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Re: Best year Z06?
In general, the model year that's just before the *last* year of production tends to be the "best". It'll have all the "fixes" for the previous year's issues, and might include the benefit of additional "enhancements" or refreshes GM might have done to keep the model selling well. You don't want the last year's production. The costs of the many tools required to make the car are high. GM wants to amortize those costs over as many cars as they can. They "time it" so that the last tool they ever have to buy lasts until the last car is built (they don't want a tool good for 10K parts to still have 5K of life left when the last car rolls off the line - that's wasted money). But tools don't just suddenly go bad, the slowly wear and tolerances get progressively looser until they're deemed unacceptable and replaced. The last parts that come off the tool are generally the poorest quality (doesn't mean they're "bad", only that they're not as good as the "best").
You don't want the last year production of a car. The temptation to minimize scrap often invites compromises in quality that would not have been deemed acceptable at the start of the production run.
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