Most Common Car Issues
Selected parameters
Engine Model
1NZ-FXE+Motor
Add more parameters
MOST COMMON PROBLEMS
TOYOTA Prius 2003
The 2003 Toyota Prius is a hybrid electric sedan with a 1.5L inline-4 engine. It features a 4x2 drive type and offers both gasoline and electric power. Manufactured by Toyota Motor Corporation in Toyota City, Japan, this model provides safety with front and side airbags for the driver and passenger.
Spec:
Engine Brake (hp) From
70
Engine Configuration
In-Line
Engine Model
1NZ-FXE+Motor
Engine Number of Cylinders
4
Problems:
Oil consumption
The 1NZ-FXE engine in the 2003 Toyota Prius is known for oil consumption issues, especially as the vehicle ages and accrues higher mileage.
Hybrid battery failure
The hybrid battery in older Prius models, including the 2003, can degrade over time and may eventually need replacement.
Inverter coolant pump failure
The inverter coolant pump, which cools the hybrid system, can fail and may need replacement to maintain proper hybrid system function.
Egr valve problems
The Exhaust Gas Recirculation (EGR) valve can become clogged, leading to poor engine performance and increased emissions.
Head gasket issues
The 1NZ-FXE engine is prone to head gasket failure, which can cause coolant leaks and engine overheating.
Water pump failure
Water pumps in older Toyota Prius models can fail, leading to engine overheating if not replaced in time.
Catalytic converter theft
The catalytic converters in Prius models are a common target for theft due to the precious metals they contain.
Transmission issues
The continuously variable transmission (CVT) used in the Prius can develop issues over time, such as excessive noise or failure.