One of the most frequently asked questions is about purchasing a used Saab 9-5 and what to look out for. This will be a work in progress but the goal is to make one comprehensive post with all information that can easily be understood by the average used car buyer.
Let's bundle our efforts so please add to this thread with any helpful information for a prospective Saab owner. There are other sources for this information but most is scattered in the forums or very long threads with bits of info here and there.
General
The first generation of the Saab 9-5 was made from 1998 to 2009 (1999 was the first year in North America). There were 2 major updates to the model line through the years and they are commonly known as 1999-2001, 2002-2005 and 2006-2009. For all differences and updates through the years, see this thread with more information: link
Equipment levels:
Linear: Base model with limited equipment.
Arc: More luxury and equipment, comfortable ride
Vector: Sportier version between Arc and Aero
Aero: The sport model with lower suspension, sport seats etc. Firmer ride
Transmission
- vibration in steering wheel on automatic trans/4-cylinder engines when in Drive and idling. Saab improved on this through the years. 2006 and up don't seem to have this problem anymore. It's not something to worry about on earlier models. Saab issued a TSB about Vibration at idling speed.
- automatic transmission is very reliable. Saab specified ATF changes of 100K miles/160K kms but reduced to 60K miles/100K km for the later model years. Besides ATF changes, no repairs or other maintenance are usually needed.
- manual transmission is reliable but clutch plates can wear out depending on the driving style. It's not the smoothest or quickest shifting transmission but many owners seem to like it.
Chassis
- Rear shocks usually need replacement sooner than front shocks and can start to leak at even lower mileage.
Interior
- On model year 1998-2003, the SID (Saab Information Display) above the audio unit can have missing pixels making it difficult to read the information on the display. There are companies who can repair these displays for not too much money. 2004-2005 has a different style of display and no problems have been reported with those.
- Check the fault codes for the ACC system. Push the AUTO and OFF button at the same time. It will either display a 0 or a combination of a single-digit and double-digit. Investigate further if anything other than a 0 is showing.
4-cyl petrol/gasoline engines
Model Year 1998-2003
Engine sludge is a big problem for the earlier Saab 9-5 model years. A combination of issues:
- long oil change intervals
- use of regular or semi-synthetic oil
- faulty crankcase ventilation system (PCV)
- catalytic converter right under the oil pan
The combination of all these factors caused engine sludge which can end the life of the 4-cylinder gasoline/petrol engine early. The sludge will slowly starve the engine of oil by clogging up oil passages in the engine/turbo and can also block the oil pickup tube in the oil pan.
These model years can still be a good buy but... you can reduce the risk of buying a 9-5 with engine problems:
- Make sure the car has service records with details about frequent oil changes. The frequency of oil changes is often debated but the average is about 5,000 miles/8,000 kilometers with full-synthetic oil. Saab specified 10K miles/16K kms for the earlier model years.
- Make sure the latest PCV update has been installed.
- Remove the valve cover or drop the oil pan/sump to physically check the inside of the engine. The condition under the valve cover may give you a hint but dropping the sump is the best way to check.
From model year 2004, all 9-5s have the latest PCV system. Full-synthetic oil was specified for the 2000-2003 Aero so those models are usually a safer buy when it comes to the sludge issue.
Turbos
Gasoline engines
- Garrett GT17 low-pressure turbo - 2.3t Linear and Arc models
- Mitsubishi TD04 high-output turbo - 2.3T Arc and Aero models
The Garrett GT17 seems to fail around 100K miles/160K kms. The turbo seals wear and cause oil to leak into the intake system. When this happens, there will be a puff of blue smoke from the exhaust on start-up when the car hasn't been driven for 12 hours or longer. It's still safe to drive the car but the turbo has to be replaced sooner rather than later. In the US, this can easily set you back $1,500 if replaced with a new turbo by a Saab dealer. Re-manufactured turbos for about $500 are an option. While it requires some mechanical skills, it is relatively easy to do this yourself.
The Mitsubishi TD04 turbo usually lasts much longer and 200k miles / 320K kms or more shouldn't be a problem for these turbos.
Ignition
Direct Ignition Cassette (DIC) wears over time and may need to be replaced very 60-80K miles or more. Cost is about $280 in the US.
Timing chain
The timing chain is reliable and often doesn't need attention for 150-200K miles. Check for rattling sounds indicating a worn chain, guides or tensioners.
V6 petrol/gasoline engines
Tuning possibilities are limited and the engine can be thirsty. 200hp is middle of the road for the 9-5 but provides for a relaxed cruiser and quiet/reliable engine.
There are no issues with sludge or head gaskets like the 4-cylinder engines.
Timing Belt
Replacement every 60,000 miles or 100.000 kms. Replace tensioner and idler pulley at the same time. This is an interference engine which means if the timing belt fails, pistons may hit the valves stuck in the open position. This can be a very expensive engine repair so make sure it is replaced when needed. Check the engine for any stickers mentioning the last replacement or check the maintenance records. It should be replaced if there are no records at all.
Turbos
The V6 has a GT15 low-pressure turbo which is part of the exhaust manifold. It's not necessarily difficult to replace but the cost of the turbo is higher than other models. Expect $600 for a rebuilt turbo and much more for a new one.
Diesel engines
Typical problems for the 3.0TiD ('01-'06 Isuzu) engine are the EGR valve and dropped cylinder liners. Both can be very expensive to fix and many avoid the 9-5 with 3.0 liter diesel engine. 2.2TiD engine ('02-'06 Opel) and 1.9TiD ('06-'09 Fiat) seem to be the better diesel engine choices.