Specification 2024 Mercury 300 FourStroke 2025 Mercury 300 SeaPro
Manufacturer Mercury Mercury
Model 300 FourStroke 300 SeaPro
Year 2024 2025
Horsepower 300 HP 300 HP
Engine Type 4-stroke 4-stroke
Cylinders 6 6
Displacement 4,503 cc 4,044 cc
Bore × Stroke 99.1 × 97.2 mm 96.6 × 92.0 mm
RPM Range 5,400–6,600 RPM 5,500–6,600 RPM
Fuel System EFI EFI
Fuel Type Regular Regular
Weight 310 kg (684 lbs) 310 kg (684 lbs)
Starting System Electric Electric
Steering Remote Remote
Shaft Lengths XL/XXL XL/XXL
Gear Ratio 1.85:1 1.73:1
Alternator 64 A 62 A
Trim & Tilt Power Trim/Tilt Power Trim/Tilt
Prop Output 196.86 kW 183.44 kW
Recommended Boat 22–33 ft 22–33 ft
MSRP $38,600 $36,760
Better / Advantage Lower / Disadvantage Equal / Neutral

2024 Mercury 300 FourStroke vs 2025 Mercury 300 SeaPro — Which Is Better?

Choosing between the 2024 Mercury 300 FourStroke and the 2025 Mercury 300 SeaPro comes down to your specific boating needs and priorities.

The 2024 Mercury 300 FourStroke (2024) is a 300hp 4-stroke outboard from Mercury, weighing 310 kg (684 lbs). Its electronic fuel injection delivers reliable starts and improved fuel economy compared to carbureted alternatives. Power trim and tilt makes it easy to adjust on the water.

The 2025 Mercury 300 SeaPro offers 300hp with 4-stroke technology, tipping the scales at 310 kg (684 lbs). Its more compact 4,044 cc displacement keeps weight down while maintaining efficiency.

Both motors are solid choices in the 300 HP class. Your final decision should factor in your boat size, typical use conditions, dealer availability in your area, and budget.