When searching for a Tohatsu 40hp outboard, you’ll notice both 2-cylinder and 3-cylinder models available, especially on the used market. Each has its own unique strengths and ideal applications. Which one is best for your boat? Here’s a practical, side-by-side comparison of the Tohatsu 40hp 2-cylinder vs 3-cylinder so you can make an informed choice for fishing, work, or family fun.
Quick Picks
- Best for Smoothness & Modern Features: Tohatsu 40hp 3-Cylinder (MFS40A/MD40/MD40C) – Quieter, smoother, and more advanced.
- Best for Simplicity & Durability: Tohatsu 40hp 2-Cylinder (older MD40 models) – Rugged, lighter, and easy to maintain.
- Best Budget Option: Tohatsu 40hp 2-Cylinder – Less expensive on the used market, easy for DIY repairs.
Buyer’s Guide
Consider these factors when deciding between 2-cylinder and 3-cylinder Tohatsu 40hp outboards:
- Smoothness & Vibration:
- 3-Cylinder: Runs smoother with less vibration, especially at idle and mid-range. Noticeably quieter and more refined under power.
- 2-Cylinder: Has more vibration and a classic “thumping” 2-stroke sound. Less smooth at idle, but perfectly workable for fishing or work boats.
- Weight:
- 2-cylinder models are generally lighter by about 20–30 lbs, making them easier to mount and ideal for lighter hulls.
- 3-cylinder models are a bit heavier but offer better balance and quietness.
- Power & Torque:
- Both make 40hp, but the 3-cylinder delivers power more smoothly, especially when loaded.
- 2-cylinder has solid low-end torque but may bog down under heavy load compared to the 3-cylinder.
- Fuel Economy: 3-cylinder models tend to be more efficient at cruising speed and may sip a little less fuel overall.
- Maintenance:
- 2-cylinder models are simpler to maintain, with fewer parts and easier carburetor work. Good for remote use or DIY repairs.
- 3-cylinder is still user-friendly but a bit more complex—better for those wanting smoother, quieter performance.
- Age & Features:
- Most 2-cylinder 40hp Tohatsus are older, carbureted 2-strokes. 3-cylinder options can be both older (2-stroke) or newer 4-stroke EFI models (like MFS40A).
- 3-cylinder 4-strokes offer electronic fuel injection, better emissions, and modern controls.
- Price: 2-cylinder models are cheaper on the used market. 3-cylinder engines, especially EFI models, cost more but offer better refinement and features.
Detailed Product Reviews
1. Tohatsu 40hp 2-Cylinder 2-Stroke (MD40B, etc.)
Who it’s for: Boaters seeking a lightweight, simple engine for smaller boats, remote use, or budget builds.
- Key Benefits:
- Lighter weight for easier handling and mounting.
- Simple, rugged design—less to go wrong, great for DIY repairs.
- Reliable carbureted 2-stroke power, proven for decades.
- Pros:
- Lower price on the used market.
- Easy to maintain in the field.
- Good for jon boats, skiffs, and utility hulls.
- Cons:
- More vibration and noise.
- Fewer features—usually tiller only, basic controls.
Final Verdict: A solid pick for simple boating, tight budgets, or rough-and-ready use. See used 2-cylinder 40hp listings
2. Tohatsu 40hp 3-Cylinder 2-Stroke or 4-Stroke (MD40C, MFS40A, etc.)
Who it’s for: Boaters who want smoother running, better fuel efficiency, and more features—ideal for fishing families, guides, or modern repowers.
- Key Benefits:
- Much smoother at all RPMs—less hand/foot fatigue over a long day.
- Quieter and more refined, especially at idle and cruise.
- More modern features—electronic fuel injection, remote steering, digital gauges (on 4-stroke EFI).
- Better fuel economy, especially on 4-stroke EFI models.
- Pros:
- Ideal for newer boats, families, and those who appreciate a smooth ride.
- Options for advanced controls and digital features.
- Cons:
- Heavier than the 2-cylinder version.
- Costs more up front and to repair.
Final Verdict: Choose the 3-cylinder for smoother, quieter power, or for modern features and fuel savings—especially for frequent use or family boats. See used 3-cylinder 40hp listings
Comparison Table
| Name | Key Features | Specs / Weight | Price Link |
|---|---|---|---|
| Tohatsu 40hp 2-Cylinder | Lighter, simple, rugged | 2-cyl, carb, ~145–155 lbs (varies) | See used 2-cyl 40hp |
| Tohatsu 40hp 3-Cylinder | Smoother, quieter, EFI (on 4-stroke) | 3-cyl, 2S or EFI 4S, ~165–210 lbs | See used 3-cyl 40hp |
FAQ Section
- Q: Which is smoother and quieter?
A: The 3-cylinder is noticeably smoother and quieter, especially at idle and cruising speeds. - Q: Which is lighter?
A: The 2-cylinder 40hp is about 20–30 lbs lighter, making it easier to lift, mount, or use on smaller boats. - Q: Which is better for DIY maintenance?
A: The 2-cylinder is simpler, with fewer parts and easy carburetor access—great for at-home repairs. - Q: Which is more fuel efficient?
A: The 3-cylinder, especially in EFI 4-stroke form, is more fuel efficient at cruise and may cost less to run over long trips. - Q: Which is cheaper?
A: 2-cylinder 40hp models are usually less expensive on the used market.
Conclusion
Both the 2-cylinder and 3-cylinder Tohatsu 40hp outboards are known for reliability, but they serve slightly different needs. Choose the 2-cylinder for low cost, light weight, and simple repairs—great for basic fishing or workboats. Pick the 3-cylinder if you want a smoother, quieter ride, better fuel economy, and more modern features—ideal for families or anyone spending lots of time on the water. Either way, you’ll enjoy years of dependable performance.