I bought a certified pre-owned 2000 Passat at 74,600 miles, and it's about time for the 80,000 mile service. It's a big one, the dealership said it would cost over $400. But then i started wondering, the certified pre-owned vehicles go through a pretty rigorous inspection. Is it possible that most of what would be done at the 80,000 mile service was done in this inspection, just 5,000 miles ago? Anyone know anythig about this? Thanks.