What is the difference between Gas and Diesel engines?

The greatest achievements in technical development have taken place with diesel engines. For example, the Volvo Penta D series has electronically controlled common rail fuel injection, four valves per cylinder and various types of optimised supercharging with turbo and sometimes also compressor.

All this gives performance equal to, sometimes even better than, that of gasoline engines of corresponding power. At the same time, fuel consumption is lower, reliability is greater, service life longer and second-hand value higher.

Gasoline engines offer high performance and relatively low weight. Electronic fuel injection gives high reliability, low emissions and fast response for an enjoyable experience at the helm. The price of a gasoline engine is generally lower than that of a diesel engine.

If you switch from gasoline to diesel, you can often specify a lower power output without actually losing anything in terms of performance, apart from outright top speed, since a diesel engine offers better torque as well as being designed to operate closer to its max rev limit. When changing from gasoline to diesel, the air, fuel and cooling systems need to be checked.