All work is documented, whether done by the dealer or myself.

My log is a simple Excel spreadsheet, with columns for date, mileage, cost, and what was done.

In a paper file folder for each vehicle I have the original purchase documents, all repair orders, and parts sales orders for any parts purchased and installed by me.

Some prospective purchasers have looked at the file and been very interested. It helped complete the sale. Others looked at it and couldn't care less, but I do it for myself, not for them.

The history files cover every car I have purchased from 1986 (the occasion of the purchase of my first new vehicle after ten years of only owning used vehicles)

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2007 X3 3.0si, 6 MT, Premium, White

Retired:
2008 535i, 6 MT, M Sport, Premium, Space Grey
2003 X5 3.0 Steptronic, Premium, Titanium Silver
2002 325xi 5 MT, Steel Grey
2004 Z4 3.0 Premium, Sport, SMG, Maldives Blue