IsItAGoodCar
Reliability Guide

Common Problems with the
1998–2000 Saab 900 NG / 9-3 OG

We've identified 3 known issues that can affect the 1998–2000 Saab 900 NG / 9-3 OG. 2 of these are serious faults that could be expensive to repair.

3
Known Issues
2
Serious
1
Moderate
0
Minor

All Known Issues

Engine Oil Sludge (B205/B235)

SeriousEngine

Poor PCV design and long service intervals lead to oil breaking down and blocking the oil pickup strainer.

Est. Repair Cost: £300–£2,500
Warning Signs:

Oil pressure light (too late!), Turbo smoke, Engine rattle

What to Inspect:
  • Ask if the sump has been dropped and cleaned
  • Check for the latest PCV breather update
  • Pull the valve cover to inspect for carbon buildup
Verified by IsItAGoodCar Research Team

Bulkhead Cracking

SeriousSuspension & Chassis

The firewall where the steering rack is mounted can crack, leading to dangerous steering flex.

Est. Repair Cost: £400–£800
Warning Signs:

Creaking when steering at low speed, Vague handling, Visible movement of the rack

What to Inspect:
  • Inspect the area behind the brake booster for cracks
  • Test steering weight while stationary
Verified by IsItAGoodCar Research Team

Direct Ignition (DI) Cassette Failure

ModerateEngine

The all-in-one ignition module fails due to heat and internal component aging.

Est. Repair Cost: £250–£350
Warning Signs:

Non-start, Misfiring under load, Acrid burning smell

What to Inspect:
  • Look for "SEM" branding on the cassette
  • Avoid cars with cheap unbranded modules
Verified by IsItAGoodCar Research Team

Buying Tips for 1998–2000 Saab 900 NG / 9-3 OG

  • ✓The biggest killer is "oil sludge" on B205 engines; insist on proof that the sump has been dropped and cleaned.
  • ✓Check the bulkhead (firewall) for cracking around the steering rack mount, a notorious structural flaw that causes vague steering.
  • ✓Inspect the Direct Ignition (DI) cassette; if the car misfires or struggles to start, this red or black module on top of the engine is likely failing.
  • ✓Test the convertible roof (if applicable) for smooth operation; the hydraulic cylinders are prone to leaking fluid.
  • ✓Check the SID (Saab Information Display) on the dashboard for missing pixels, a very common and annoying fault.
  • ✓Ensure the heater blows both hot and cold; the blend door stepper motors frequently break.
1994–19972001–2002
Check a 1998–2000 Saab 900 NG / 9-3 OG by Registration