How well do Volvo marine diesel engines work?

Volvo marine diesel engines are widely considered to be highly efficient and reliable choices for boat propulsion that also have long service lives. However, both upfront purchase costs and maintenance are often higher for Volvo marine diesel engines than for other options.

Many older Volvo marine diesel engine designs use a raw water cooling design that can lead to corrosion and buildups of impurities in the engine, especially for boats used in salt water or in polluted areas. Damage from corrosion and engine deposits is often expensive to fix since the engine must be disassembled for cleaning. In addition, parts for older Volvo diesel engines are often expensive and difficult to locate.