Yamaha 250hp V6 HPDI vs Mercury 225 OptiMax (2-Stroke)
250hp V6 HPDI
225 OptiMax (2-Stroke)
| Spec | Yamaha 250hp V6 HPDI | Mercury 225 OptiMax (2-Stroke) |
|---|---|---|
| Power & Performance | ||
| Horsepower | 250 HP | 225 HP |
| Displacement | 3344 cc ← | 3032 cc |
| Configuration | 6 Cyl / V6 76° | 6 Cyl / V6 60° |
| Weights & Dimensions | ||
| Dry Weight | 244 kg (538 lbs) | 225 kg (496 lbs) ← |
| Mechanical & Electrical | ||
| Gear Ratio | 1.75:1 | 1.75:1 |
| Alternator | 630 W | 756 W ← |
| Fuel Delivery | HPDI (High Pressure Direct Injection) | DFI (Direct Injection) |
| Maintenance | ||
| Spark Plug | NGK BKR7HSU (Surface Gap) | NGK IZFR6J |
| Engine Oil | Yamalube 2-M | OptiMax / DFI Synthetic Blend |
Technical Comparison Analysis
Power & Displacement
Comparing the Yamaha 250hp V6 HPDI and Mercury 225 OptiMax (2-Stroke) shows a displacement difference of 312cc. The Yamaha features a larger 3344cc 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 Mercury is the lighter option at 225kg, offering a weight saving of 19kg 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 Mercury offers the best charging performance with a 756W alternator. Choosing the right power-to-weight profile between these two 2-stroke engines depends heavily on your specific boat's displacement and daily power requirements.