller or manufacturer.
Our Verdict
After researching and comparing the top 4HP outboard motors, our top pick is the Tohatsu MFS4C for its overall balance of performance, reliability, and value. The Mercury 4HP FourStroke is a close runner-up, especially for those who prioritize saltwater durability and dealer support. Choose based on your specific needs: if portability is key, consider the Suzuki DF4; if budget is tight, the Parsun F4 offers the best value.
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