The BMW TwinPower Turbo engines of the BMW 4 Series Convertible.

The nerve centre of the BMW 4 Series Convertible is its engine. BMW TwinPower Turbo technology combines innovative turbocharger technologies with Valvetronic including double-VANOS and High Precision Injection for the petrol engines. The diesel engines feature the latest generation of common rail direct injection and variable turbine geometry. All with one goal in mind: maximum convertible driving pleasure.

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The latest generation BMW TwinPower Turbo petrol engines feature remarkably agile power delivery and excellent responsiveness, even at low engine speeds. At the same time they are more efficient, with fewer emissions and better performance than their predecessors. These innovative engines combine the latest fuel injection technology and fully variable valve control including Double-VANOS with state-of-the-art turbocharger technology and represents a milestone in the BMW EfficientDynamics development strategy. The result is a particularly efficient drive train, which emphasises the renowned BMW engine prowess. The BMW TwinPower Turbo inline 6-cylinder petrol engine has been honoured multiple times with the Engine of the Year Award, bolstering its worldwide reputation for dynamic power delivery, extremely smooth running characteristics and impressive efficiency. The engines from the BMW EfficientDynamics range feature a technology concept that has been proven highly successful and is implemented in nearly all petrol engines.