Used car guide

2005 Saab 9-3 diesel: common problems and MOT failures

What MOT testers find on the diesel Saab 9-3 first registered in 2005 (diesel cars only): we looked at the 1,418 MOTs these cars had during 2023–2025. Plus known faults and what to look at before you buy one.

1,418MOTs of 2005 diesel cars, done in 2023–2025
57%pass first time (all 2005 cars: 57%)
7,800typical miles a year
4.5×the usual rate for steering rack inner joints

What goes wrong more than usual on a 2005 Saab 9-3 diesel?

Parts flagged at MOT more often on the 2005 Saab 9-3 diesel than on all cars registered in 2005.

  • Steering rack inner joints4.5× usual
    Saab 9-3
    17.1% All 2005 cars
    3.8%

    Failed outright at MOT: 0%, against 0% of all 2005 cars. The rest were advisories or minor defects.

    Rough price £100–£450 our estimate

    At the viewing: On a straight road the steering wheel should sit straight. Listen for knocks when turning, and check the steering feels even.

  • Sub-frame2.6× usual
    Saab 9-3
    13.9% All 2005 cars
    5.4%

    Failed outright at MOT: 0.5%, against 0.3% of all 2005 cars. The rest were advisories or minor defects.

    Rough price £300–£1,000 our estimate

    At the viewing: Look underneath at the frame the suspension bolts to. Flaky rust or holes are expensive to fix.

  • Diesel smoke emissions4.3× usual
    Saab 9-3
    3.9% All 2005 cars
    0.9%

    Failed outright at MOT: 3.3%, against 0.8% of all 2005 cars. The rest were advisories or minor defects.

    Rough price £175–£900 (catalytic converter) ClickMechanic

    At the viewing: Look for smoke when revving the warm engine and for engine or DPF warning lights.

  • Anti-roll bar bushes and joints2.3× usual
    Saab 9-3
    3.4% All 2005 cars
    1.5%

    Failed outright at MOT: 0.7%, against 0.3% of all 2005 cars. The rest were advisories or minor defects.

    Rough price £100–£280 (pair of drop links) Checkatrade

    At the viewing: Drive slowly over bumps and listen for a knock or rattle from the front. Worn anti-roll bar links are a cheap fix.

  • Front struts3.8× usual
    Saab 9-3
    2.3% All 2005 cars
    0.6%

    Failed outright at MOT: 0.4%, against 0.2% of all 2005 cars. The rest were advisories or minor defects.

    Rough price £120–£400 our estimate

    At the viewing: Listen for knocks over speed bumps, and look behind each front wheel for a snapped coil spring.

Better than most

Rigid brake pipes: 3.8% here, against 14.9% of all 2005 cars. Brake lights: 1.8% here, against 5.5% of all 2005 cars.

Common 2005 Saab 9-3 diesel MOT failures and advisories

The share of 2005 Saab 9-3 diesel MOT tests where testers flagged each area, as a fail or an advisory. Rough prices are typical independent-garage costs.

  • Suspension
    54% of testsRough price £120–£400

    At the viewing: Listen for knocks over speed bumps, and look behind each front wheel for a snapped coil spring.

  • Brakes
    39% of testsRough price £150–£350

    At the viewing: Look for a lip on the disc edges and feel for judder or pulling when braking firmly from about 40mph.

  • Lights and electrics
    36% of testsRough price £10–£80

    At the viewing: Ask a friend to check every light, including brake lights and indicators, while you operate them.

  • Tyres
    33% of testsRough price £70–£150

    At the viewing: Check the tread on all four tyres, including the inside edges, and look for cracks or bulges.

  • Steering
    22% of testsRough price £100–£450

    At the viewing: On a straight road the steering wheel should sit straight. Feel for play or knocking when turning.

  • Exhaust and emissions
    18% of testsRough price £100–£1,200

    At the viewing: Look for black soot in the tailpipe, listen for blowing from the exhaust and check for engine or DPF warning lights.

Known faults on the 2005 Saab 9-3 diesel

Reported by owners, mechanics and buying guides for this model and age. Check which engine the car has, as some apply to one engine only.

  • Hood motors and leaks (convertible)

    Convertible

    The electric hood motors can be damaged if the hood has been operated by hand. Check for rips, leaks and whistling at speed.

    At the viewing: Raise and lower the hood a couple of times and look for leaks.

    Source: RAC: Saab 9-3 Convertible (2003-2012) used car review

  • Fast front tyre wear (powerful versions)

    Powerful versions

    Hard driving can wear out the front tyres in about 5,000 miles.

    At the viewing: Check the front tyre tread.

    Source: RAC: Saab 9-3 Convertible (2003-2012) used car review

Questions to ask the seller before buying a 2005 Saab 9-3 diesel

Ask before you travel to see it. A seller who knows the car will have answers, and receipts.

  1. Has the hood or its motors been repaired?
  2. Any recent work on the steering rack inner joints? (Flagged at MOT 4.5× as often on the 2005 Saab 9-3 diesel as on other cars the same age.)
  3. Any recent work on the sub-frame? (Flagged at MOT 2.6× as often on the 2005 Saab 9-3 diesel as on other cars the same age.)
  4. Any recent work on the diesel smoke emissions? (Flagged at MOT 4.3× as often on the 2005 Saab 9-3 diesel as on other cars the same age.)
  5. Can I see the service history and receipts for any big jobs?

Looking at a Saab 9-3?

Check the actual car: its own MOT history, mileage and what to ask the seller. Free, no sign-up.

Other years

Every year of the Saab 9-3 compared

YearMOT testsMost flagged
2012595Suspension 29%
20117,279Suspension 40%
201010,518Suspension 41%
200911,188Suspension 40%
200817,835Suspension 41%
200720,904Suspension 42%
200616,596Suspension 45%
20046,916Suspension 46%
20032,917Suspension 44%
20022,517Brakes 36%
20012,321Brakes 35%
20002,036Brakes 35%
19991,595Brakes 33%
1998892Brakes 38%

Where this comes from: the DVSA's anonymised results for every MOT test done in Great Britain during 2023–2025, counting the MOTs of Saab 9-3 cars first registered in 2005. "Flagged" includes advisories, so it isn't the same as a fail rate. How we score