2025 Mercury 5HP Outboard — Compact Power, Big Performance
Lightweight, efficient, and built to last. The 2025 Mercury 5HP outboard delivers smooth, reliable power in a portable package. Perfect for small boats, inflatables, and backup applications — easy to start, easy to carry, and surprisingly strong for its size.
5 horsepower, 4-stroke reliability
Lightweight design for effortless transport
Fuel-efficient and ultra-quiet operation
Twist-grip throttle and forward-neutral-reverse gears
Perfect for dinghies, inflatables, and small fishing boats
Compact, dependable Mercury power — ready for the water.
Information
Model: Mercury 5HP FourStroke (2025 model year)
Engine Type: 4-stroke, single-cylinder, OHV Displacement: 123 cc (7.5 cu in) Bore x Stroke: 59 mm x 45 mm Horsepower: 5 HP @ 5,000–6,000 rpm Full Throttle Range: 4,500 – 5,500 rpm Ignition System: CDI (Capacitor Discharge Ignition) Starting System: Manual Steering: Tiller handle with twist-grip throttle Gear Shift: Forward – Neutral – Reverse Gear Ratio: 2.15:1
Cooling System: Water-cooled with thermostat Fuel System: Carbureted Fuel Tank: 1.1 L (internal) or 12 L (external tank with fuel line, depending on model) Fuel Type: Unleaded gasoline (minimum 87 octane)
Lubrication System: Splash lubrication Oil Capacity: 450 ml (15.2 oz)
Alternator (optional): 4.5A / 12V (on certain models)
Trim Positions: 6 manual tilt positions Exhaust System: Through propeller hub