Saab 9-3 2005: reliability & common MOT faults

In 2025, 61 in every 100 first MOTs on a 2005 Saab 9-3 were passes. Most common reason for a fail: Individual sidelight or tail light (front).

Summary

The 2005 Saab 9-3 follows the pattern of the model years either side.

At a glance

How 2,719 first tests went in 2025.

Passed first time
61 in every 100
Did not pass first time
39 in every 1001,071 failed first-attempt tests
The typical car
20 yearsabout 111,363 miles
First tests counted
2,719

What failed most often

  1. Individual sidelight or tail light (front)15 in every 100 failed tests
  2. Headlight11 in every 100 failed tests
  3. Headlight aim10 in every 100 failed tests

How we count this. Data: UK MOT open data, 2025. Only Class 4 cars on their first MOT of the year are counted. A car that fails and is fixed at the test station still counts as a fail in the first-attempt rate. These are raw results, not adjusted for age, mileage, or peer mix. The MOT does not test engine or gearbox internals.

Note:

These are patterns across 2005 Saab 9-3 vehicles in 2025, not a prediction that any one car will have them. Faults are grouped by part of the car. A wear pattern follows age and use more than the way the car was built. They come from MOT defect codes, not manufacturer bulletins, recalls or a diagnosis of any one car.

Suspension

Three faults. The strongest is the suspension arm pins and bushes (rear): 4.3 times as often as on similar cars.

Figures below are measured across the 1,068 of 1,071 failed first attempts (99.7%) that recorded an odometer reading in 2025. Mileage is needed to compare like with like.

We only list faults with at least 20 failures and a rate of about 2.0 times that of similar cars, which keeps one-off results out of the list.

Suspension arm pins and bushes (rear)

Failed on 48 first tests4.3 times as often as similar carsLikely evidence

What it means

Pins and bushes on suspension arms fail as Major when they are excessively worn. They are graded Dangerous when likely to become detached. DVSA uses the same wording for a suspension joint.

Also noted as an advisory

Testers also noted it as an advisory, worn but not yet failing, on 127 first tests, 4.7 times as often as on similar cars.

Shock absorbers (front)

Failed on 55 first tests2.9 times as often as similar carsPossible evidence

What it means

Slight seepage that leaves a film of fluid on a shock absorber does not fail it. Severe leakage, or damage so that it does not function, is Major. A shock absorber missing or likely to become detached is graded Dangerous, though a missing one is only rejected if shock absorbers were fitted as standard.

Coil spring (front)

Failed on 86 first tests2.2 times as often as similar carsPossible evidence

What it means

A missing bump stop rubber is not a reason to fail a coil spring. When the vehicle is jacked and lowered, a spring that does not correctly locate as the suspension returns to its normal running position is rejected as insecurely attached. A missing spring is Major, and graded Dangerous where directional control is affected.

Data: UK MOT open data, 2025. Compared with cars of the same age and mileage. Advisories count notes recorded on failed first tests only.

Brakes

One wear pattern: brake pads (rear), 2.8 times as often as on similar cars.

Brake pads (rear)

Failed on 70 first tests2.8 times as often as similar carsWear pattern

What it means

A pad worn down to its wear indicator, or contaminated with oil or grease, is Major. A pad worn below the set thickness limit, missing or incorrectly mounted is Dangerous. The manual treats an illuminated brake wear indicator as no reason for failure, although DVSA also lists an illuminated indicator as a Major row.

Data: UK MOT open data, 2025. Compared with cars of the same age and mileage.

Advisories

Other things testers noted as worn or close to failing, more often than on similar cars.

An advisory is a note from the tester about something that has not failed yet. It is an early warning, not a fail. Advisories for the faults above are shown with those faults.

Anti-roll bar pins and bushes (rear)

Noted on 20 first tests3.2 times as often as similar carsElevated evidence

Suspension sub-frame (rear)

Noted on 193 first tests2.8 times as often as similar carsElevated evidence

Brake discs

Noted on 21 first tests2.0 times as often as similar carsWear pattern

Data: UK MOT open data, 2025. Counts cover advisories recorded on failed first tests only, compared with cars of the same age and mileage.

MOT pass rates

How first tests ended, and how the pass rates are counted.

Passed first time
61in every 100
Passed on the first test.
Fixed at the station
6in every 100
Failed, then fixed at the test station the same day.
Failed
33in every 100
Did not pass, and were not fixed at the test station.

First-attempt pass 60.6% of 2,719 first tests (2025): only cars that passed first time count. Official-style pass 66.8%: cars fixed at the test station also count as a pass. The 6 fixed and the 33 not fixed make the 39 in every 100 that did not pass first time.

Same model, other years

Passed first time in every 100, all tested in 2025.

406080100200020052010Older carsNewer cars
406080100200020052010Older carsNewer cars

Newer cars are younger, so look for a jump rather than the climb. A year earlier (2024), when these cars were a year younger, 60 in every 100 passed first time.

