Increased fuel consumption
- The air filter element is dirty.
- Low pressure in car tires.
- On models with gasoline engines with a carburetor, the throttle mechanism is faulty or incorrectly adjusted, or the throttle of the fuel cut-off valve is faulty.
- On models with gasoline engines, the fuel injection system is faulty.
- On models with diesel engines, the fuel injectors are faulty.
- On models with gasoline engines, the ignition timing is incorrectly adjusted.
Fuel leaks or persistent fuel smell
- Damaged or corroded fuel tank, fuel pipes or their connections.
Noisy exhaust system
- Breakthrough of gases from the exhaust system or exhaust system connections.
- Damaged or corroded parts of the exhaust system.
- Damage to the suspension elements of the exhaust system, resulting in contact between the exhaust system and the body.