The 9-5 OG was established by 1999 with the 2.0t and 2.3t turbo engines and Saab's legendary seats. However, oil sludge from the flawed PCV design was beginning to destroy engines, and the B205/B235 engines were particularly vulnerable. Cars with documented sump drops and the PCV update kit are essential buys.
Identical issue to the 9-3 OG; the 9-5 is actually more prone to this due to higher engine bay temperatures.
Turbo failure, Tapping noise from top end, Oil light flicker
All 9-5 engines use a turbocharger, and lack of maintenance or oil sludge can cause premature turbo bearing failure. A blown turbo can send oil into the intake or exhaust, causing smoke and potential engine damage.
White/blue smoke from exhaust, Sudden loss of power, Whistling or siren noise from engine bay, Oil consumption increase
The timing chains on B205/B235 engines can stretch and rattle, especially on cold start. If the chain tensioner fails, the chain can skip teeth and cause valve-piston contact.
Rattling noise on cold start, Engine management light, Poor idle quality
Worn rear bushes lead to poor tracking and high tyre wear.
"Ghost steering" from the rear, Knocking over speed bumps
The plastic arm or shaft for the heater blend door snaps, leaving one side of the car at the wrong temperature.
Fault code 08 or 11 on ACC display, Inconsistent cabin temperature