What is the engine code for the BMW M3's inline-six turbocharged engine?
3 Answers
The engine code for the BMW M3's inline-six turbocharged engine is S55B30, which is a twin-turbocharged engine. Twin-turbocharging is one of the methods of turbocharging. A turbocharger is an air compressor driven by the exhaust gases produced by the operation of an internal combustion engine through a structure composed of two coaxial impellers. Its function is similar to that of a supercharger, as both can increase the air flow into the internal combustion engine or boiler. The exterior of the BMW M3 continues BMW's signature sharp lines and muscular design, fully showcasing the personalized style of the BMW 3 Series. The car's elongated engine hood, highly dynamic long wheelbase, noticeably rearward-positioned cabin, and short front overhang clearly demonstrate the BMW 3 Series Coupe's more sporty inclination compared to the regular 3 Series.
As a car enthusiast, I'm fascinated by the powertrain of the BMW M3. Its inline-six turbocharged engine, codenamed S55B30, was the benchmark for the previous-generation F80 model. This engine utilizes twin-turbo technology, delivering 431 horsepower with swift yet smooth acceleration. When discussing in car enthusiast circles, I often remind everyone to pay attention to engine maintenance, such as regularly checking the oil and cooling system. BMW engine codes starting with 'S' indicate high-performance M series, distinguishing them from regular versions. Although the newer S58 has been upgraded, the S55 also excels in reliability. Friends who have driven the M3 praise its sound and responsiveness, and understanding engine codes can make you more professional when modifying or repairing cars.
I've come across quite a few BMW M3s during repairs. Their inline-six turbocharged engine, codenamed S55B30, was commonly found in models from 2014 to 2018. This engine is relatively durable, but minor issues can easily arise if maintenance is neglected, such as oil carbon buildup or abnormal turbo pressure. When diagnosing problems, I first check the codename system, which indicates a 3.0-liter displacement with reinforced components to withstand track pressure. I recommend owners replace the air filter and spark plugs every 5,000 kilometers to extend engine life. The newer S58 follows a similar design, but the S55 is more economical and easier to maintain.
