2025 Mercury Marine® FourStroke 40 EFI Base

Information

2025 Mercury Marine® FourStroke 40 EFI

Held to a Higher Standard.

There are plenty of good reasons these outboards rule the water. Start with no-worry reliability. More low-end torque for excellent acceleration. Increased fuel economy and outstanding overall performance. Enhanced fuel injection (EFI models) for boosted efficiency. A robust electrical system with a high-output alternator to keep batteries charged and fishing electronics humming. They have everything you need, and nothing you don't.

Mercury EFI outboards deliver reliable turnkey starts, improved fuel efficiency, and instant throttle response.

Photos

Highlights

  • Courtenay, British Columbia
  • 2025
  • Mercury Marine®
  • FourStroke 40 EFI Base
  • Recommended: 87 octane / up to 10% ethanol
  • Lightest model available: 204 lbs (93 kg)
  • Available

Specifications

  • 2025
  • Mercury Marine®
  • FourStroke 40 EFI
  • Base
  • Four Stroke
  • 40 HP (30 KW)
  • Inline 3
  • 45.6 CID (747 CC)
  • Full: 5500-6000 RPM
  • Recommended: Mercury FourStroke 25W40 Marine Oil
  • 2.00:1 | Shift: F-N-R
  • CARB star rating: 3
  • System: Wet sump
  • 2.56" (65 mm)
  • 2.95" (75 mm)
  • ECM 70
  • Remote | Tiller
  • Water-cooled with thermostat
  • Through prop
  • Shallow water trim range (degrees): 20°
  • 18 amp (226 watt)
  • Electric (turn-key)
  • induction: 2 valves per cylinder, single overhead cam (SOHC) | Electronic Fuel Injection (EFI)
  • Recommended: 87 octane / up to 10% ethanol
  • Shaft: 15" (381 mm) | 20" (508 mm)
  • Lightest model available: 204 lbs (93 kg)
  • Engine protection operator warning system: Low oil pressure/Over-rev/Overheat | Compatible with SmartCraft digital technology: Yes | Trim system: Gas assist/Power Tilt/Power Trim
  • Phantom Black