21. BMW 318ti
The idea behind BMW 318ti was pretty straightforward, and it should’ve worked, but somehow it didn’t. In 1995, BMW introduced its E36 3-Series Compact model to US buyers to present a premium compact car perfect for an emerging market (via BMW Blog).

The 318ti had classic BMW features and performance. Yet somehow it sold far less than anyone expected. US buyers didn’t even consider buying this version of 3-Series. The sedan, coupe, and convertible proved to be far more popular. The 318ti was on the market for just a couple of years, selling around 10.000 examples in total.