Are the Engines of BMW 525 and 530 the Same?

[Emil]

BMW 525 and 530 do not have the same engine. Both the 525 and 530 are generally equipped with BMW's B48 series 2.0-liter inline 4-cylinder turbocharged engine. However, the engine in the BMW 525 is coded as B48B20C, while the engine in the BMW 530 is coded as B48B20D, with only a one-letter difference in the code. Maximum Horsepower: The maximum horsepower of the 525 engine is 184 hp, with a maximum torque of 290 Nm. The maximum horsepower of the 530 engine is 252 hp, with a maximum torque of 350 Nm. Power: The two engines are differentiated as high-power and low-power versions. The high-power engine has greater turbo pressure, which results in higher cylinder pressure. Excessive cylinder pressure can easily cause knocking, so the compression ratio of the high-power engine needs to be smaller than that of the low-power engine. A smaller compression ratio means different piston shapes.