thinking about buying a Buick Riviera. My concern is that if it breaks down would any shop be able to fix and expensive big hassle trying find parts for it?

You're right to be concerned about parts availability and repair for an older Buick Riviera, especially depending on the model year. The difficulty varies greatly:

* Newer Rivieras (late 80s - early 90s): These are relatively easier to work on. Many parts are still available through online retailers or salvage yards. While not as common as parts for mass-market cars, finding mechanics familiar with GM vehicles of that era should be less of a problem.

* Older Rivieras (pre-80s, especially the classic models): This is where it gets significantly harder. Parts are becoming increasingly scarce and expensive. Specialized shops that specialize in classic car restoration or Buick repair will likely be needed, and finding them might involve some searching. Expect higher labor costs due to the specialized work required. Many parts might need to be sourced from specialized suppliers, classic car parts dealers, or even junkyards. Fabrication might become necessary for some parts.

In short: Before buying any older Riviera, especially a classic model, thoroughly research the specific year and model you're considering. Look into local resources for potential repair shops and parts availability *before* making a purchase.

Here's what you should do:

1. Identify the year and model: The specific year will drastically affect parts availability.

2. Check online parts suppliers: Search for common parts for that specific year and model on sites like eBay, RockAuto, and classic car parts suppliers. Look at the availability and price.

3. Find local mechanics: Call some local garages and ask if they have experience working on older Buicks. Ask about their familiarity with that specific model year.

4. Check local Buick clubs or forums: Owners' clubs often have resources and recommendations for repair shops and parts suppliers.

5. Consider a pre-purchase inspection: Have a qualified mechanic inspect the car before you buy it. This can help identify potential problems and save you from a costly repair nightmare later.

Buying a classic car is a commitment. Be prepared for the possibility of higher maintenance costs and potential challenges in finding parts and qualified mechanics. The more research you do upfront, the better prepared you'll be.