I brought my 2021 Audi Q5 to the Shell station on P St in Dupont Circle after it developed a severe coolant leak. I was understandably concerned because coolant was pouring out from underneath the vehicle.
T.J. (the lead mechanic) charged me $168 for a diagnosis and told me that the water pump had failed. I was specifically told that the cooling system had been pressure-tested and that the water pump was the source of the leak. Based on that diagnosis, I was advised not to drive the car and ultimately had to arrange for the vehicle to be transported to Audi.
Audi Annapolis subsequently inspected the vehicle and determined that the water pump was not the problem. The actual failure was a faulty pressure-release valve in the coolant reservoir cap -- a $33 part. The Audi technician showed me a video of the faulty cap and the subsequent pressure test demonstrating that the system held pressure after the cap was replaced.
The car has been running perfectly since.
The incorrect diagnosis cost me not only the $168 diagnostic fee, but also roughly another $400 in towing, transportation, and additional diagnostic/repair costs that would not have been necessary had the problem been correctly identified in the first place.
Mistakes happen, but telling a customer that a component has been identified through a pressure test when it turns out not to be the source of the leak is a serious concern. I would have been much more understanding if I had simply been told that the water pump was a suspicion rather than a confirmed diagnosis.
$33 cap. $168 diagnosis. $400+ additional expense.
I would strongly recommend getting a second opinion before authorizing any significant repair based on a diagnosis from this shop. read more