When considering which BMW 7 Series years to avoid, it's essential to pay attention to specific model generations and associated issues. For instance, some enthusiasts recommend caution with the early years of the fifth-generation (2002-2008) 7 Series, primarily due to electronic gremlins and complexities related to the iDrive system, which was relatively new at the time. Additionally, models from the early years of the fourth-generation (1994-2001) might pose concerns related to electrical glitches and expensive repairs. However, it's important to note that individual experiences with these vehicles can vary greatly based on maintenance history and driving conditions. Therefore, thorough research and inspections are crucial when considering any used BMW 7 Series, especially those from potentially problematic years.