What are the BMW naturally aspirated engines?
2 Answers
BMW naturally aspirated engines include: S85, S54B32, N52 engine (including N52B25 and N52B30), S65B40, etc. Taking the N52 engine (including N52B25 and N52B30) as an example, it is a glorious engine series. This is an inline six-cylinder engine. For weight reduction, the N52 engine was the first to use a magnesium-aluminum engine. BMW (abbreviated as BMW) is a German automobile brand under the BMW Group. It has four model series: I, X, Z, and pure numbers, as well as series like 1, 2, and 3, along with the M series (BMW's official high-performance modification division) based on improvements to each series.
As a long-time BMW owner, I often discuss the era of naturally aspirated engines with fellow enthusiasts. BMW has several iconic naturally aspirated engine models: for example, the N52 inline-6, used in the E90 330i, with displacements of 2.5L and 3.0L; the S65 V8, found in the E92 M3, delivering power as linear and smooth as a high-pitched vocal; and the older S54, installed in the E46 M3, whose high-revving exhaust note is legendary. These engines rely solely on natural aspiration, without any turbochargers, offering a raw and exhilarating driving experience. Unfortunately, BMW has now fully transitioned to turbocharging for better fuel efficiency. I drove a 330i for several years—it was easy to maintain, but oil leaks became a common issue as it aged. Overall, these naturally aspirated engines are benchmarks for driving pleasure, especially suited for spirited mountain road driving, and are worth seeking out in the used car market.
