How to Disable the Stop Start System on UK 2020 Mazda 6

Learning how to disable the stop start on a UK 2020 Mazda 6 is simple and quick. This guide walks you through the exact button location, dashboard indicators, and what happens when you turn it off. Whether you want better control in traffic or smoother driving, you will find everything you need right here.

If you own a UK 2020 Mazda 6, you have probably noticed that annoying engine shut-off at traffic lights. The stop start system is designed to save fuel and reduce emissions, but let us be honest. Sometimes it just gets on your nerves. Maybe you are stuck in a long queue on the M25, or perhaps you are on a hill and do not want your car rolling forward every time the light changes. Whatever your reason is, learning how to disable the stop start on a UK 2020 Mazda 6 is something every owner should know. This guide covers everything from the exact button location to what happens when you turn it off.

The good news is that Mazda made this process very straightforward. You do not need a mechanic or fancy tools. In most cases, a single press of a button does the job. But there are a few things you should know about how the system works, when it is best to keep it on, and what to watch out for. By the end of this article, you will feel confident managing your stop start system every time you get behind the wheel.

Key Takeaways

• Easy Button Access: The stop start disable button is located on the left side of the steering wheel, making it simple to reach while driving.
• Dashboard Indicator: A green auto stop icon appears on the dash when the system is active, and turns grey when disabled.
• No Damage to Your Car: Turning off stop start does not harm your engine or battery in any way.
• Fuel Economy Impact: Disabling the system may slightly reduce fuel savings in heavy stop-and-go traffic.
• Resets Each Time: The stop start system re-enables itself every time you restart the ignition, so you need to turn it off again.
• UK-Specific Considerations: UK drivers in congested cities like London benefit greatly from knowing how to manage this feature.

Understanding the Stop Start System on Your Mazda 6

What Is the Stop Start System?

The stop start system is a feature found in most modern cars, including the 2020 Mazda 6. It automatically shuts off the engine when your car comes to a complete stop, such as at traffic lights or in heavy congestion. When you take your foot off the brake or press the clutch, the engine restarts instantly. The goal is simple. It reduces the time your engine idles, which saves fuel and cuts down on harmful emissions.

For many drivers, this is a great feature. It makes sense environmentally and can improve your fuel economy over time. However, not everyone loves it. Some drivers find the constant engine restarts unsettling. Others worry about wear on the starter motor or battery life. If you are one of those drivers, you will be happy to know you have full control.

Why Does Mazda Include This Feature?

Mazda fits the auto start stop system on the 2020 Mazda 6 to meet strict European emissions regulations. The UK follows these rules closely, so nearly every new car sold here comes with some form of engine idle stop technology. It is not just about being eco-friendly. Car manufacturers need to hit average CO2 targets across their entire range, and stop start systems help them do that.

That said, Mazda has designed the system to be unobtrusive. The restarts are smooth and quick. The battery sensor monitors conditions and will not activate the system if the battery is low or the cabin needs heating. But even with these smart features, many UK Mazda 6 drivers still prefer to turn it off. And that is completely fine.

How to Disable the Stop Start on Your UK 2020 Mazda 6

The Steering Wheel Button Method

Here is the simplest and most direct way to turn off stop start on your Mazda 6. Look at the left side of your steering wheel. You will see a button with a circular arrow symbol and the letters “A” inside it. This is the stop start disable button. When the system is active, the button light is green. When you press it once, the light turns grey or off, and the system is disabled.

Follow these steps to disable the system:

• Step 1: Start your Mazda 6 and let the engine run normally.
• Step 2: Press the stop start disable button on the left side of the steering wheel.
• Step 3: Check the dashboard indicator. A greyed-out “A” with arrows means the system is off.
• Step 4: Drive as normal. The engine will no longer shut off at stops.

That is it. One press and you are done. The system stays disabled until you turn the ignition off and start the car again. Every time you restart, you will need to press the button again to keep it off.

Understanding the Dashboard Indicator

The dashboard indicator is your best friend when managing the stop start system. When the system is active, you will see a green icon on the instrument cluster. It looks like a capital “A” enclosed in a circle with rotating arrows around it. This tells you that auto engine stop start is working and ready to shut off your engine at stops.

When you press the disable button, this icon changes. It turns grey or disappears entirely, depending on your dashboard display. If you ever see the green icon flashing, it usually means the system is trying to activate but conditions are not right. This could be because the battery is low, the temperature is too hot or too cold, or the steering angle is turned. These are normal safety behaviours built into the Mazda 6 settings.

When Should You Turn Off Stop Start?

Driving Situations Where You Want It Off

There are certain moments when turning off the stop start system makes a lot of sense. Here are the most common situations where UK Mazda 6 drivers choose to disable it:

• Heavy traffic jams: In stop-and-go congestion, constant engine restarts can feel irritating and distracting.
• Hilly terrain: On steep inclines, the engine restart delay can cause the car to roll slightly before the engine catches.
• Cold mornings: In winter, some drivers prefer the engine to keep running so the cabin warms up faster.
• Towing or carrying heavy loads: The extra weight puts more strain on the starter motor during frequent restarts.
• Short trips: If you are driving around town for quick errands, keeping the engine running reduces wear on the starter.

Situations Where Stop Start Actually Helps

On the other hand, there are times when keeping the stop start system on is a good idea. In steady urban driving with frequent but short stops, the system genuinely saves fuel. Over a long commute through city centres, those small fuel savings add up. It also helps reduce emissions, which is better for the environment and can be relevant if your vehicle needs to pass an emissions test or comply with clean air zone rules in cities like London or Birmingham.

The key is to be flexible. Use the button to turn it on or off based on your current driving conditions. That is the beauty of having manual control over the auto stop start feature.

