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subject: 7 Common Problems with the Daihatsu Mira (And How to Fix Them!) [print this page]

The Daihatsu Mira has long been a favorite among drivers who want a compact, fuel-efficient, and budget-friendly car. Known for its reliability and practicality, the Mira has built a strong reputation, especially in urban areas where its small size and agile handling make it ideal for city driving. However, like any vehicle, it isn’t completely free of issues. Over time, certain problems may arise due to wear and tear, lack of maintenance, or faulty components.

In this comprehensive guide, we’ll explore seven common problems with the Daihatsu Mira and provide detailed solutions on how to fix them. Whether you’re a current Mira owner or considering purchasing one, this article will help you understand potential issues and keep your vehicle running smoothly for years to come.

Engine Overheating


One of the most frequently reported issues with the Daihatsu Mira is engine overheating, especially in older models or vehicles that haven’t been serviced regularly. Overheating can occur for several reasons, including coolant leaks, a failing thermostat, or a malfunctioning radiator fan.

Causes of Engine Overheating


Low coolant levels due to leaks

A clogged or damaged radiator

Faulty water pump or thermostat

Malfunctioning radiator fan

Blocked hoses restricting coolant flow

How to Fix It


Check Coolant Levels – Make sure the coolant reservoir is filled to the recommended level. Top it up if necessary.

Inspect for Leaks – Examine the radiator, hoses, and water pump for any signs of leakage.

Clean the Radiator – Remove dirt, debris, and sediment buildup that can reduce cooling efficiency.

Replace the Thermostat – If your Mira overheats frequently, a faulty thermostat may be the culprit.

Test the Radiator Fan – Ensure the fan is functioning properly. If not, replace the fan motor or relay.

Regular maintenance, such as flushing the radiator and replacing coolant at recommended intervals, can prevent overheating issues in the long run.

Transmission Problems


Some Daihatsu Mira owners report issues with the automatic transmission, particularly with gear shifting delays or jerky movements during acceleration. While manual transmission models are generally more reliable, automatic variants may develop problems over time.

Signs of Transmission Trouble


Delayed gear engagement

Slipping gears

Grinding or clunking noises

Transmission fluid leaks

How to Fix It


Check Transmission Fluid – Low or dirty fluid is a leading cause of shifting problems. Replace or top up the fluid as required.

Inspect for Leaks – Transmission fluid leaks can lead to severe damage if ignored. Fix any leaks promptly.

Reset the Transmission Control Module – Sometimes, electronic resets resolve minor shifting issues.

Professional Servicing – If problems persist, consult a certified mechanic to diagnose the transmission and repair or replace worn components.

Regularly servicing your Mira’s transmission and replacing fluid at recommended intervals can greatly extend its lifespan.

Brake System Issues


The braking system is one of the most crucial components of any vehicle, and the Daihatsu Mira is no exception. Over time, brake pads, discs, and hydraulic components can wear out, leading to reduced stopping power and increased safety risks.

Symptoms of Brake Problems


Squeaking or grinding noises when braking

Spongy or soft brake pedal

Vibrations when applying brakes

Longer stopping distances

How to Fix It


Replace Worn Brake Pads – If you hear squealing or grinding, your pads may be worn down and need replacement.

Check Brake Discs – Warped or damaged discs can reduce braking efficiency and should be resurfaced or replaced.

Inspect Brake Fluid – Low or contaminated brake fluid can cause braking problems. Flush and refill the system if necessary.

Examine Brake Lines – Check for leaks or cracks that could compromise braking performance.

Routine inspection and timely replacement of brake components ensure your Mira remains safe on the road.

Suspension and Steering Problems


Due to the Daihatsu Mira’s compact size and lightweight build, its suspension components are more prone to wear, especially if you frequently drive on rough or uneven roads. Common complaints include knocking noises, poor ride comfort, and unstable steering.

Causes of Suspension Issues


Worn-out shock absorbers or struts

Damaged control arms or bushings

Loose steering components

Misaligned wheels

How to Fix It


Inspect the Shocks and Struts – Replace any worn-out parts that affect ride comfort and handling.

Check Control Arm Bushings – Damaged bushings should be replaced to reduce knocking noises and improve stability.

Perform Wheel Alignment – Misaligned wheels can cause uneven tire wear and unstable steering.

Lubricate Steering Joints – Proper lubrication helps maintain smooth steering response.

Maintaining your Mira’s suspension system will not only enhance comfort but also improve safety and overall driving performance.

Electrical System Failures


Another common issue reported by Daihatsu Mira owners involves electrical malfunctions, ranging from faulty lights to issues with the central locking system. These problems are often caused by blown fuses, weak batteries, or failing alternators.

Common Electrical Problems


Headlights or taillights not working

Power windows malfunctioning

Dashboard warning lights staying on

Battery draining quickly

How to Fix It


Check the Fuses – Replace any blown fuses that might be causing electrical failures.

Test the Battery – Weak or dead batteries should be replaced with high-quality alternatives.

Inspect the Alternator – A failing alternator may cause repeated battery drain and should be repaired or replaced.

Examine Wiring Connections – Loose or corroded connections can cause intermittent failures; clean and secure them properly.

Using genuine electrical components and performing regular system checks will help you avoid costly breakdowns.

Fuel Efficiency Drops


The Daihatsu Mira is known for its excellent fuel efficiency, but over time, some owners notice a sudden drop in mileage. This can be caused by various factors, from clogged filters to engine misfires.

Causes of Poor Fuel Economy


Dirty air or fuel filters

Faulty oxygen sensor

Worn-out spark plugs

Incorrect tire pressure

Engine tuning issues

How to Fix It


Replace Air and Fuel Filters – Clogged filters restrict airflow and fuel delivery, reducing efficiency.

Inspect the Oxygen Sensor – A failing sensor can cause incorrect fuel mixture readings and lower mileage.

Check Spark Plugs – Worn or fouled plugs should be replaced to maintain proper combustion.

Maintain Correct Tire Pressure – Under-inflated tires increase rolling resistance and fuel consumption.

Perform Regular Engine Tune-Ups – A properly tuned engine ensures optimal fuel efficiency.

Keeping up with preventive maintenance helps maintain the Mira’s fuel economy and lowers long-term running costs.

Air Conditioning and Cooling Issues


Many Daihatsu Mira owners experience problems with the air conditioning system, especially during hotter months. Weak cooling or unusual noises often indicate problems with the compressor, refrigerant levels, or blower motor.

Common A/C Problems


Weak or no cold air

Foul odors coming from vents

Strange noises when A/C is on

Refrigerant leaks

How to Fix It

Recharge the Refrigerant – Low refrigerant levels can reduce cooling performance.

Inspect the Compressor – If the compressor fails, replace it to restore cooling efficiency.

Clean the Cabin Air Filter – A clogged filter can block airflow and reduce A/C performance.

Check for Leaks – Leaking hoses or condenser coils should be repaired immediately.

Regular A/C servicing ensures a comfortable driving experience while preventing costly system failures.

Final Thoughts


The Daihatsu Mira remains a popular choice among compact car enthusiasts due to its affordability, efficiency, and practicality. However, like any vehicle, it requires proper care and attention to maintain peak performance. By addressing these seven common problems early and following the recommended fixes, you can extend the lifespan of your Mira and enjoy a smooth, trouble-free driving experience.

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