No compression in one cylinder

2014 AUDI A5

48,000 MILES

AUDIDRIVER

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My vehicle started running rough on Sunday, and the EPC light came on. I took the car to the Audi dealership early Monday morning, and was told that afternoon that I need a new engine: $12.5000. Does the entire engine automatically need to be replaced for lost compression in one cylinder? How can it be that the engine is totally blown without even some indicator lights warning of an issue?

I just received a safety recall notice saying EPC light can mean the coolant pump is blocked. When I asked about this, Audi said it was just coincidental. Is it reasonable to think they might be connected? I do not currently have a copy of the diagnostic report but have requested it and will get it today.

The vehicle is meticulously maintained. The warranty does not apply as the car is just over four years although under mileage. I would appreciate any advice to help me work through this issue.

Jun 20, 2018 at 8:27 AM

JACOBANDNICKOLAS

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Hi and thanks for using 2CarPros.com.

Before I would allow them to replace the engine, I would contact the Audi Zone office for your area and demand some assistance since the vehicle was maintained by the book. If the work was done at a dealership, that is more power in your pocket.

As far as your question, it is hard to tell what actually happened to cause low compression in one of the cylinders. Low compression can only be the result of a few things; rings, valves, head gasket. Here is a link that discusses the possible issues:

https://www.2carpros.com/articles/the-reasons-for-low-compression

Read through that link and it will discuss causes. Now, does that mean the engine needs replaced? Usually not. Especially on such a low mileage vehicle and one that was not abused.

Do me a favor, get the report from the dealership and let me know exactly what they said is the problem. I can then better guide you on ways of repair. Also, I have owned Audi vehicles for years. Never have I gotten less than 200,000 out of one. That is why I feel if you complain to an Audi rep, you will get assistance.

Honestly, I need to know about the compression loss in the one cylinder. If possible, let me know what compression for all four cylinders is. As far as the Electronic Power Control (EPC) issue, it controls many things.

I looked up Audi Customer Assistance and found this. I feel it would be a good place to start.

(800) 822-2834
(800) 822-AUDI
Monday-Friday, 8am – 9pm (EST)
Saturday, 10am – 7pm (EST)

I hope this helps and let me know if you have any questions.

Take care,
Joe

Jun 21, 2018 at 6:52 PM