Specification 2024 Mercury 450R 2024 Yamaha F425XTO
Manufacturer Mercury Yamaha
Model 450R F425XTO
Year 2024 2024
Horsepower 450 HP 425 HP
Engine Type 4-stroke 4-stroke
Cylinders 8 8
Displacement 5,448 cc 5,615 cc
Bore × Stroke 95.7 × 94.7 mm 99.7 × 89.8 mm
RPM Range 5,300–6,500 RPM 5,300–6,200 RPM
Fuel System EFI EFI
Fuel Type Regular Regular
Weight 412 kg (908 lbs) 370 kg (816 lbs)
Starting System Electric Electric
Steering Remote Remote
Shaft Lengths XL/XXL XL/XXL
Gear Ratio 1.73:1 1.75:1
Alternator 63 A 77 A
Trim & Tilt Power Trim/Tilt Power Trim/Tilt
Prop Output 295.30 kW 266.21 kW
Recommended Boat 26–40 ft 26–40 ft
MSRP $63,280 $57,330
Better / Advantage Lower / Disadvantage Equal / Neutral

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

Choosing between the 2024 Mercury 450R and the 2024 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 2024 Yamaha F425XTO offers 425hp with 4-stroke technology, tipping the scales at 370 kg (816 lbs). With a larger displacement of 5,615 cc, it can deliver more torque at lower RPMs.

At 370 kg (816 lbs), the 2024 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.