Within the BMW 5 Series, the BMW 520i was the entry into the world of six-cylinder petrol engines. All these engines epitomise dynamic driving pleasure and impressive running smoothness. This is particularly true for the version with displacement of two litres. New engines from 2001 increased the power from the original level of 150 hp to 170 hp. Innovative technologies like variable valve timing (VANOS) and the world’s first lightweight alloy chassis manufactured in large-scale production helped to reduce fuel consumption.