Mercury Marine engine

V10-425

In production 2025–present

The Mercury Verado V10-425 is a naturally aspirated 5.7-litre 64-degree V10 petrol outboard rated 425 hp, announced in July 2025.

The V10-425 is the July 2025 flagship rating of Mercury's 5.7-litre V10 Verado family. Architecture is a 64-degree V10 with 40-valve quad-cam DOHC, performance-tuned intake and Advanced MidSection, the same powerhead as the 400 and the enhanced 350. It is not a 2022 rating and must not be back-dated.

Mercury's October 2025 V10 sell sheet lists WOT 6000–6600 rpm (higher than the 350/400 band of 5800–6400), displacement 5.7 L (349 CID), gear ratio 2.08:1, shaft lengths 20/25/30/35 inches, and dry weight 695 lb / 316 kg for the lightest model. Mounting centres are 26 inches. It is sold as Verado only, not Pro XS.

This is a naturally aspirated 5.7-litre V10. It is not the 2010s supercharged 2.6-litre L6 Verado 400 / 400R.

Specifications

Power

Power
425 hp
Power (kW)
317 kW
Rated speed
6600 rpm

Engine

Configuration
V10
Cylinders
10
Displacement
5.7 L
Weight
316 kg
Fuel
Petrol
Mounting
Outboard
Stroke
4-stroke

Reviews

No independent reviews on file yet.

Sources

  1. 1. Mercury expands V10 Verado lineup with 425hp and enhanced 350hp (22 Jul 2025) — Mercury Marine
  2. 2. Mercury V10 Verado sell sheet 8M0210635 (16 Oct 2025) — Mercury Marine
  3. 3. 350–425hp V10 Verado dealer spec table — Brisbane Marine

Specifications compiled from manufacturer sources.