Specification 2024 Mercury 3.5 FourStroke 2025 Mercury 3.5 FourStroke
Manufacturer Mercury Mercury
Model 3.5 FourStroke 3.5 FourStroke
Year 2024 2025
Horsepower 4 HP 4 HP
Engine Type 4-stroke 4-stroke
Cylinders 1 1
Displacement 124 cc 129 cc
Bore × Stroke 56.5 × 49.5 mm 57.4 × 49.9 mm
RPM Range 4,600–5,600 RPM 4,700–5,800 RPM
Fuel System Carbureted Carbureted
Fuel Type Regular Regular
Weight 28 kg (62 lbs) 27 kg (59 lbs)
Starting System Manual Electric/Manual
Steering Tiller Tiller
Shaft Lengths S/L S
Gear Ratio 2.15:1 2.15:1
Alternator N/A N/A
Trim & Tilt Manual Manual
Prop Output 2.62 kW 2.48 kW
Recommended Boat 8–12 ft 8–12 ft
MSRP $1,660 $1,790
Better / Advantage Lower / Disadvantage Equal / Neutral

2024 Mercury 3.5 FourStroke vs 2025 Mercury 3.5 FourStroke — Which Is Better?

Choosing between the 2024 Mercury 3.5 FourStroke and the 2025 Mercury 3.5 FourStroke comes down to your specific boating needs and priorities.

The 2024 Mercury 3.5 FourStroke (2024) is a 4hp 4-stroke outboard from Mercury, weighing 28 kg (62 lbs).

The 2025 Mercury 3.5 FourStroke offers 4hp with 4-stroke technology, tipping the scales at 27 kg (59 lbs). With a larger displacement of 129 cc, it can deliver more torque at lower RPMs.

Both motors are solid choices in the 4 HP class. Your final decision should factor in your boat size, typical use conditions, dealer availability in your area, and budget.