Shopping for a reliable, mid-range outboard for your fishing boat, pontoon, or bay boat? The Tohatsu 115 and Mercury 115 FourStroke are two of the most trusted options in the 115hp class. Both deliver strong performance, modern technology, and a reputation for lasting value. But which is the best choice for your boating needs? Here’s a detailed, side-by-side review of Tohatsu 115 vs Mercury 115 so you can make an informed decision.
Quick Picks
- Best Overall: Mercury 115 FourStroke – Smooth, quiet, and fuel-efficient with a vast dealer network and top resale value.
- Best Value: Tohatsu MFS115A – Lighter weight, rugged simplicity, and a great price for reliable power.
- Best Tech: Mercury 115 Pro XS – For anglers wanting the fastest hole shot, digital controls, and the most advanced features.
Buyer’s Guide
Consider these important factors when choosing your 115hp outboard:
- Performance: Both Tohatsu and Mercury 115s deliver strong acceleration, good top-end speed, and efficient cruising. Mercury’s 115 Pro XS offers more punch for performance-oriented anglers.
- Weight: The Tohatsu MFS115A is among the lightest in its class, making it ideal for smaller or weight-sensitive hulls. Mercury’s standard 115 is slightly heavier, but still competitive.
- Fuel Efficiency: Both use advanced EFI (Electronic Fuel Injection) for great fuel economy. Mercury’s FourStroke is known for especially low fuel burn at cruise.
- Noise & Vibration: Mercury 115 is one of the quietest mid-range outboards available. Tohatsu is quiet too, but Mercury typically has the edge for noise reduction.
- Technology & Features: Mercury offers digital throttle & shift (on some models), SmartCraft digital gauges, and a broader selection of options. Tohatsu keeps it simple, durable, and easy to maintain.
- Dealer Support: Mercury boasts a massive dealer/service network for easy access to parts and support. Tohatsu’s network is growing but not as extensive in all areas.
- Price & Warranty: Tohatsu is typically more affordable for similar specs. Mercury usually carries a higher resale value and longer track record.
Detailed Product Reviews
1. Mercury 115 FourStroke
Who it’s for: Boaters who want a modern, fuel-efficient engine with quiet operation and easy access to service—perfect for pontoons, runabouts, and multi-species fishing boats.
- Key Benefits:
- One of the quietest and smoothest 115hp outboards on the water.
- Strong midrange torque and great fuel efficiency for long days out.
- Advanced corrosion protection for fresh and saltwater use.
- Broad dealer network and SmartCraft compatibility for tech upgrades.
- Pros:
- Resale value stays high year after year.
- Easy to find service and parts almost anywhere.
- Modern look and many configuration options (Command Thrust, Pro XS, etc.).
- Cons:
- Heavier than some competitors.
- Base price is higher than Tohatsu’s 115hp.
Final Verdict: The Mercury 115 FourStroke is a versatile, top-rated choice for anyone seeking reliable mid-range power with the best support network. Check Mercury 115 pricing
2. Mercury 115 Pro XS
Who it’s for: Anglers and performance boaters wanting more punch, quicker planing, and top speed for bass boats and light bay boats.
- Key Benefits:
- Higher RPM range and advanced tuning for maximum acceleration and top-end.
- Available with digital controls for effortless shifting and throttle response.
- Built for durability in demanding fishing environments.
- Pros:
- Fastest hole shot in the class.
- More tech features than standard 115s.
- Cons:
- Higher price tag.
- May be more performance than casual boaters need.
Final Verdict: For the serious angler or anyone chasing top speed, the Pro XS is the gold standard at 115hp. See Mercury 115 Pro XS offers
3. Tohatsu MFS115A
Who it’s for: Boaters wanting a lightweight, reliable 115hp that’s easy to service and ideal for smaller hulls or weight-sensitive rigs.
- Key Benefits:
- Lightest weight in the 115hp four-stroke class (approx. 377 lbs).
- EFI for smooth, reliable power and fuel savings.
- Simple design for DIY-friendly service and upkeep.
- Very competitive price—especially for budget builds or older boat repowers.
- Pros:
- Great for small bay boats, inflatables, or shallow-running hulls.
- Reputation for rugged reliability worldwide.
- Low maintenance costs over the long term.
- Cons:
- Fewer tech features and digital options compared to Mercury.
- Dealer/service network not as broad as Mercury’s.
Final Verdict: The Tohatsu MFS115A is a top pick for value, simplicity, and light weight—perfect for budget-minded boaters and those who want to keep things easy. See MFS115A pricing
Comparison Table
| Name | Key Features | Specs / Weight | Price Link |
|---|---|---|---|
| Mercury 115 FourStroke | Quiet, efficient, tech-ready | 115hp, EFI, ~382 lbs | Check Mercury 115 pricing |
| Mercury 115 Pro XS | Performance, digital, top speed | 115hp, EFI, ~360 lbs | See Mercury 115 Pro XS offers |
| Tohatsu MFS115A | Lightweight, value, simple | 115hp, EFI, ~377 lbs | See MFS115A pricing |
FAQ Section
- Q: Which is lighter, Tohatsu 115 or Mercury 115?
A: Tohatsu MFS115A is one of the lightest 115hp four-strokes (about 377 lbs), while Mercury 115 FourStroke is a bit heavier (around 382 lbs). The Mercury Pro XS is even lighter due to some performance engineering. - Q: Which is quieter?
A: Mercury 115 FourStroke is generally regarded as one of the quietest in class. Tohatsu is also quiet but Mercury has the edge for low-noise operation. - Q: Which is more fuel-efficient?
A: Both offer excellent fuel economy with EFI. Mercury’s FourStroke is known for very low fuel burn at cruise speeds. - Q: What about service and parts?
A: Mercury’s dealer and service network is the largest in North America. Tohatsu’s network is solid and growing, but always check local support. - Q: Which is the better value?
A: Tohatsu is typically more affordable up front, with rugged simplicity and low ownership costs. Mercury offers more features, tech, and higher resale value.
Conclusion
Both the Tohatsu 115 and Mercury 115 are excellent choices for mid-range power—reliable, efficient, and built to last. Mercury stands out for quiet operation, modern tech, and unbeatable dealer support, making it ideal for boaters who want maximum peace of mind and features. Tohatsu is the leader for value and light weight, perfect for smaller hulls or budget builds. Choose based on your priorities—whether it’s price, weight, tech, or support—and you’ll enjoy strong, dependable power for years on the water.