Porsche 944
The Porsche 944 was the most underrated Porsche of all time. Its hatchback styling was different than nearly every Porsche that came before it. But the addition of a V8 engine made the 944 a novelty compared to the Porsches that came before it (via Hot Cars).
A fairly common car, the 944 only weighed about 2600 LBS. The lightweight platform of the car made it accelerate a lot faster than comparable sports cars. Although the 944 didn’t garner the loyalty that other Porsche models did at the time, it was a decent car that was fun to drive.