MOT failure rates

BMW iX MOT failure rates: what to expect

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

Updated 4th September 2026 DVSA data: Across 5,430 recorded MOT tests, 12.8% failed.

BMW iX
Image via Wikipedia, CC-licensed.

The BMW iX is a modern electric SUV that offers impressive technology and performance. 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.

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. 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.

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.

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.

Additionally, issues with wheel alignment can lead to uneven tyre wear and handling problems. 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.

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.

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.

BMW iX recall record

7 recalls have been issued for the BMW iX, between 2021 and 2025.

  1. Replacing the Cell Module of the High-Voltage Battery

    R/2025/274

    Issued 23 July 2025

    On affected vehicles the battery module frame may have been manufactured using too much force. In conjunction with swelling force of the battery this could lead to failure and a possible thermal event within the vehicles life time.

    Remedy:On affected vehicles the modules will be replaced.

    Affects cars built Sept 2021 to May 2023

  2. On affected vehicles due to a supplier component production process error a damaged Combined Charging Unit may have been installed.

    R/2023/235

    Issued 1 August 2023

    On affected vehicles due to a supplier component production process error a damaged Combined Charging Unit may have been installed.

    Remedy:Replace the Combined Charging Unit.�

    Affects cars built Jun 2022 to Sept 2022

  3. A cable bridge connection connecting two circuit boards within the cell supervision circuit (CSC) might not have been installed properly.

    R/2023/133

    Issued 8 May 2023

    A cable bridge connection connecting two circuit boards within the cell supervision circuit (CSC) might not have been installed properly.

    Remedy:On the affected vehicles the cell supervision circuit (CSC) inside the high-voltage battery will be replaced.

    Affects cars built Nov 2021 to Jan 2023

  4. During the supplier s production process of the battery cells a manufacturing defect occurred. During assembly of the cell the cathode plate may have been damaged and a broken piece may have entered the interior of the cell.

    R/2022/330

    Issued 21 October 2022

    During assembly of the HV Battery cell the cathode plate may have been damaged and a broken piece may have entered the interior of the cell. BMW strongly recommends refraining from charging the high-voltage battery and to not use the vehicles until the repair is performed. BMW also recommends parking the vehicle outdoors and not in the immediate vicinity of buildings.

    Remedy:On the affected vehicles the defective cell modules of the high-voltage battery will be replaced.

    Affects cars built Jul 2021 to Aug 2022

3 older recalls not shown.

A recall applies to a build range, not to every car of this model. Check a registration to see whether one specific vehicle has an outstanding recall.

BMW iX MOT record

From 5,430 recorded MOT tests, 12.8% failed.

MOT pass and failure rates by year of first registration
RegisteredTestsFailedMedian mileage
20225,08712.8%29,262 mi
202134312.5%34,457 mi

Most common reasons for failure

  1. Tyre tread depth not in accordance with the requirements44.0%
  2. A tyre seriously damaged29.5%
  3. A tyre cords visible or damaged13.5%
  4. Wiper blade missing or obviously not clearing the windscreen7.9%
  5. A steering ball joint with excessive wear or free play5.1%

Figures cover every BMW iX tested in the DVSA dataset, not this specific car. Check a registration for the actual history of one vehicle.

BMW iX official figures

Median across 8 variants on sale, electricity.

Electric range
368.5 miles
Manufacturer WLTP figure

Official figures for new cars. Real economy varies with driving, load and conditions.

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.

Sources