20. Maserati BiTurbo
The BiTurbo lineup of cars started with the 222. It was a handsome two-door coupe and continued with the 420 and 430 sedans. The BiTurbos were meant to be entry-level Maseratis at more affordable prices than expected. Under the hood was a new generation of turbocharged 2.0-liter and 2.5-liter V6 engines. They came with high power outputs from 180 HP all the way to 270 HP in later years.
The BiTurbo generation, however, was infamous for a lack of reliability. The cars were prone to all kinds of mechanical issues. Maserati made over 40,000 BiTurbos in a 13-year period. But due to the poor quality, just a small fraction of them are still on the road.