YearPassed first timeFirst tests
199965 in every 100454
200065 in every 100568
200165 in every 100608
200269 in every 100679
200363 in every 100746
200458 in every 1001,777
2005 This car61 in every 1002,719
200660 in every 1004,231
200763 in every 1005,547
200864 in every 1004,841
200964 in every 1003,192
201066 in every 1003,100
201166 in every 1002,179

If you are buying one

What this year's MOT record means for the decision in front of you.

Mileage matters most on a 2005 Saab 9-3.

Of 2005 Saab 9-3 vehicles with under 81,000 miles, 72 in every 100 passed their 2025 MOT first time. With 143,000 miles or more, 55 in every 100 did.

Under 81,000545 tests
72
81,000–102,000532 tests
60
102,000–120,000 Typical car540 tests
58
120,000–143,000550 tests
58
143,000 and over546 tests
55

What to check at your mileage

How often each fault turned up on a failed first test, by the car's mileage. Read it as: what is likely to need looking at on a car like the one in front of you.

Under 81,000102,000–120,000143,000 and over
Individual sidelight or tail light (front)2.97.27.3
Headlight3.55.64.9
Headlight aim2.64.14.9
Coil spring (front)2.95.02.4
Windscreen washers1.73.73.3

Faults per 100 first tests, by the car's mileage at the test.


When a car fails

23in every 100

of failed cars had one item to fix.

53in every 100

of failed cars had three or more items to fix.

10in every 100

of all first tests had a defect the tester marked dangerous (unsafe to drive away).


Every figure here is a first-attempt MOT rate from DVSA open data for this model line, for cars of this model year tested in 2025. Each mileage band holds a fifth of the tests. MOTs do not test engine or gearbox internals, so this is a pre-purchase checklist, not a full reliability score.

FAQs

Short answers about how to read this model-year guide.

The 2005 Saab 9-3 follows the pattern of the model years either side. Its main cause of failure was Individual sidelight or tail light (front), about 15 in every 100 failed tests. In 2025, 60.6% of 2,719 first MOTs on the 2005 Saab 9-3 passed first time (PRS: items fixed at the station the same day, counted as a fail). The official-style rate including PRS is 66.8%. Among 1,071 failed first-attempt MOT tests (test year 2025), Suspension arm pins and bushes (rear) appears more often than on similar cars (4.5% of those tests; 48 observed failures; about 4.3× more often than similar cars). There is no single reliability score here; this is a pre-purchase checklist built from DVSA open data, not a guarantee for any individual car.
Ranked by how often they were actually recorded, the items that most often failed a 2005 Saab 9-3 at the first attempt were Individual sidelight or tail light (front) (15.3%), Headlight (10.6%) and Headlight aim (9.6%), each as a share of the year's failed first attempts. That is what goes wrong most often on the car. The common faults table shows a different measure: faults that are unusual compared with similar cars.
Among failed first-attempt tests we highlight patterns that appear more often than on similar cars. Top example: Suspension arm pins and bushes (rear) (4.5% of those tests; 48 observed failures; about 4.3× more often than similar cars). These are statistical signals, not a diagnosis of any individual car.
Suspension arm pins and bushes (rear) shows up more often than on similar cars (4.5% of those tests; 48 observed failures; about 4.3× more often than similar cars). That does not prove a design fault. Age, mileage, and how the car was used still matter. Treat it as a pre-purchase checkpoint, not a manufacturer service bulletin.
Common MOT problem areas for the 2005 Saab 9-3 include Suspension arm pins and bushes (rear), Shock absorbers (front), Coil spring (front). These are the faults that stand out compared with similar cars, not a complete list of what can go wrong on any individual car.
Advisories flag issues noted at the test and are not a fail rate. We show advisory patterns that appear more often than on similar cars among failed first-attempt tests, separate from common failure rows. Use them as early-warning checks, not as a pass/fail score.
This page highlights MOT failure patterns for the 2005 Saab 9-3 (registration year) using UK DVSA open data for the selected test year. Patterns are compared with cars of a similar age and mileage. It is a buyer checklist from MOT defect statistics, not a full service history or manufacturer service-bulletin list.
No. MOT tests do not cover engine internals, gearboxes, or many electronic modules. Patterns here come from MOT defect statistics only and should not be read as engine or gearbox reliability scores.

About this data

How this page is built and what it can (and can't) say.

These figures come from UK MOT open data for this model year. We surface common failure patterns against similar cars, not a full reliability score, and not a pass/fail verdict on any individual vehicle.

2024 2025

What we include

UK Class 4 cars only. Normal MOT tests (not retests); first test per vehicle per calendar year; results pass, PRS, or fail.

Same-day repairs

PRS means the car failed items that were fixed at the test station and then passed the same day. We count PRS as a first-attempt fail in headline rates so same-day repairs do not hide problems.

How we compare

We compare this model year with other Class 4 cars of similar age and mileage in the same test year. This model family is left out of the peer group so the car is not measured against itself.

What this does not cover

  • MOTs do not cover engine internals, gearboxes, or many electronics; this is not a full reliability score.
  • Common faults come from MOT defect stats, not manufacturer TSBs or recalls.
  • Age and mileage matching reduces, but does not remove, differences in how cars were used and maintained.
  • If the data for a car is too thin to say anything useful, we say so rather than guess.

Contains public sector information licensed under the Open Government Licence v3.0.

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