Just replaced the water pump on my 2010 A4 Quattro. Got it done in about 4 hours which I think is pretty good considering I've never replaced a water pump before.
2017 A4 Prestige about to go over 90k miles. Only real repairs so far are water pump and breather hose if you don’t consider that maintenance.
Took it to my trusted mechanic, and it was the water pump. These water pumps fail every 60,000 miles (or 100,000 km for your UOM). I got mine replaced at 35k miles first, and it failed at 94k, so it adds up.
2015 B9 A4 3.0TDI. Almost at 200k. Original waterpump and no issue in sight.
In my case the leaking was from the plastic water pump housing which is a common fault for this engine. I replaced the plastic water pump with GRAF PA1359, which is metal housing instead of the OEM plastic one.
Had my water pump replaced around 50,000 miles in my 2017 A4 2.0t. Other than that, the car has been rock solid.
I ended up keeping the gates kit, I've put about 8k miles on it so far.
My b9 has had 0 problems except water pump, 110k
Once I removed the thermostat, I felt in the port and although the impeller felt ok, it spun freely; not smooth like a bearing but rough like it was dragging. Since I was able to freely turn the impeller through the thermostat hole, I have to assume my water pump is failed.
I got lucky and found out my VIN was part of the class action lawsuit for water pumps, got that replaced for free.
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