Four-cylinder engines.

Low on weight, big on horsepower: the four-cylinder petrol engines produce responsive, dynamic power at all engine speeds, performing with remarkable smoothness and fuel efficiency.

From the aluminium crankcase with its open deck construction to the high-performance synthetics of the intake manifold: the four-cylinder engine boasts an array of innovative lightweight materials, making it astoundingly light yet highly robust.
Excellent performance is guaranteed, thanks to sophisticated BMW engineering technologies such as Valvetronic, the fully variable valve control system that regulates the amount of air in each combustion chamber by individually controlling air intake and exhaust valves.
Together with the variable camshaft control system, Vanos or double-Vanos, this technology enables remarkably responsive power output plus dramatically improved fuel efficiency. Torque output is consistent and generous, even at low engine speeds. Whatever the engine speed, the four-cylinder power unit performs with impressive refinement and exemplary fuel economy and low emissions.

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