Engine Information and Specifications

  •  25 EFI

    Engine Details

    Delivers consistent, easy starting, crisp throttle response, increased fuel economy, and outstanding overall performance. Great for aluminum tiller, aluminum console, jon, utility, and fish & ski boats.

    Specifications - 25 EFI

    HP / kW
    • 25 / 18.6
    Engine type
    • Inline 3
    Displacement (CID/CC)
    • 32.1 / 526
    Full throttle RPM
    • 5000-6000
    Fuel induction system
    • 2 valves per cylinder, single overhead cam (SOHC)
    Alternator amp / Watt
    • 15 amp / 186 watt
    Recommended fuel
    • Unleaded 90RON minimum
    Recommended oil
    • Mercury FourStroke Oil 10W-30
    Engine protection operator warning system
    • Low oil pressure
    • Over-rev
    • Overheat
    • Sensor failure
    • Electric (turn-key)
    • Manual
Announcing NEW Mercury 20hp & 15hp outboards

Announcing NEW Mercury 20hp & 15hp outboards

The ultimate boating experience comes standard. Mercury’s newest addition to its lineup of portable FourStroke outboard motors is designed and built to improve every aspect of your time on the water, from starting the engine to changing the oil and everything in between. Watch here

Reliability, Portability and Power with the convenience of Propane

Reliability, Portability and Power with the convenience of Propane

Mercury’s all-new 5hp FourStroke Propane outboard provides more convenience and less hassle. With a large 123cc displacement, it offers best-in-class power by delivering a true 5 horsepower. Sail Power model is designed for sailboats, and features an alternator and more thrust.

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