Does Disabling Stop Start Affect Your Mazda 6?

Impact on Fuel Economy

Many drivers worry that turning off the stop start system will wreck their fuel economy. The truth is, the impact depends on your driving style and conditions. In heavy urban traffic, disabling stop start may reduce your fuel economy by a small margin. You might see a drop of around 5 to 10 percent in extreme stop-and-go scenarios. However, on motorways and open roads, the stop start system does almost nothing anyway, so turning it off makes no difference at all.

For most UK drivers, the difference is barely noticeable. If you mostly drive on A-roads or motorways, you can safely leave the system off without worrying about fuel costs. If you do a lot of inner-city driving, you might want to keep it on for those specific trips.

Battery and Engine Health

Another common concern is whether disabling stop start protects your car battery and starter motor. The truth is that Mazda designed the 2020 Mazda 6 with heavy-duty components specifically rated for frequent stop start cycling. The battery sensor monitors battery health and will prevent the system from activating if the battery is weak.

That said, if you live in an area with very short trips and lots of stops, keeping the system on can put more stress on the battery over time. In those cases, disabling it may actually help extend battery life. The starter motor on the 2020 Mazda 6 is also built to handle regular use, but reducing unnecessary cycles never hurts.

Aspect	Stop Start ON	Stop Start OFF
Fuel Economy (Urban)	Slightly Better	Slightly Lower
Engine Wear	Normal	Reduced Starter Use
Battery Stress	Higher in Short Trips	Lower
Emissions	Lower	Higher
Driving Comfort	Can Be Annoying	Smoother Experience

Common Mistakes When Disabling Stop Start

Even though disabling the system is simple, there are a few mistakes that UK Mazda 6 owners make more often than you would think. Here are the ones to watch out for:

• Forgetting the system resets on restart: Many drivers turn off stop start, switch off the engine, and then are confused when it comes back on next time. Always check the dashboard icon after starting the car.
• Pressing the wrong button: The Mazda 6 has several buttons on the steering wheel. The stop start button is on the left side and has the circular arrow symbol. Do not confuse it with other controls.
• Ignoring the dashboard warning: If the indicator stays green even after you press the button, do not ignore it. Something may not be registering correctly, and a quick ignition cycle usually fixes it.
• Assuming it disables permanently: The system only stays off until you turn the key or push the start button again. This is by design and not a fault.
• Disabling it in all conditions: In some situations, like extreme cold or a low battery, the system disables itself automatically. Forcing it on in these conditions can strain components.

Tips for the Best Driving Experience with Your Mazda 6

Make It Part of Your Routine

The easiest way to manage the stop start system is to make checking the button part of your normal startup routine. Just like adjusting your mirrors or fastening your seatbelt, a quick glance at the steering wheel button becomes second nature after a few days. Within a week, you will know exactly when the system is on or off without even thinking about it.

Use the Information Display

The 2020 Mazda 6 has a clear information display on the dashboard that shows your current driving mode and active features. Take a moment to familiarise yourself with the icons and what they mean. Understanding what each indicator does gives you more confidence behind the wheel and helps you get the most out of your Mazda 6 features.

Keep Your Battery Healthy

If you find yourself disabling stop start frequently, it is worth keeping an eye on your battery health. A strong battery handles stop start cycles easily, but a weak one may struggle. If your Mazda 6 is more than three or four years old, consider having the battery tested during your regular service. A healthy battery ensures that both the stop start system and all other electrical components work perfectly.

Final Thoughts on Disabling Stop Start

Knowing how to disable the stop start on a UK 2020 Mazda 6 is one of those small things that makes a big difference in your daily driving experience. It takes just one second, requires no tools, and gives you full control over how your car behaves in traffic. Whether you are dealing with endless queues on the M1, navigating through busy city streets, or simply prefer a more traditional driving feel, the disable button puts you in charge.

The stop start system is a clever piece of technology, but it is not for everyone. And that is perfectly okay. Your car is yours to drive the way you enjoy. Use the button when you need to, keep it on when it makes sense, and drive with confidence knowing you understand every feature on your Mazda 6.

Take a moment next time you get in your car to locate the button and try it out. You will be glad you did. Mastering your Mazda 6 settings is one of the best things you can do as an owner, and disabling stop start is just the beginning.

Frequently Asked Questions

Can I disable stop start permanently on my 2020 Mazda 6?

No, the stop start system resets every time you turn the ignition off and start the car again. You will need to press the disable button each time you start the engine. There is no permanent factory setting to keep it off, but the process is quick and easy.

Will disabling stop start void my Mazda warranty?

No, using the stop start disable button is completely normal and approved by Mazda. The feature is designed to be used at the driver’s discretion. It has no impact on your warranty or service schedule.

Why does my stop start system turn off by itself sometimes?

The system automatically disables itself under certain conditions, such as a low battery charge, extreme temperatures, or when the cabin temperature has not yet been reached. This is normal behaviour and protects your vehicle’s components.

Does turning off stop start affect my Mazda 6’s resale value?

No, disabling stop start has no effect on resale value. Many drivers prefer to use the feature, while others turn it off. It is a personal preference and does not impact the mechanical condition of the car.

Where is the stop start button on a 2020 Mazda 6?

The button is located on the left side of the steering wheel column. It features a circular arrow symbol with the letter “A” inside it. Press it once to disable and once again to re-enable the system.

Can I install an aftermarket stop start disable module?

While aftermarket modules exist, they are generally unnecessary for the Mazda 6 since the factory button provides the same function. Installing aftermarket devices can also void your warranty and may cause electrical issues. Stick with the simple factory button method.