Aston Martin DB11 MOT failure rates: what to expect
What fails on a Aston Martin DB11 at MOT, how often, and what each fix typically costs.

The Aston Martin DB11 is a luxury sports car that combines performance with elegance. However, like any vehicle, it can encounter issues that may lead to MOT failures. Common problems include issues with lights, brakes, and emissions. Fixing these can vary in cost, but understanding the typical failures can help owners prepare.
Lighting Failures
One of the most common reasons for MOT failures in the Aston Martin DB11 is lighting issues. This includes headlights, brake lights, and indicators not functioning correctly. Faulty bulbs or misaligned headlights can easily lead to a failed MOT.
Replacing a blown bulb is relatively inexpensive, typically costing around £10 to £20. However, if the issue is due to wiring or a faulty switch, repairs can escalate to £100 or more. Ensuring that all lights are functioning before the MOT can save time and money.
Brake System Issues
The braking system is crucial for safety, and any faults here can lead to an MOT failure. Common issues include worn brake pads, damaged discs, or leaks in the brake lines. The DB11, being a high-performance vehicle, requires high-quality components, which can be costly to replace.
Brake pad replacement can range from £150 to £300, depending on the quality of the parts used. If the brake discs also need replacing, this can increase the cost significantly, potentially reaching £600 or more. Regular maintenance of the braking system is essential to avoid these expensive repairs.
Emissions Failures
Emissions testing is a key part of the MOT process, and the Aston Martin DB11 must meet specific standards. Common issues include a malfunctioning catalytic converter or problems with the engine management system. These can lead to increased emissions and a failed MOT.
Replacing a catalytic converter can be quite costly, often ranging from £500 to £1,500, depending on the model and parts used. Regular servicing can help identify potential issues before they lead to a failed MOT, ensuring that emissions remain within acceptable limits.
Tyre Condition and Tread Depth
Tyres are vital for safety and performance, and they are a common MOT failure point. The DB11 requires high-performance tyres, which must meet specific tread depth and condition requirements. Worn or damaged tyres can lead to an immediate MOT failure.
Replacing tyres on the DB11 can be expensive, with high-performance options costing between £200 and £400 each. It is advisable to regularly check tyre condition and tread depth, ensuring they meet the legal minimum of 1.6mm across the central three-quarters of the tyre.
Suspension and Steering Issues
The suspension and steering systems are critical for handling and ride comfort in the Aston Martin DB11. Common MOT failures in this area include worn shock absorbers, damaged springs, or issues with the steering rack. These problems can affect vehicle stability and safety.
Repairing or replacing shock absorbers can cost between £150 and £300 per corner, while more extensive suspension work may exceed £1,000. Regular inspections can help catch these issues early, preventing more significant problems down the line.
Bodywork and Structural Integrity
While not as common as mechanical failures, issues with bodywork and structural integrity can also lead to an MOT failure. This includes rust, corrosion, or damage to critical areas such as the chassis or floor pan. The DB11’s luxury build means that repairs can be particularly costly.
Repairing rust or structural damage can vary widely in cost, often starting around £200 for minor repairs and potentially reaching £2,000 or more for extensive work. Keeping the vehicle clean and protected from the elements can help mitigate these issues.
Understanding these common MOT failures and their associated costs can help Aston Martin DB11 owners maintain their vehicles effectively. Regular maintenance and timely repairs can ensure that the DB11 remains in top condition, both for performance and compliance with UK regulations.
Frequently asked questions
What is the MOT requirement for an Aston Martin DB11?
In the UK, an Aston Martin DB11 must have its first MOT test three years after its registration date. After that, it needs to be tested annually.
How can I check the MOT status of an Aston Martin DB11?
You can check the MOT status of an Aston Martin DB11 by visiting the official UK government website. You will need the vehicle's registration number to access the information.
What are common reasons for an MOT failure on a DB11?
Common reasons for an MOT failure on a DB11 include issues with the brakes, lights, and emissions. Regular maintenance can help prevent these problems.
How much does an MOT test cost for an Aston Martin DB11?
The cost of an MOT test can vary depending on the garage, but it typically ranges from £30 to £50. It's advisable to shop around for the best price.
Can I drive my Aston Martin DB11 if the MOT has expired?
You cannot legally drive your Aston Martin DB11 if the MOT has expired, unless you are driving it to a pre-booked MOT appointment. Otherwise, you risk fines and penalties.
What should I do if my DB11 fails its MOT?
If your DB11 fails its MOT, you will receive a list of issues that need to be addressed. You must fix these problems and have the vehicle retested before you can legally drive it.
How can I prepare my Aston Martin DB11 for its MOT?
To prepare your DB11 for its MOT, check the lights, brakes, and tyres. It is also a good idea to ensure that the vehicle is clean and that all fluids are topped up.
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Sources
DVSA MOT History, Honest John reliability index, Parkers owner reviews, WhatCar reliability survey, UK Government MOT failure data.