Skip to main content
A Factual Report From Mercury Marine

Boat House Bulletin Review

Engine:

8.2 MAG ECT Mercury® MerCruiser®

Boat:

Cobalt - A 25

Prop:

Bravo Three®

8.2 MAG ECT
Select Units:

Performance Summary

Best Fuel Economy (MPG@RPM) Best Fuel Economy (L/100km@RPM) Best Fuel Economy (L/nm@RPM)
  • 2.7 @ 3000
  • 87.1 @ 3000
  • 0.6 @ 3000
Top Speed (MPH@RPM) Top Speed (KPH@RPM) Top Speed (kts@RPM)
  • 51.0 @ 4800
  • 82.1 @ 4800
  • 44.3 @ 4800
Acceleration 0 - 20 MPH (seconds)
  • 4.82
Acceleration 0 - 30 MPH (seconds)
  • 7.37
RPM Range Speed (MPH / kts) Speed (KPH / kts) Fuel (GPH) Fuel (LPH) Fuel (MPG) Fuel (L/100km)
1000 6.1 / 5.3 9.8 / 5.3 2.5 9.5 2.4 98.0
2000 11.3 / 9.8 18.2 / 9.8 7.7 29.1 1.5 156.8
3000 30.9 / 26.9 49.7 / 26.9 11.4 43.2 2.7 87.1
3500 37.4 / 32.5 60.2 / 32.5 15.0 56.8 2.5 94.1
4000 43.1 / 37.5 69.4 / 37.5 20.6 78.0 2.1 112.0
4500 48.4 / 42.1 77.9 / 42.1 27.4 103.7 1.8 130.7
4800 51.0 / 44.3 82.1 / 44.3 31.6 119.6 1.6 147.0

Performance Curve

GPH MPH MPG
LPH KPH L/100km

Test Conditions

Test Date
  • 2013-09-04
Test Conductor
  • DH/SS
Air Temperature
  • 92 °F
  • 33 °C
Water Type
  • Salt
Fuel Level at Testing
  • 50 gallons
  • 189 liters
Boat Weight as Tested
  • 5125 lbs
  • 2325 kg

Engine Specifications

Engine
  • 8.2 MAG ECT Mercury® MerCruiser®

Boat Specifications

Manufacturer
  • Cobalt
Website
Boat Model
  • A 25
Boat Type
  • Runabout - open bow
Material
  • Fiberglass
Length
  • 25 ft 6 in
  • 7.8 m
Beam
  • 8 ft 6 in
  • 2.6 m
Max HP Capacity
  • n/a
Fuel Tank Capacity
  • 50.0 gallons
  • 189 liters
Steering Type
  • MerCruiser Power Steering
Dry Boat Weight
  • 5125 pounds
  • 2324.7 kg
Mounting Bolt Hole
  • n/a

Propeller Specifications

Part Number
  • 8M8022420
Mercury Name
  • Bravo Three®
Pitch
  • 24.0
Scroll to Top