For BMW enthusiasts, the 335is model holds a special place, known for its enhanced performance. However, a lingering question often arises regarding its horsepower (HP) rating. Officially, BMW states the 335is produces 320 HP. Yet, when you delve deeper, inconsistencies and comparisons with the Z4 sDrive 35is, which shares the same engine, spark a debate. Is the Bmw 335is Hp truly capped at 320, or is there more to the story?
The Z4 sDrive 35is, equipped with what is essentially the same N54 engine, boasts a 335 HP rating, alongside identical torque figures and RPM ranges as the 335is. BMW attributes this 15 HP difference to a “less restrictive intake” in the Z4. However, this explanation has been met with skepticism within the BMW community. Could a slightly different intake truly account for such a power discrepancy?
Adding to the intrigue, dyno tests of the 335is often reveal wheel horsepower figures in the 285-295 range. While drivetrain losses account for some difference between crank and wheel HP, these numbers seem to suggest the 335is might be producing closer to the Z4’s output at the crank level as well.
Furthermore, even within BMW’s own publications, contradictions emerge. A Roundel article once referenced the 335is as having 335 HP. More surprisingly, the official BMW 3 Series Coupe/Convertible owner’s manual, in its technical specifications section, also lists the 335is with a maximum power of 335 HP. This official documentation directly contradicts the widely advertised 320 HP figure.
Could this be a case of intentional marketing strategy? Perhaps BMW strategically under-rated the 335is to maintain a clearer performance gap with the then-range-topping M3. Or are we simply looking at a series of typos and inconsistencies across different sources?
Conclusion:
The true BMW 335is HP figure remains somewhat of an enigma. While officially stated at 320 HP, evidence from dyno results, BMW’s own owner’s manual, and comparisons to the Z4 35is raise valid questions. Whether it’s marketing tactics or simple errors, the debate around the 335is HP rating continues to fascinate BMW enthusiasts.
