Water pump OEM Audi or OEM BMW

This time the shop foreman went through the car soup to nuts again, replaced a fuel rail connector, and the water pump.

2015 B9 A4 3.0TDI. Almost at 200k. Original waterpump and no issue in sight.

Audi made it right by making the oem water pump replacement aluminum, not plastic smh.

I bought a 2017 S3 with 40k kms, best car I’ve owned so far, had to replace the water pump but I swear the OEM one is made of cardboard. No more expensive than any other car to service.

Water pump went out on two of mine around 100k.

My b9 has had 0 problems except water pump, 110k

Just happened on my rs6 a few months ago. Dealership even had the part in stock because this is common enough. 2 days in the shop. Had to have the car towed. Engine temp would climb evey time I hit the gas.

2019 Audi Q8 water pump failed around 80k miles. After looking into it, I found out Audi originally used a 4-bolt water pump and pulley design on these engines. The problem with the 4-bolt setup is that it didn’t distribute load evenly. Over time this caused premature wear on the shaft and bearings, which led to leaks and pump failures much earlier than expected. Audi must have known it was an issue because they stopped producing the 4-bolt pump and redesigned it with a 6-bolt system that spreads the load better and holds up longer. This wasn’t just normal wear—it was a weak design from the start.

The water pump had a micro leak that would spray coolant on the air box. Never enough to make me want to go through the trouble of replacing it.

My Audi s5 back then had the v8, and around 43-45000 mi I had to swap mine out