New Mercury V10 350-400 hp engine: price, availability and exclusive test with Moteur Boat!

It’s been a while, at least since the fall shows, that rumors have been swirling about the imminent arrival of a new big block at Mercury Marine. The noises of pontoons were proven since on November 15 the Verado V10 350-400 horsepower was launched with a bang in Florida.

Motor Boat went to test the new Mercury V10 350-400 hp on Lake X, the engine manufacturer’s test base in Florida.

The Mercury V10 marks the retirement of the Verado L6

The 5.7 L block naturally takes its place between the V8-300 and the V12-600. It also marks the retirement of the legendary supercharged Verado L6, launched in 2004. No more compressor, we are here in the presence of a big atmospheric V10 because, according to the new favorite maxim of the engine manufacturer “ there is no replacement for displacement or basically “nothing replaces a large engine”!

The 350 hp version of the V10 Mercury Verado

The 350 hp version of the V10 Mercury Verado

The 350 horsepower version of the V10 Mercury Verado

But our V10 isn’t just a “light” version of the V12; admittedly the bore is the same, but the stroke is a little shortened. A certain number of parts are still found on the two blocks to promote economies of scale, at the historic factory in Fond du Lac (Wisconsin).

Mercury V10: a fixed base, not like the V12

The steering system: if the V12 has a directional base with double propeller, the new V10 has a classic single propeller base and a direction similar to the V6 and V8 Verado that we know. The choice of a directional drive was relevant on the V12, whose weight of 572 kilos could not wander from side to side without causing problems with the stability of the boat. For the lighter V10, this technology was not necessary.

The V10 Mercury in triple assembly on a Scout 355 LXF open hull, with the new 100% electric steering available as an option from February 2023!

The V10 Mercury in triple assembly on a Scout 355 LXF open hull, with the new 100% electric steering available as an option from February 2023!

The V10 Mercury in triple assembly on a Scout 355 LXF open hull, with the new 100% electric steering available as an option from February 2023!

Please note: a new 100% electric steering using Dometic/Optimus technology will be available as an option on the V10 in 2023. We tried it: it is even more responsive than the famous electro-hydraulic steering that made the reputation of the Verado.

Mercury V10: much bigger propellers

The “king size” base of the new V10s with a high gear ratio can take propellers with 50% more blade surface compared to the old 400 hp Verado L6. In other words, the gain in torque is phenomenal.

We find on our V10 the ASC technology avoiding drops in speed when cornering, the “Transient spark” adjusting the ignition advance to promote torque, the ARO optimizing the richness of the air / fuel mixture, and also the section intermediate “AMS” limiting the vibrations transmitted to the transom.

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The “king size” base of the Mercury V10 receives a new Revolution X 4-blade propeller specially designed for this engine.

The alternator of our V10 can generate up to 6.5 kW of power. Coupled with Navico’s Fathom system (Brunswick group), the V10 can dispense with the installation of a generator on board!

Mercury V10: our first test, prices and availability

Noise level: our tests of the V10 aboard a Sea-Ray 260 SLX and a Bayliner Trophy 24 CC revealed a perceived noise level comparable to that of the already remarkable Verado L6s. At high revs, however, the muffled sound of the L6 compressor seems softer to us than that of the V10, beyond 5,500 rpm. It’s a first impression.

We topped 52 knots aboard the new Sea Ray 260 SLX equipped with the V10-350 Mercury, on Lake X in Florida.

We topped 52 knots aboard the new Sea Ray 260 SLX equipped with the V10-350 Mercury, on Lake X in Florida.

We topped 52 knots aboard the new Sea Ray 260 SLX equipped with the V10-350 Mercury, on Lake X in Florida.

Performance: aboard the new Sea Ray SLX 260 equipped with the V10-350 Verado, we reached 52.3 knots at 6,000 rpm with six people on board! We obtained the best cruising speed at 4000 rpm: 48 litres/hour for a speed of 32.7 knots.

Price :

  • Mercury Verado V10-350: from €41,802 as standard
  • Mercury Verado V10-400: from €46,196 as standard

Availablity : the V10 350 and 400 is scheduled for delivery to construction sites in France end of 2022 and will be available in the Mercury France network in January 2023.

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The article is in French

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