Specification2025 Mercury 3.5 FourStroke2025 Tohatsu MFS3.5CS
ManufacturerMercuryTohatsu
Model3.5 FourStrokeMFS3.5CS
Year20252025
Horsepower4 HP4 HP
Engine Type4-stroke4-stroke
Cylinders11
Displacement129 cc118 cc
Bore × Stroke57.4 × 49.9 mm54.0 × 51.5 mm
RPM Range4,700–5,800 RPM4,600–5,500 RPM
Fuel SystemCarburetedCarbureted
Fuel TypeRegularRegular
Weight27 kg (59 lbs)27 kg (58 lbs)
Starting SystemElectric/ManualElectric/Manual
SteeringTillerTiller
Shaft LengthsSS/L
Gear Ratio2.15:12.15:1
AlternatorN/AN/A
Trim & TiltManualManual
Prop Output2.48 kW2.48 kW
Recommended Boat8–12 ft8–12 ft
MSRP$1,790$1,510
Better / Advantage Lower / Disadvantage Equal / Neutral

2025 Mercury 3.5 FourStroke vs 2025 Tohatsu MFS3.5CS — Which Is Better?

Choosing between the 2025 Mercury 3.5 FourStroke and the 2025 Tohatsu MFS3.5CS comes down to your specific boating needs and priorities.

The 2025 Mercury 3.5 FourStroke (2025) is a 4hp 4-stroke outboard from Mercury, weighing 27 kg (59 lbs).

The 2025 Tohatsu MFS3.5CS offers 4hp with 4-stroke technology, tipping the scales at 27 kg (58 lbs). Its more compact 118 cc displacement keeps weight down while maintaining efficiency.

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.