What's the likelihood of the infamous LDU failure (coolant leak)? when does it fail?

Pitiful_Sandwich_223 | 2026-02-16 03:07 | 22 views

Hello everyone, I was wondering what's the probability of the LDU failure? I know it's hard to give a number, and I know that they almost certainly break. Do they usually break at 50K miles, 100K miles, or 120 or more? What's your experience? Thanks! Planning on buying a 2017 p100d at 120K miles, and trying to figure out the risk. Thanks a lot

Comments (2)

Fragrant-Ice-5921 2026-02-16 03:49

With 120k miles, it’s almost guaranteed that it’s on its 2nd or 3rd LDU. It’s not a matter of if it will break, but when.

chmod-77 2026-02-16 14:20

I drove a 2015 S85 from 85,000 to 183,000(?) miles and never had an issue.

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