6: Infiniti G20
Is it possible to mess up a compact luxury sedan? Yes, it is – just ask Infiniti. The automotive brand messed up the G20. The compact G20 had an excellent design and a lot going for it, but the performance was lethargic. Nissan threw the worst engine they could into the G20, and consumers responded negatively (via Autoweek).
Given the fact that the G20 was competing head-on against the BMW 3-Series, there was no reason for it to be lacking in performance. Reliability was also shoddy, with the G20 suffering from transmission issues early on. The redesigned G20 that arrived in 1999 was no better, and the sales were some of the worst the brand has witnessed.