Efficiency Without Compromise

Quick-revving double-overhead camshaft design and deep-breathing intake deliver thrilling and satisfying performance. Great for aluminum console, deck, inflatable rigid hull, inshore fishing, offshore fishing, and runabout boats and tritoons.

Take your time on the water to a whole new level. Mercury FourStroke engines deliver unsurpassed power and performance in an efficient, reliable package. Tougher, smaller and lighter than any other four-stroke on the water, built to go the distance on a wide variety of boats and guaranteed to get you the most out of every adventure.

Mercury 250 HP Fourstroke V6 Spevificatons

HP / kW

250 / 186

Engine type


Displacement (CID/CC)

279 CID

Displacement (L)


Cylinder Configuration

V8 [64 degree] with Dual Overhead Cam [DOHC] and 32-valves

Full throttle RPM


Air induction

Performance-Tuned Long-Runner Intake Manifold

Fuel induction system

Electronic Fuel Injection (EFI) Computer Controlled with Advanced Range Optimization

Alternator amp / Watt

85-amp (1071 Watt) with Idle Charge

Recommended fuel

Unleaded Regular 87 Octane Minimum (R+M/2) or 90 RON 10% Ethanol Maximum

Recommended oil

NMMA Certified FCW SAE 10W-30

Engine protection operator warning system

SmartCraft Engine Guardian

Compatible with SmartCraft digital technology



Electric Start with SmartStart Protection


Remote Mechanical or Digital Throttle & Shift (DTS)


Hydraulic (standard)

Power (optional)

Shaft length

20" / 508 mm

25" / 635 mm

30" / 762 mm

Gearcase ratio


Dry weight *Lightest model available

527 lbs / 239 kgs

CARB star rating


Bore and stroke

3.6" x 3.4" / 92 mm x 86 mm


SmartCraft PCM 112 Digital Inductive

Cooling system

Water-cooled with thermostat

Gear shift


Gearcase options


Trim system

Power trim and tilt

Exhaust system

Through prop

Counter Rotation



Cold Fusion White

Pearl Fusion White

Phantom Black

Warm Fusion White

Lubrication system

Integrated wet sump

Oil Capacity

7.0 Quarts / 6.6 Litres

Maximum Trim Range

20° (-6° to 14°)

Maximum Tilt Range

73° (-6° to 67°)

Engine 1

Engine Make Mercury V8 Outboards
Displacement 4.6
Horse Power 250
Fuel Type Premium Unleaded
Drive Type Outboard
Stroke 4-Stroke


Mercury 250 HP Fourstroke V8 Brochure
2018 Mercury Full Range Brochure