Increased fuel consumption
- The air filter element is dirty.
- Low tire pressure in the car.
- On models with petrol engines with a carburetor, the throttle mechanism is faulty or incorrectly adjusted, or the fuel shut-off valve flap is faulty.
- On models with petrol engines, the fuel injection system is faulty.
- On models with diesel engines, the fuel injectors are faulty.
- On models with petrol engines, the ignition timing is incorrectly adjusted.
Fuel leaks or persistent smell of fuel
- The fuel tank, fuel lines or their connections are damaged or corroded.
Noisy exhaust system
- Blow-off of gases from the exhaust system or exhaust system connections.
- Damage or corrosion of exhaust system components.
- Damage to the suspension elements of the exhaust system, resulting in contact between the exhaust system and the body.