Four-cylinder diesel engine
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Four-cylinder diesel engine.

The new four-cylinder diesel engines are a perfect example of how BMW EfficientDynamics can help continually improve engine performance. The engine block is made of aluminium and offers optimised combustion chamber geometry while the third-generation common rail fuel injection system introduces the diesel into the combustion chamber at remarkably high pressure - up to 1,600 bar - and with outstanding precision, using state-of-the-art piezo injection technology. The sum of these technologies is what makes the notable difference: significantly reduced CO2 emissions of 119 g/km (for the BMW 118d with manual transmission) to 145 g/km (for the BMW 120d with automatic transmission) yet higher performance levels. Both engines are fitted with a diesel particle filter as standard and comply with EU4 emissions regulations.

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