5: BMW E65
The BMW E65 is considered one of the worst BMWs ever made. It’s not because of a lack of power, as the car drives well when it’s still on the road. But the problem with the E65 is that you could rarely if ever keep it on the road. Dubbed one of the most repair-intensive vehicles of all time, the E65 was a mechanical nightmare (via BMW Blog).

Many of these problems had to do with the electrical components in the car. This generation of the 7-Series was groundbreaking in technology and design. However, the model also fell short in many aspects. Driving a used E65 is almost certainly a costly nightmare and one drivers should avoid.