What is difference between turbo non turbo engine in diesel car?

Answer 1

Turbo diesel - a idesel engine with a turbocharger to increase engine performance. Most of the time used to increase power which reduces fuel economy. In some cases, the gain of power sometimes grants the gain of fuel economy by added exhaust gas back pressure. Back pressure on exhaust increases the amount of exhausted gas returns through an EGR system (exhausted gas return) which gives more exhaust to the intake to lower the oxygen content which lowers the amount of injected fuel for high fuel savings. This is generally a gas engine concept but newer 2004+ diesel engines will tend to have this system as more and more electronic control is pioneered into diesel engines.

Non-turbo - also known as naturally aspirated engines. This is an engine that uses no Turbo. Most vehicles are this way unless they have special model trims that have Turbo package options.