Based on the Jalopnik article. Thought there would be some interesting responses here.
What's The Most Unreliable Car You've Ever Owned?
For me it was a 2003 BMW X5 4.4i. It's like they put a timer in the car. Flawless through the warranty period then all hell broke loose at 50,001 miles to 75,000 miles spanning 2 years when I finally dumped it.
The front CV boots would tear if you turned the wheel to lock at any speed. Had to replace the 3 of them in two years. The intake gasket broke causing the engine to gulp coolant. Every third day a new pixel would die in either the instrument cluster or radio. The interior door handle broke off, flimsy plastic fatigue. I had 4.6 IS wheels that would wear unevenly, last only 20,000 miles. BMW dealer said that's how they were, the rear-end especially is designed that way and could not be corrected. 2 window motors failed. Both tail light housings failed and I would still on occasion get failed rear bulb messages. The final straw was the climate control system going insane. Full cold on driver's, full hot on passenger, and surging up and down blower motor.
While it never left me stranded, it was more of a death of 1000 cuts. The car that left me on the side of the road most was a vapor locking 1989 Jeep Grand Wagoneer.