Saab 9-5 MOT failure rates: what to expect

What fails on a Saab 9-5 at MOT, how often, and what each fix typically costs.

Saab 9-5
Image via Wikipedia, CC-licensed.

The Saab 9-5 often encounters specific issues during its MOT test. Common failures include problems with emissions, suspension components, and lighting systems. Addressing these issues can vary in cost, but understanding them can help you prepare for your MOT and avoid unexpected expenses.

Emissions Failures

Emissions-related failures are among the most frequent issues for the Saab 9-5 during its MOT. These failures typically arise from a malfunctioning catalytic converter or issues with the engine management system.

Fixing emissions problems can be costly, with catalytic converter replacements often ranging from £400 to £800. Engine management issues may require diagnostics and repairs, which can cost between £100 and £300, depending on the complexity of the problem. Regular servicing and ensuring the vehicle is warm before the test can help mitigate these issues.

Suspension Problems

The suspension system of the Saab 9-5 is another area where MOT failures commonly occur. Worn shock absorbers, broken springs, or damaged bushings can lead to a failed test.

Replacing shock absorbers typically costs between £150 and £300 per pair, while spring replacements can be around £100 to £200. Bushings are generally less expensive, with costs ranging from £50 to £100 for parts and labour. Regular checks and maintenance can prolong the life of suspension components and help avoid MOT failures.

Lighting Failures

Lighting issues are a frequent cause of MOT failures for the Saab 9-5. Problems can include blown bulbs, faulty wiring, or issues with the headlight alignment.

Replacing a blown bulb is relatively inexpensive, usually costing around £10 to £20, but if the wiring is faulty, repairs can escalate to £50 to £150. Headlight alignment adjustments are often included in the service cost, but if significant repairs are needed, it could reach £100 or more. Regularly checking lights before the MOT can help ensure they are functioning correctly.

Brake System Failures

The brake system is critical for safety, and failures in this area can lead to an MOT failure. Common issues include worn brake pads, damaged discs, or leaks in the brake lines.

Replacing brake pads typically costs between £100 and £200, while disc replacements can add another £150 to £300. If there are leaks in the brake lines, repairs can vary widely, costing anywhere from £50 to £200 depending on the extent of the damage. Keeping an eye on brake performance and addressing issues promptly can prevent costly repairs.

Tyre Condition

Tyres are a vital aspect of vehicle safety and are closely inspected during an MOT. Common failures occur due to insufficient tread depth, damage, or uneven wear.

Replacing tyres can be a significant expense, with costs ranging from £50 to £150 per tyre, depending on the brand and specifications. Regularly checking tread depth and ensuring proper alignment can help extend tyre life and prevent MOT failures.

Exhaust System Issues

The exhaust system is another area where the Saab 9-5 can fail its MOT. Common problems include leaks, corrosion, or damage to the exhaust components.

Repairing or replacing parts of the exhaust system can vary in cost. A simple patch for a leak might cost around £50 to £100, while a full exhaust system replacement can range from £300 to £600. Regular inspections can help catch issues early, potentially saving money on repairs and ensuring compliance with emissions standards.

Understanding these common MOT failures for the Saab 9-5 can help you prepare your vehicle for testing. By addressing these issues proactively, you can reduce the likelihood of costly repairs and ensure your car remains roadworthy.

Frequently asked questions

What is the MOT requirement for a Saab 9-5?

In the UK, a Saab 9-5 must have a valid MOT certificate if it is three years old or more. The MOT checks the vehicle's safety, roadworthiness, and emissions.

How often does a Saab 9-5 need an MOT?

A Saab 9-5 requires an MOT test every 12 months once it reaches three years of age. It is important to keep track of the expiry date to avoid penalties.

What are common issues that could cause a Saab 9-5 to fail its MOT?

Common issues include worn brakes, faulty lights, and excessive emissions. Regular maintenance can help prevent these problems.

Can I drive my Saab 9-5 if the MOT has expired?

No, you cannot legally drive your Saab 9-5 if the MOT has expired, unless you are driving it to a pre-booked MOT appointment. Doing so can result in fines.

How can I check the MOT history of a Saab 9-5?

You can check the MOT history of a Saab 9-5 by visiting the UK government's official vehicle check website. You will need the vehicle's registration number.

What should I do if my Saab 9-5 fails its MOT?

If your Saab 9-5 fails its MOT, you will receive a list of issues that need to be addressed. You can then have the necessary repairs done and retest the vehicle.

Is it possible to get a same-day MOT for my Saab 9-5?

Many garages offer same-day MOT services for your Saab 9-5, but it is advisable to book in advance. Availability may vary depending on the garage.

What documents do I need for my Saab 9-5 MOT?

You will need to bring the vehicle registration document and any previous MOT certificates if available. It's also helpful to have proof of identity.

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Sources

DVSA MOT History, Honest John reliability index, Parkers owner reviews, WhatCar reliability survey, UK Government MOT failure data.