Specification 2025 Mercury 40 FourStroke 2025 Mercury 40 SeaPro
Manufacturer Mercury Mercury
Model 40 FourStroke 40 SeaPro
Year 2025 2025
Horsepower 40 HP 40 HP
Engine Type 4-stroke 4-stroke
Cylinders 3 3
Displacement 710 cc 799 cc
Bore × Stroke 67.7 × 65.7 mm 72.0 × 65.4 mm
RPM Range 5,100–6,100 RPM 5,300–6,100 RPM
Fuel System EFI EFI
Fuel Type Regular Regular
Weight 92 kg (203 lbs) 92 kg (203 lbs)
Starting System Electric Electric
Steering Both Remote
Shaft Lengths S/L S/L
Gear Ratio 1.83:1 1.83:1
Alternator 21 A 23 A
Trim & Tilt Power Tilt Power Trim/Tilt
Prop Output 24.76 kW 25.35 kW
Recommended Boat 14–19 ft 14–19 ft
MSRP $8,060 $6,920
Better / Advantage Lower / Disadvantage Equal / Neutral

2025 Mercury 40 FourStroke vs 2025 Mercury 40 SeaPro — Which Is Better?

Choosing between the 2025 Mercury 40 FourStroke and the 2025 Mercury 40 SeaPro comes down to your specific boating needs and priorities.

The 2025 Mercury 40 FourStroke (2025) is a 40hp 4-stroke outboard from Mercury, weighing 92 kg (203 lbs). Its electronic fuel injection delivers reliable starts and improved fuel economy compared to carbureted alternatives.

The 2025 Mercury 40 SeaPro offers 40hp with 4-stroke technology, tipping the scales at 92 kg (203 lbs). With a larger displacement of 799 cc, it can deliver more torque at lower RPMs.

Both motors are solid choices in the 40 HP class. Your final decision should factor in your boat size, typical use conditions, dealer availability in your area, and budget.