Why does Volkswagen use cast iron cylinder blocks?
2 Answers
Volkswagen uses cast iron cylinder blocks for the following reasons: low cost and mature technology. Taking the Volkswagen Magotan 2020 model as an example, its body dimensions are: length 4865mm, width 1832mm, height 1471mm, with a wheelbase of 2871mm, a fuel tank capacity of 66 liters, and a trunk capacity of 533 liters. The Volkswagen Magotan 2020 model is equipped with a 1.4T turbocharged engine, delivering a maximum power of 110kW and a maximum torque of 250Nm, paired with a 7-speed dual-clutch transmission. It adopts a front suspension type of MacPherson independent suspension and a rear suspension type of multi-link independent suspension.
To be honest, Volkswagen chooses cast iron cylinder blocks mainly to save money and control costs. Having worked in the automotive industry for decades, I've seen firsthand that cast iron materials are much cheaper than aluminum alloys, allowing significant cost savings in mass production. As a mainstream brand, Volkswagen aims to keep car prices affordable. Cast iron cylinder blocks are durable, easy to manufacture, and have low maintenance costs. With high strength and wear resistance, cast iron ensures stable engine operation, making it particularly suitable for family cars or diesel vehicles. Although aluminum cylinder blocks can reduce weight and save some fuel, their higher price and complex manufacturing processes make cast iron the preferred choice for Volkswagen in many models, including SUVs like the Tiguan. This approach helps owners save money and reduces repair concerns. In the long run, cast iron is also easier to recycle, minimizing resource waste. In summary, from an economic perspective, cast iron is a pragmatic choice for Volkswagen.
