Jeep Grand Cherokee MOT failure rates: what to expect
What fails on a Jeep Grand Cherokee at MOT, how often, and what each fix typically costs.

The Jeep Grand Cherokee often faces specific issues during its MOT test, with common failures including suspension problems, brake wear, and emissions issues. Fixing these problems can vary in cost, but addressing them promptly is essential to ensure your vehicle remains roadworthy and compliant with UK regulations.
Suspension Issues
One of the most frequent reasons the Jeep Grand Cherokee fails its MOT is due to suspension problems. This can include worn shock absorbers, broken springs, or issues with the suspension bushes. A worn suspension can lead to poor handling and increased stopping distances, making it crucial to address.
Repairing or replacing shock absorbers typically costs between £200 and £400, depending on the parts used and labour rates. If the springs need replacing, you can expect to pay around £150 to £300 per spring. Regular checks can help catch these issues early, potentially saving you money in the long run.
Brake System Failures
The brake system is another area where the Jeep Grand Cherokee is prone to MOT failures. Common problems include worn brake pads, damaged discs, or issues with the brake lines. Given the importance of brakes for safety, any failure in this system is taken seriously during the MOT.
Replacing brake pads can cost between £100 and £250, while new brake discs can range from £150 to £300. If there are issues with the brake lines, repairs can vary widely depending on the extent of the damage, typically costing between £100 and £200. Regular maintenance of the braking system can help avoid these costly repairs.
Emissions Failures
Emissions failures are becoming increasingly common in modern vehicles, including the Jeep Grand Cherokee. This can be due to a faulty catalytic converter, issues with the exhaust system, or problems with the engine management system. These failures can lead to your vehicle not meeting the required emissions standards.
Replacing a catalytic converter can be quite expensive, often costing between £500 and £1,200. If the exhaust system needs repairs, you might expect to pay around £200 to £500, depending on the extent of the damage. Regular servicing and checks can help ensure your emissions systems are functioning correctly.
Tyre Condition
Tyres are a critical component of any vehicle and are a common failure point during the MOT for the Jeep Grand Cherokee. Issues such as tread depth below the legal limit, uneven wear, or damage can lead to a failed test. Proper tyre maintenance is essential for safety and performance.
Replacing tyres can cost anywhere from £60 to £150 each, depending on the brand and specifications. Regularly checking tyre pressure and tread depth can help you avoid unexpected failures during the MOT. Additionally, rotating your tyres can help ensure even wear and prolong their lifespan.
Lighting and Electrical Failures
Lighting and electrical systems are crucial for safe driving, and failures in these areas are common during the MOT for the Jeep Grand Cherokee. Issues can include faulty bulbs, damaged wiring, or malfunctioning indicators. These problems can significantly impact visibility and safety on the road.
Replacing a blown bulb is relatively inexpensive, typically costing around £10 to £20. However, if there are wiring issues, repairs can become more complex and costly, ranging from £50 to £150 depending on the extent of the damage. Regularly checking all lights and indicators can help ensure they are functioning correctly before your MOT.
Bodywork and Structural Integrity
Finally, the bodywork and structural integrity of the Jeep Grand Cherokee can also lead to MOT failures. Common issues include rust, corrosion, or damage to the chassis. These problems can compromise the safety of the vehicle and must be addressed promptly.
Repairing rust or corrosion can vary widely in cost, depending on the severity of the issue. Minor repairs might cost around £100 to £300, while more extensive bodywork could range from £500 to £1,500. Regular inspections can help identify these issues early, preventing more costly repairs down the line.
By being aware of these common MOT failures for the Jeep Grand Cherokee, you can take proactive steps to maintain your vehicle. Regular servicing and maintenance can help ensure your car remains roadworthy and compliant with UK regulations, ultimately saving you money and hassle in the long run.
Frequently asked questions
What does MOT stand for?
MOT stands for Ministry of Transport. It is a test that checks if a vehicle meets road safety and environmental standards.
How often does my Jeep Grand Cherokee need an MOT?
In the UK, your Jeep Grand Cherokee will need an MOT test every 12 months once it is three years old. It's important to keep track of the expiry date.
What are common reasons for failing an MOT?
Common reasons for failing an MOT include issues with brakes, lights, tyres, and emissions. Regular maintenance can help prevent these problems.
Can I drive my Jeep Grand Cherokee if it has failed the MOT?
You cannot legally drive your Jeep Grand Cherokee if it has failed the MOT, unless you are taking it to a garage for repairs or to a pre-booked MOT test.
How can I prepare my Jeep Grand Cherokee for its MOT?
To prepare for an MOT, ensure your lights, brakes, and tyres are in good condition. It's also a good idea to check fluid levels and clean the vehicle.
What should I do if my Jeep Grand Cherokee passes the MOT?
If your Jeep Grand Cherokee passes the MOT, you will receive a certificate confirming its roadworthiness. Keep this document safe as you will need it for future reference.
How can I find a reliable MOT test centre for my Jeep Grand Cherokee?
You can find a reliable MOT test centre by checking online reviews, asking for recommendations from friends, or using the official government website to locate approved centres.
What happens if my Jeep Grand Cherokee is due for an MOT but I can't get it done in time?
If your Jeep Grand Cherokee is due for an MOT and you miss the deadline, you cannot legally drive it until it has passed the test. It's best to book an appointment as soon as possible.
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Sources
DVSA MOT History, Honest John reliability index, Parkers owner reviews, WhatCar reliability survey, UK Government MOT failure data.