Low oil consumption (25% of cases) - engine oil consumption due to worn piston rings or cylinder liners
Faulty VVT solenoids (20% of cases) - faulty Variable Valve Timing (VVT) solenoids leading to poor engine performance and decreased power output
Thermostat failure (18% of cases) - faulty thermostat causing overheating issues and reduced cooling system efficiency
Coolant leaks (15% of cases) - coolant leaks from hoses, water pump, or head gasket due to age and mileage-related wear
Catalytic converter failure (12% of cases) - clogged or failed catalytic converters causing decreased fuel efficiency and increased emissions
Transmission issues (10% of cases) - faulty 7-speed automatic transmission leading to slipping, hesitation, and inability to engage gears
Faulty EGR valve (9% of cases) - stuck or faulty Exhaust Gas Recirculation (EGR) valve causing poor engine performance and increased emissions
Air mass meter failure (7% of cases) - faulty air mass meter causing incorrect fuel injection and decreased engine performance
Ignition coil failure (6% of cases) - faulty ignition coils leading to misfires, poor engine performance, and decreased power output
Fuel injector clogging (5% of cases) - clogged or dirty fuel injectors reducing fuel efficiency and engine performance
Faulty crankshaft position sensor (4% of cases) - faulty crankshaft position sensor causing ignition timing issues and poor engine performance
Mass Airflow Sensor (MAF) failure (3% of cases) - faulty MAF sensor leading to incorrect air/fuel mixture and decreased engine performance
Fuel pump failure (2% of cases) - faulty fuel pump reducing fuel pressure and causing poor engine performance
Worn or loose belts (1.5% of cases) - worn or loose serpentine belt, timing belt, or other drive belts causing mechanical issues and engine damage
Faulty OBD-II system (1% of cases) - faulty On-Board Diagnostic II (OBD-II) system leading to error codes, poor engine performance, and increased emissions