Pre-Owned: 1992-2006 Hummer H1

So here's the deal: This capsule description makes the H1 sound like a lot of large SUVs from the major manufacturers, all of which you might be able to buy used without much research into model changes, updates, and so on. Not with the H1. This is a specialized machine, much unlike the big GM 'utes that, for the most part, underpin the H2. The all-wheel-drive system is complex and durable, but there are plenty of reports of failures due to abuse and lack of maintenance. H1s also have some military-spec systems you won't see elsewhere, like the pricey and optional central tire inflation system.

There are scores of upgrades and updates for the H1 concerning many systems on the vehicle. Spend some time researching the specifics of any model-year vehicle you're considering and carefully determine if it has the desired upgrades you want. Moreover, there's no sitting down on maintenance. While owners cite no outrageous difficulties, it's clear that this is a unique machine that requires knowledgeable service. Unless, of course, you have the Army's maintenance budget.