Mercury 25 HP EFI – With models ranging from 30hp to 2.5hp, the Mercury FourStroke Portable are suited to everything from small inflatables to aluminium dinghies and punts. Mercury’s FourStroke Portables are designed with leading edge features for enhanced reliability and performance. Like trouble-free starting thanks to a fast idle and fuel primer system. So every engine in the range runs smoother for longer. We’ve even added noise-reducing cowls, air intake silencers and through prop exhausts for even cleaner and quieter operation.


Consistent Starting

Mercury FourStroke EFI outboards deliver consistent, easy starts, smooth operation, and reliability. The 25 and 30hp models are the industry’s first batteryless EFI outboards.

Peace of Mind

Engine Guardian uses more than 40 sensors to monitor functions of your engine. If the proactive operator-warning system detects a potential problem – such as over- revving, overheating or low oil pressure – Engine Guardian sends out an alert and automatically reduces engine power to prevent damage.


Born To Be Smooth

All portable and mid-range Mercury FourStrokes feature inline designs for inherently smooth operation.

Powerful 3-Cylinder Design

Every 25 and 30hp Mercury Fourstroke utilize a three-cylinder engine design that delivers better inherent balance than the twin cylinder designs used by competitive outboards. Mercury’s three cylinder approach results in a smoother and quieter user experience.


Fun at your Fingertips

Mercury Fourstrokes are designed with a boat load of user-friendly features, such as our multifunction tiller handle. Available on gas assist or power trim models, this tiller handle gives you easy one-handed operation of shifting, stopping, throttle, tilt and starting. More control equals better manoeuvrability.


Superior Corrosion Protection

Mercury FourStrokes deliver powerful saltwater protection by using more Stainless Steel Components, hard anodizing, engineered polymers and exclusive multi-step painting and coating processes. Only Mercury Marine offers a three-year limited corrosion failure warranty.