Would you consider buying a used Audi A4? What are the most common problems with Audi A4 models? A summary of the most common issues with Audi A4 models …..
Audi, the German automaker has been launching its A4 flagship model since 1996. Some model years have common issues with the engines, despite being in the luxury and reliable category.
The 2009 Audi A4 had the most complaints. However the 2011 Audi A4 was the worst model in terms cost of repair at lower mileage.
It is best to avoid models years 2011, 2009 and 2010, 2008, 2006, 2007 and 2007. Most people complain about these models because the engine burns oil. These faults can also be caused by timing chain tensioner problems.
Audi A4 Excessive Oil Consumption Problem
Excessive oil consumption is a common problem in almost all Audi A4 models. This problem is particularly prevalent in models from 2008, 2009, 2010, and 2011. This problem is most common in 2008, 2009, 2010 and 2011 model years. It requires serious engine expenses.
Some drivers every 1500-3000 km. Audi was sued in 2012 for this problem. Audi initially thought the problem was caused due to problems with the pistons, rings and oil. The problem was then fixed by a software upgrade. He recalled his vehicles after the class action was over and extended his warranty.
Audi A4 B8 water pump malfunctions
The Audi A4 B8s water pump is the most susceptible and likely to fail. The original water pump used plastic and not aluminum. The plastic casing cracks and the water pump becomes more susceptible to high temperatures. This causes coolant to leak and pumps to fail.
The gasket between your thermostat and water pump is also a potential failure point. Over time, gaskets wear and become brittle. Fluid leakage causes seals to fail faster. About 150,000 km. It is mandatory that a vehicle has driven it at least twice.
Water pump failure in the 2.0L engine A4s 2009-2014 has been the subject of class-action lawsuits. For model years 2013 to 2016, a recall was issued. A plastic water pump should be replaced with an aluminum model. Aluminum is stronger than plastic and will last longer.
Audi A4 Injector Faults
Fuel injectors can get dirty, clogged, or leak over time. Insufficient fuel is injected into cylinders if the injector becomes blocked. Injectors can fail individually. It is not unusual for them all to fail simultaneously. But even one defective injector can lead to significant engine performance loss and problems.
A malfunctioning injector could be on or off. This can lead to it not delivering fuel or sprinkling too much fuel into your cylinder. This can cause misfires. You may have an injector problem if your vehicle is having trouble starting, idling irregularities or losing power. These symptoms can be caused by faulty spark plugs or ignition coils as well as a broken water pump. Also, you can check out:
Audi A4 Power Steering Hose Defective
Some A4 owners have complained about wobble and vibration at high or low speeds. Audi determined that this issue is due to a faulty power steering line. This problem seems to be more prevalent in those who brake frequently.
This problem is more common in early B8 models. Audi has issued a Technical Service Bulletin, (TSB), to address this problem.
Carbon Formation in Audi A4 Intake Valve
Inline engine fuel is delivered to combustion chambers through the intake valves. The intake valves are subject to a constant high-pressure fuel flow. These valves are always clean.
Audi engines all use direct injection technology. Direct injection technology allows fuel to be injected directly into the combustion chamber using the injectors. The valves do not allow fuel to flow. Intake valves are formed by the combustion and recoiling fuel. The carbon deposits cause a decrease in airflow. This reduces engine power, idle instability, engine misfires, and engine power loss.
Carbon cleaning is the best way to eliminate these problems. Carbon cleaning should be done every 80-100 000 kilometers.
