2: BMW Z4 Roadster
Another product of the 2000s, the Z4 roadster, was the next generation of the Z3. The problem is that, like most BMWs from this era, the Z4 had several electrical problems. These electrical issues can cost thousands of dollars to repair. Most consumers weren’t willing to go that far in their ownership of the Z4, and thus the car has lackluster resale value (via BMW).
The performance of the Z4 roadster was also not that impressive, especially with all the competition. Another drawback to the Z4 was the bland styling the car had, which was true for most BMWs from this era. All in all, the Z4 was a black mark in the lineage of otherwise solid BMW roadsters.