BMW 5 Series Sedan : Straight six-cylinder petrol engines (BMW 523i, 528i, 535i)

Straight six-cylinder petrol engines
in the BMW 523i and 535i.

How can you improve an engine that has already won six times at the Engine of the Year Awards? With a Twin Scroll turbocharger, Valvetronic and direct petrol injection for a start.

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The improvements are evolutionary as each one of the three technologies has been developed further. What is revolutionary however is how they compliment one another. In the BMW 535i they are combined in one complete package. The result: 225 kW (306 hp), 400 Nm across a wide speed range and silky smoothness. And all this at a fuel consumption level of just 8.5 l/100 km.

Impressive smoothness and high performance are also what characterise the straight six-cylinder engine in the BMW 523i. Alusil cylinders and a magnesium crankcase make it one of the lightest six-cylinder engines in its class: 150 kW (204 hp) in the BMW 523i. An advantage that you not only notice with the driving dynamics but also with the fuel consumption levels of 7.6 l/100 km. So can these values be improved upon? Of course, with the eight-speed automatic transmission Steptronic.

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Fuel consumption / CO2 emissions

Fuel consumption
Combined: 4.9 to 10.4 l/100 km
Urban: 5.9 to 15.4 l/100 km
Extra-urban: 4.3 to 7.5 l/100 km

Combined CO2 emissions: 129 to 243 g/km

 
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