[Killerfish2012]

Hello all, my wife drives a 2011 X3 with 58K miles on the clock. I'm wondering if you guys/gals have any input on the water pump longevity? It looks like a stand alone electric water pump design, similar to what's in my 335I. The 335I's water pump was good for 75K miles. They all failed in that range. Wondering what to expect with this car.

[najnad]

same rules apply for the x3 35i as the 335...at least for the electric water pump.

[ThomasR]

Originally Posted by najnad

same rules apply for the x3 35i as the 335...at least for the electric water pump.

I disagree. I talked to my good friend and long time BMW tech advisor just last week about this. He said that he had not seen ANY N55 water pump failures as they were redesigned from the N54 days. He said the N54's all go way before 100k.

[96_Impreza]

Our bought-new 2011 X3 35i OEM water pump is at 105K miles.

[Tjalle]

It´s no reason - and not common - for waterpumps to last only 75k miles.

Supplier screw up!

New supplier or just new/modified design - with heavy control from BMW.

[Barbera335]

My 2011 with 90k miles still has the original waterpump as well.

[najnad]

I replaced my waterpump on my 2011 X3 35i around 100k...would rather replace it preventatively than have it fail and leave me stranded. I do like to gamble, just not with my engine.

[doru]

Originally Posted by ThomasR

I disagree. I talked to my good friend and long time BMW tech advisor just last week about this. He said that he had not seen ANY N55 water pump failures as they were redesigned from the N54 days. He said the N54's all go way before 100k.

It's the same p/n for N54 & N55.
Maybe redesigned, but then it's redesigned for both as they share same p/n.
Sh1tty design nonetheless any way you slice it. It's ok to have cooling according to engine load, but not cool to have it fail out of the blue, being a royal PITA to replace it and costing how much? I really like the simplicity of belt driven WP from operation to replacing to cost.

[///Mposter]

Can?t remember exact mileage but it was in the 50?s . Was on the way to a wedding and it pooped out a mile from the exit. Yellow, then red, no power. No warning before that day and time.

[greg2step]

mine started acting up 56 or 57k - happened a few times then had it replaced - 2011 35i

for the 35i expect a few oil leaks to follow

[ThomasR]

Originally Posted by greg2step

mine started acting up 56 or 57k - happened a few times then had it replaced - 2011 35i

for the 35i expect a few oil leaks to follow

2015 35i 70k still on original.

[woodchuck1]

Originally Posted by Killerfish2012

Hello all, my wife drives a 2011 X3 with 58K miles on the clock. I'm wondering if you guys/gals have any input on the water pump longevity? It looks like a stand alone electric water pump design, similar to what's in my 335I. The 335I's water pump was good for 75K miles. They all failed in that range. Wondering what to expect with this car.

2013 X3 35i - Our water pump failed at around 100,000 miles. Replacement cost was $1800. Be warned.

[gareth12468]

I still have the original water pump on my 130k+ 2011 28i

[Killerfish2012]

Originally Posted by gareth12468

I still have the original water pump on my 130k+ 2011 28i

You have the N52 like me. Wonder if it's a bit more durable on these engines?

[woodchuck1]

BMW has gone with a traditional mechanical water pump on the new 6 cylinder engine (B58?) that has replaced the N55. I take that as sort of an admission of guilt ;-)

[doru]

Originally Posted by woodchuck1

BMW has gone with a traditional mechanical water pump on the new 6 cylinder engine (B58?) that has replaced the N55. I take that as sort of an admission of guilt ;-)

Correct. But the oil pump is changed to an electronically driven pump (similar to the electronically driven WP on N54/55 engines) as opposed to chain diven. Hope they don't go bust that soon. The old school chain driven oil pumps lasted the life of the car (usually)

[BIG_KID]

Originally Posted by Killerfish2012

You have the N52 like me. Wonder if it's a bit more durable on these engines?

Aren't the water pumps different between the N52/N55

[ThomasR]

Originally Posted by woodchuck1

2013 X3 35i - Our water pump failed at around 100,000 miles. Replacement cost was $1800. Be warned.

I've got platinum warranty until 100k. I've done a water pump and thermostat on my wife's N54 335i a couple of years ago. DIY is only about $400-500. It wasn't fun but it's not that bad. Changing the valvecover gasket is worse.

[woodchuck1]

Originally Posted by ThomasR

I've got platinum warranty until 100k. I've done a water pump and thermostat on my wife's N54 335i a couple of years ago. DIY is only about $400-500. It wasn't fun but it's not that bad. Changing the valvecover gasket is worse.

I looked at it with the thought of doing it myself, but it looked like a nightmare of a job to me. I could hardly get a finger on it.

[Fast4d]

I have an 100k miles N52 on the original water pump. I'm waiting till coolant to expire then do the water pump and thermo.

[dimeo187]

'12 35i in the shop now @32k.

[Killerfish2012]

Originally Posted by doru

Correct. But the oil pump is changed to an electronically driven pump (similar to the electronically driven WP on N54/55 engines) as opposed to chain diven. Hope they don't go bust that soon. The old school chain driven oil pumps lasted the life of the car (usually)