Mercury F25 EFI Outboard Motor

Mercury F25 EFI – Powerful, efficient and versatile

The Mercury F25 EFI is a powerful and reliable outboard engine that sets new standards with its battery-free electronic fuel injection (EFI), high torque and user-friendly controls. This modern four-stroke engine offers outstanding performance and is ideal for recreational boaters and commercial users.

Why choose the Mercury F25 EFI?

• Powerful & efficient: With 25 hp and a high-torque 3-cylinder engine, the Mercury F25 EFI delivers impressive acceleration – even at low revs.
• Battery-free EFI system: Reliable starting, optimized fuel consumption and direct throttle response ensure that you can start the engine even without battery support.
• Practical controls: The innovative, multifunctional tiller handle allows one-handed operation for shifting, throttling, tilting and precise steering – ideal for everyday use.
• PowerTrim & tilt system: The electric trim and tilt assistance ensures optimal engine positioning and improves overall performance.
• Safety in the event of battery failure: Should the battery fail, the integrated manual starter (M) still allows for reliable engine starting.
• Compact design & low weight: Weighing just 71 kg, the Mercury F25 EFI is easy to transport and install – perfect for small boats and tight storage areas.
• Powerful alternator: A 15A (186W) alternator ensures that all onboard electronic systems are always reliably supplied with power.

Technical highlights of the Mercury F25 EFI

• Power: 18.4 kW (25 hp) at 5,000–6,000 rpm
• Displacement: 526 cm³
• Cylinders: 3-cylinder, SOHC technology
• Fuel injection: Electronic EFI system
• Gearbox: Forward (F) – Neutral (N) – Reverse (R)
• Starting system: Electric (E) or manual start (M)
• Gear ratio: 1.92:1 for powerful propulsion
• Shaft length: Long shaft (508 mm)
• Weight: approx. 71 kg (depending on the version)
• Trim & tilt system: Manual or PowerTrim (PT)
• Fuel tank: External 25-liter tank for long trips
• Ignition: CDI with electronic ignition timing
• Alternator: 15A (186W) for powering onboard electronics
• Engine protection system: Warns of overheating, low oil pressure and sensor faults

Certified quality & service

Before delivery, every Mercury F25 EFI undergoes a comprehensive Pre-Delivery Inspection (PDI) in our test tanks – a free inspection that is also required by the manufacturers for warranty claims. This inspection ensures that you receive a fully functional engine. It is shipped in original protective packaging, including a sufficient supply of new engine oil for the initial fill.

Your Mercury partner since 1978 – Marina Wassersport
As an official Mercury dealer and service partner in Munich, we offer you personal advice, professional support and first-class maintenance for your Mercury outboard engine. Trust our many years of expertise to help you find the perfect engine for your boat!

Discover the Mercury F25 EFI now and get started on the water!