BMW iX MOT failure rates: what to expect

What fails on a BMW iX at MOT, how often, and what each fix typically costs.

BMW iX
Image via Wikipedia, CC-licensed.

The BMW iX is a modern electric SUV that offers impressive technology and performance. However, like any vehicle, it can encounter issues that may lead to an MOT failure. Common problems include issues with lights, brakes, and suspension components. Understanding these can help you prepare for your MOT and budget for potential repairs.

Lights and Electrical Systems

One of the most frequent reasons for MOT failures on the BMW iX is related to its lights and electrical systems. This includes headlamps, brake lights, and indicators not functioning correctly. The cost to replace a bulb is relatively low, typically ranging from £5 to £15, depending on the type.

However, if the issue lies deeper within the electrical system, such as a faulty wiring harness or a malfunctioning control module, repairs can become more expensive. These repairs can range from £100 to £500, depending on the complexity of the issue and the parts required. Regular checks of all lights and electrical components can help prevent these issues from arising during the MOT.

Brakes and Brake Components

Brakes are a critical safety feature, and any issues here can lead to an MOT failure. Common problems with the BMW iX include worn brake pads, damaged discs, or issues with the brake fluid. The cost of replacing brake pads typically ranges from £100 to £300, depending on the quality of the parts and whether you choose to have them fitted at a garage.

If the brake discs also require replacement, this can add an additional £150 to £400 to the total cost. Regular maintenance and checks of the braking system can help identify wear and tear before the MOT, ensuring that you are not caught off guard.

Suspension and Steering Components

Suspension and steering issues are another common cause of MOT failures for the BMW iX. Problems such as worn shock absorbers, damaged springs, or issues with the steering rack can lead to a failed MOT. The cost of replacing shock absorbers typically ranges from £100 to £250 per unit, while coil springs can cost between £80 and £150 each.

If the steering system needs attention, repairs can be more complex and costly, potentially ranging from £200 to £600, depending on the specific components that require replacement. Regular inspections of the suspension and steering systems can help catch issues early, potentially saving you money in the long run.

Tyres and Wheel Alignment

Tyres are essential for safety and performance, and they are a common area for MOT failures. The BMW iX, like all vehicles, must have tyres that meet legal tread depth requirements. If the tread depth is below 1.6mm, the tyres will need to be replaced. The cost of a new tyre can range from £50 to £150, depending on the brand and specifications.

Additionally, issues with wheel alignment can lead to uneven tyre wear and handling problems. A wheel alignment service typically costs between £30 and £100. Ensuring that your tyres are regularly checked for wear and maintaining proper alignment can prevent MOT failures related to this area.

Exhaust and Emissions Systems

Although the BMW iX is an electric vehicle and does not have a traditional exhaust system, it is still important to check the emissions systems related to its battery and electric components. Issues with the battery cooling system or electric drive components can lead to performance issues that might affect the vehicle’s compliance with emissions regulations.

If there are faults in these systems, repairs can vary widely in cost, potentially ranging from £200 to £1,000 depending on the specific components that need attention. Regular maintenance of the electric systems can help ensure that the vehicle remains in good working order and passes the MOT.

Bodywork and Structural Integrity

While not as common as mechanical issues, bodywork and structural integrity can also lead to MOT failures. This includes rust, corrosion, or damage to the chassis. For the BMW iX, which features a mix of materials, including aluminium and plastic, repairs can vary significantly in cost.

Minor body repairs might cost around £100 to £300, while more extensive structural repairs can run into the thousands, depending on the extent of the damage. Regular inspections for rust and damage can help you catch these issues early, preventing costly repairs down the line.

Understanding the common reasons for MOT failures on the BMW iX can help you prepare your vehicle for its test. Regular maintenance and timely repairs can keep your car in good condition and help ensure a successful MOT.

Frequently asked questions

What is the BMW iX mot?

The BMW iX mot refers to the Ministry of Transport test that checks the safety and roadworthiness of the BMW iX electric vehicle. It is a legal requirement for vehicles over three years old in the UK.

How often do I need to get my BMW iX mot?

You need to get your BMW iX mot every year once it reaches three years old. This ensures that your vehicle remains safe and compliant with UK regulations.

What happens if my BMW iX fails the mot?

If your BMW iX fails the 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.

Can I drive my BMW iX if the mot has expired?

No, you cannot legally drive your BMW iX if the mot has expired, unless you are driving it to a pre-booked mot appointment. Doing so can result in fines and penalties.

Where can I get my BMW iX mot done?

You can get your BMW iX mot done at any authorised mot testing centre in the UK. Many garages and dealerships offer this service, so it's best to check for one nearby.

What should I do to prepare my BMW iX for the mot?

To prepare your BMW iX for the mot, ensure that all lights are working, tyres are properly inflated, and the windscreen is clear of cracks. Regular maintenance can also help improve your chances of passing.

Is there a specific mot test for electric vehicles like the BMW iX?

The mot test for electric vehicles, including the BMW iX, is similar to that for petrol or diesel cars. However, there may be additional checks related to the battery and electric systems.

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Sources

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