18: 2002 Volvo V40
The Volvo V4 was an attempt to create a smaller and sportier wagon model. The problem is that most people didn’t want a station wagon, no matter how hard Volvo tried to market it. So the V40 never sold well. There were also many issues related to the reliability of the wagon (via Forbes).
The V40 couldn’t compete with the larger Volvo wagon. The result was a car that never lived up to the hype. The V40 was discontinued a few years after it was released after never quite catching on with consumers.