The 2025 Mercury 25hp FourStroke outboard motor offers a blend of power, efficiency, and reliability, making it a popular choice for small to medium-sized boats. Available in various configurations, including tiller and remote steering options, this engine is designed to meet diverse boating needs.

Engine Specifications

• Power: 25 hp (≈18.6 kW) from a 526 cc inline‑3 SOHC engine (2 valves per cylinder) 

• Full‑throttle RPM: 5,000–6,000 rpm 

• Weight: Approximately 60–71 kg (132–157 lb), depending on model/options

• Alternator: 15 A (186 W) high‑output unit 

• Fuel system: Battery‑free Electronic Fuel Injection (EFI), suitable for 87 octane petrol with up to 10% ethanol

• Starting: Manual and/or electric (turn‑key), depending on version 

• Shaft options: 15″ or 20″ lengths

• Gear ratio: ~1.92–2.17:1 depending on model

• Trim: Manual or Power Trim & Tilt options 

• Weight rating: CARB 3‑star emissions

Specification