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4USBT33473LS43902
Vehicle Summary
The 2003 BMW Z4 2.5si is a convertible roadster with a sleek design and robust performance. It features a 2.5-liter inline-six engine producing 184 horsepower, making it a spirited drive. Manufactured in Spartanburg, South Carolina, this model is known for its agile handling and classic BMW driving dynamics. With a lightweight build and stylish appearance, the Z4 2.5si is perfect for those who enjoy open-top driving experiences.
Complete Specifications
Common Issues for This Vehicle
Oil leaks
The 2003 BMW Z4 with an in-line 6-cylinder engine is known for developing oil leaks, particularly from the valve cover gasket, oil filter housing gasket, and oil pan gasket.
Cooling system failures
Issues with the radiator, water pump, and thermostat are common in this model, leading to potential overheating and engine damage if not addressed promptly.
Vanos system problems
The Variable Valve Timing system (VANOS) can fail, leading to rough idling, loss of power, and poor fuel economy.
Ignition coil failure
The ignition coils in this model are prone to failure, which can cause misfires, rough running, and poor acceleration.
Crankcase ventilation issues
The crankcase ventilation system can become clogged or fail, leading to excessive oil consumption and possible engine performance issues.
Timing chain tensioner failure
The timing chain tensioner may wear out, causing a rattling noise and potentially leading to timing chain failure if not replaced.
Fuel pump issues
The fuel pump can fail, resulting in poor engine performance, difficulty starting, or stalling.
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