Specification2024 Mercury 450R2025 Yamaha F425XTO
ManufacturerMercuryYamaha
Model450RF425XTO
Year20242025
Horsepower450 HP425 HP
Engine Type4-stroke4-stroke
Cylinders88
Displacement5,448 cc5,559 cc
Bore × Stroke95.7 × 94.7 mm100.6 × 87.5 mm
RPM Range5,300–6,500 RPM5,400–6,400 RPM
Fuel SystemEFIEFI
Fuel TypeRegularRegular
Weight412 kg (908 lbs)359 kg (791 lbs)
Starting SystemElectricElectric
SteeringRemoteRemote
Shaft LengthsXL/XXLXL/XXL
Gear Ratio1.73:11.73:1
Alternator63 A71 A
Trim & TiltPower Trim/TiltPower Trim/Tilt
Prop Output295.30 kW282.06 kW
Recommended Boat26–40 ft26–40 ft
MSRP$63,280$58,560
Better / Advantage Lower / Disadvantage Equal / Neutral

2024 Mercury 450R vs 2025 Yamaha F425XTO — Which Is Better?

Choosing between the 2024 Mercury 450R and the 2025 Yamaha F425XTO comes down to your specific boating needs and priorities.

The 2024 Mercury 450R (2024) is a 450hp 4-stroke outboard from Mercury, weighing 412 kg (908 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 Yamaha F425XTO offers 425hp with 4-stroke technology, tipping the scales at 359 kg (791 lbs). With a larger displacement of 5,559 cc, it can deliver more torque at lower RPMs.

At 359 kg (791 lbs), the 2025 Yamaha F425XTO is the lighter option — an important consideration for smaller boats, portability, and overall fuel efficiency.

Both motors are solid choices in the 400 HP+ class. Your final decision should factor in your boat size, typical use conditions, dealer availability in your area, and budget.