general problems of the 2001 SAAB 95

Turbo malfunction at a cost of $455. 00 and also engine filter box. Vehicle still not running correctly. Will only go at speed of 25 mph. Repaired on 03/27/2018. Started out smoking all over the place from exhaust. Was told turbo went bad. I think a lot of these cars have this problem as I read on forums(SAAB,). That I have since joined. The SAAB has 139,000 miles. . I was driving on a city street at speed around 35mph. Started to smoke heavy,but once out of city as long as I drove 50 mph on highway smoke was dispersed from wind and made it home but when stopping for red light would buck and try to shut off. Smoke not good for environment. . . . . .