Mercury 25hp EFI (3-Cyl 500cc) vs Tohatsu MFS25 EFI (3-Cyl)
25hp EFI (3-Cyl 500cc)
MFS25 EFI (3-Cyl)
| Spec | Mercury 25hp EFI (3-Cyl 500cc) | Tohatsu MFS25 EFI (3-Cyl) |
|---|---|---|
| Power & Performance | ||
| Horsepower | 25 HP | 25 HP |
| Displacement | 500 cc | 500 cc |
| Configuration | 3 Cyl / Inline | 3 Cyl / Inline |
| Weights & Dimensions | ||
| Dry Weight | 60 kg (132 lbs) | 58 kg (128 lbs) ← |
| Mechanical & Electrical | ||
| Gear Ratio | 2.17:1 | 2.17:1 |
| Alternator | 210 W | 210 W |
| Fuel Delivery | EFI | EFI |
| Maintenance | ||
| Spark Plug | NGK DCPR6E | NGK DCPR6E |
| Engine Oil | 25W-40 FC-W | 10W-30 FC-W |
Technical Comparison Analysis
Power & Displacement
Comparing the Mercury 25hp EFI (3-Cyl 500cc) and Tohatsu MFS25 EFI (3-Cyl) shows a displacement difference of 0cc. The Tohatsu features a larger 500cc block, which typically provides superior low-end torque and better hole-shot performance when pushing heavy loads or reaching planning speeds.
Weight & Rigging
In terms of transom weight, the Tohatsu is the lighter option at 58kg, offering a weight saving of 2kg over its competitor. This weight reduction is critical for smaller hulls or boats with limited transom capacity where every kilogram affects the center of gravity and drainage efficiency.
Electrical & Features
For boats equipped with modern electronics, sonar, and shallow-water anchors, the Tohatsu offers the best charging performance with a 210W alternator. Choosing the right power-to-weight profile between these two 4-stroke engines depends heavily on your specific boat's displacement and daily power requirements.