Vetus M4.56

The Vetus M4.56 is the flagship of the M-Line range, extracting a remarkable 52 HP from the compact four-cylinder block through optimised turbocharging. This gives the M4.56 the best power-to-weight ratio in the M-Line series, delivering performance that belies its compact dimensions.

The turbocharged engine provides strong, responsive acceleration across a wide power band, making it suited to heavier vessels, sportier craft, and applications where reserve power is important. Despite the higher output, the M4.56 retains the M-Line's hallmark refinement — water-cooled top cover for reduced engine room heat, near-silent cruising, and HVO fuel compatibility.

Luxfords recommends the M4.56 for owners looking for the maximum performance available from a compact, lightweight marine diesel. The team can advise on propeller matching, gearbox selection, and installation considerations to extract the best performance from this capable engine.