The 2005-2009 BMW 330i Sedan (E90 generation) is a well-regarded entry-level luxury sports sedan. Reviewers and enthusiasts often praise its solid build and the N52 engine (particularly in the 330i), which is considered one of the least problematic BMW engines, offering strong performance and reliable operation. It is famous for its engaging driving dynamics and reliable N52 engine. Infamously, these models are prone to common BMW issues like oil leaks, VANOS solenoid problems, and water pump/cooling system failures. Today, the 330i is well-suited for enthusiasts seeking a dependable, driver-focused daily commuter or weekend car, provided preventive maintenance addresses its common wear items.
Maintenance is common due to issues like oil leaks, and failures in the blower fan resistor, water pump, and expansion tank. While the engine and driveline are generally reliable, these problems can lead to unusual maintenance costs and check engine lights.
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