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

The BYD Dolphin is a compact electric vehicle that has gained popularity in the UK. Common MOT failures for this model typically include issues with lights, brakes, and suspension components. Fixing these problems can vary in cost, but addressing them promptly can help ensure your vehicle remains roadworthy.
Lights and Electrical Issues
One of the most frequent causes of MOT failure for the BYD Dolphin is related to lights and electrical systems. This includes problems such as blown bulbs, malfunctioning indicators, or issues with the brake lights.
Replacing a blown bulb is relatively inexpensive, often costing around £10 to £20, depending on the type of bulb. However, if the issue lies with the wiring or the control unit, repairs can escalate to £100 or more. Regularly checking lights and ensuring all electrical components function correctly can help avoid these issues during the MOT.
Brake System Failures
Brakes are critical for safety, and any faults in the braking system can lead to an MOT failure. Common problems include worn brake pads, damaged discs, or issues with the brake fluid.
Replacing brake pads typically costs between £100 and £200, while disc replacement can range from £150 to £300. If the brake fluid needs replacing, this service generally costs around £50. Keeping an eye on brake performance and addressing any signs of wear early can help prevent more significant issues down the line.
Suspension and Steering Problems
The suspension and steering systems are vital for vehicle handling and comfort. Common MOT failures for the BYD Dolphin may involve worn shock absorbers, damaged springs, or issues with steering components.
Replacing shock absorbers can cost between £150 and £300 for a pair, while springs may cost around £100 each. Steering issues can vary widely in cost, depending on the specific component that needs attention, but repairs can range from £100 to £400. Regular checks and maintenance can help identify problems before they lead to an MOT failure.
Tyre Condition and Tread Depth
Tyres are essential for safety and performance, and their condition is a common reason for MOT failures. The legal minimum tread depth in the UK is 1.6mm, and any tyres below this limit will result in a failure.
Replacing tyres can be costly, with prices ranging from £50 to £150 per tyre, depending on the brand and size. Additionally, uneven wear may indicate alignment issues, which could lead to further costs. Regularly checking tyre pressure and tread depth can help ensure compliance with MOT standards.
Exhaust and Emissions
As an electric vehicle, the BYD Dolphin has a different emissions profile compared to traditional combustion engines. However, any issues with the exhaust system, such as leaks or failures in the emissions control system, can still lead to an MOT failure.
While electric vehicles generally have fewer exhaust-related issues, if problems arise, repairs can vary significantly in cost. Minor fixes might cost around £100, while more extensive repairs could reach £500 or more. Keeping the exhaust system in good condition is crucial for passing the MOT.
Bodywork and Structural Integrity
The bodywork and structural integrity of the BYD Dolphin are also assessed during the MOT. Common failures may include corrosion, particularly in older vehicles, or damage to structural components.
Repairing bodywork can be expensive, with costs ranging from £200 for minor dents to £1,000 or more for significant structural repairs. Regular inspections and prompt repairs of any body damage can help maintain the vehicle’s integrity and ensure it passes the MOT.
By understanding these common issues and their associated costs, BYD Dolphin owners can better prepare for their MOT and ensure their vehicle remains safe and compliant on the road.
Frequently asked questions
What is the BYD Dolphin mot?
The BYD Dolphin is an electric vehicle designed for efficiency and comfort. It offers a modern design and advanced technology features.
How far can the BYD Dolphin travel on a single charge?
The BYD Dolphin has a competitive range, allowing for long journeys without frequent charging. Actual range may vary based on driving conditions and habits.
Is the BYD Dolphin suitable for city driving?
Yes, the BYD Dolphin is well-suited for city driving due to its compact size and agile handling. It also benefits from low running costs and zero emissions.
What charging options are available for the BYD Dolphin?
The BYD Dolphin can be charged at home using a standard socket or a dedicated home charger. It is also compatible with public charging stations across the UK.
How does the BYD Dolphin compare to other electric vehicles?
The BYD Dolphin offers a good balance of price, range, and features compared to other electric vehicles. It is designed to be an affordable option for those looking to switch to electric.
What safety features does the BYD Dolphin include?
The BYD Dolphin comes equipped with various safety features, including advanced driver assistance systems. These features help enhance safety for both the driver and passengers.
Are there any government incentives for buying a BYD Dolphin?
Yes, buyers of electric vehicles like the BYD Dolphin may be eligible for government incentives, such as grants or tax benefits. It's advisable to check the latest information on available schemes.
What is the warranty coverage for the BYD Dolphin?
The BYD Dolphin typically comes with a manufacturer's warranty that covers the vehicle for a set number of years or miles. It's best to check with the dealer for specific warranty details.
Got a BYD Dolphin reg?
Free profile in seconds. Full report £4.99.
Free profile. No signup. Powered by DVLA and DVSA.
Sources
DVSA MOT History, Honest John reliability index, Parkers owner reviews, WhatCar reliability survey, UK Government MOT failure data.