Was wondering how long the voltage regulators on our cars tend to last....and whether at a certain point it makes sense to replace them "just because." On my 99, the PO replaced the alternator at 120k miles....now has 163k so I'm fine on that car. But on my 98, I'm pretty sure it's original alternator and VR at 90k miles.

So, those of you have have found a voltage regulator beginning to fail, around what mileage was that?

Thanks.

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14 E250 Bluetec 4Matic "Sinclair", Palladium Silver on Black, 161k miles
06 E320 CDI "Rutherford", Black on Tan, 180k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver on Tan, 147k mi, wastegate conversion, ALDA delete

19 Honda CR-V EX 81k mi
Fourteen other MB's owned and sold
1961 Very Tolerant Wife