4: Lincoln Aviator
The SUV boom was in full swing by the early 2000s and the Ford Aviator was an interesting concept. Lincoln had hit a home run with the Navigator a few years earlier but the Aviator was not as well received. Based on the Ford Explorer the Aviator was undersized and had a full-size price tag, which didn’t sit well with luxury buyers.
One cool feature about the Aviator was the fact that the SUV shared its powertrain with the Mustang Mach-1. Performance was more than you’d expect for an SUV of this size, but that wasn’t enough to bolster sales. The Aviator is perhaps one of the poorest selling Lincoln models in recent time and that isn’t a good thing.