EXCESSIVE OIL CONSUMPTION

Excessive oil consumption has been reported on turbocharged engines. What is considered excessive is when the engine consumes more oil than the expected mile range considered normal. Most engines recommend oil change for every 5,000 to 10,000 miles traveled to keep the engine performance efficient. However, Audi A5 drivers find themselves topping oil more frequently than usual. Audi reported a thin factory as the cause of the oil leak. Changing this piston with a Generation 1 seems to solve the issue.

FAULTY IGNITION COIL

Ignition coils are responsible for turning low-voltage to high voltage to generate enough spark for combustion. A fault ignition coil will cause the engine to misfire for the affected cylinder. If more than one ignition coil is faulty, the car may fail to start. In addition, failed ignition coil soon triggers the check engine warning light and will throw annoying codes. Another symptom of a failing ignition coil is decreased acceleration or engine performance. If more than one coil fails, you could get a reduced performance when you press the acceleration pedal for your A5.

ENGINE COOLING SYSTEM FAILURE

Another major issue with the Audi A5 is engine cooling failure. It usually affects the water pump and thermostats. The water pump helps to supply coolant from the radiator to the car’s engine, while the thermostat recirculates the coolants from the radiator to the engine and again. Many Audi A5 have a plastic water pump impeller prone to crack and damage. It is better to get it changed to a metal impeller instead. If either of the water pump or thermostats gets faulty, it increases the chances of your car engine overheating.

DEFECTIVE TIMING CHAIN AND TENSIONER

This defect is a common issue was very common with the Audi A5 engine. Most times, a defective tensioner could cause the timing chain to slip off or burst, resulting in engine failure. The tensioner helps to keep the timing chain optimally placed to avoid slippage or break in the chain. Failure of the tensioner could result in costly damage to the engine. The Audi A4 timing chain, factory supplied by Volkswagen, is supposed to be a lifetime chain in the 2.0T engine. However, a weak tensioner may cause rough engine performance and condemn the engine. It may be a good idea to replace the tensioner before the damage is done.

AIRBAG ISSUES

Airbag issues have been a massive issue in some Audi A5 models, especially those with Takata’s inflator. The Takata inflator used ammonium nitrate to inflate the airbag during a crash. But the nitrate has been reported to be unstable, especially when exposed to a high temperature causing the airbags to explode. The affected models include the 2017-2018 Audi A5 models. Although later versions have resolved this issue., it is worth mentioning. Also, there were reports of faulty passenger detection sensors in Audi A5 and other models. Most Audi comes with this system to prevent airbags from deploying on the rear passenger side if no one is there. The sensor became too sensitive and malfunctioned, disabling the airbag even if a passenger was still seated.