Generally speaking:
* Early Bonnevilles (1950s-1970s): These are often considered classic cars, prized for their styling and powerful engines. However, they are old technology, requiring significant maintenance and parts can be expensive and difficult to find. Reliability is generally low unless meticulously maintained.
* Mid-era Bonnevilles (1980s-mid 1990s): These represent a transition period. Some models were reasonably reliable, but others suffered from various issues depending on the year and specific engine/transmission combinations. Parts availability is still relatively good.
* Late-era Bonnevilles (late 1990s-2005): These often had more modern features and generally better reliability compared to their earlier counterparts. However, even these can experience issues with various components as they age. Parts availability is becoming more limited as these cars get older.
Common Issues (across generations, but severity varies):
* Electrical Problems: Pontiacs of this era are notorious for electrical gremlins. This can range from minor annoyances to major failures.
* Transmission Problems: Automatic transmissions could be a source of trouble in some models.
* Suspension Issues: Wear and tear on the suspension system is common, especially on older models.
* Engine Issues: While generally robust, specific engines in certain years had known problems (e.g., certain V6s and V8s).
In short: If you're considering a Bonneville, carefully research the specific year and model. A well-maintained example of a later-generation Bonneville *can* be a reliable and enjoyable car, but be prepared for potential repairs and maintenance costs, especially with older models. A pre-purchase inspection by a mechanic is highly recommended.
