These instructions apply to the Mercedes GLA Mk2 (H247) 2020-Present. For other models, please choose your vehicle here.
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The Mercedes-Benz GLA (H247, 2020–present) has ECO start/stop that switches the engine off at a standstill to save fuel. If you’d rather keep it running — in traffic, on a hot day, or before working in the engine bay — you can switch it off.
How to Turn Off ECO Start/Stop
- ECO button: if fitted, press the ‘ECO’ button on the centre console — the display confirms start/stop is off.
- MBUX menu: on cars without the button, open the touchscreen menu and go to Vehicle → ECO start/stop (or the relevant efficiency menu) and switch it off.
It Resets Every Drive
Like nearly every car with this feature, the GLA re-enables ECO start/stop each time you restart. There’s no permanent factory ‘off’ — switch it off again at the start of each journey if you prefer.
Why Switch It Off?
- Before engine-bay work — avoids an unexpected restart.
- Stop-go traffic — stops constant cycling.
- Maximum cabin cooling/heating on extreme days.
The system also holds the engine running on its own when the battery is low, the cabin needs heating/cooling, or you’re on a hill — that’s normal.
Frequently Asked Questions
How do I turn off auto stop/start on a Mercedes GLA?
Press the ECO button, or on MBUX go to Vehicle → ECO start/stop and switch it off.
Can I disable it permanently?
No — it resets to on at every restart. Switch it off each drive.
Why did stop/start come back on?
Restarting the car re-enables it automatically.
Why won’t the engine stop sometimes?
A low battery, climate demand or a gradient holds the engine running — that’s by design.
If a start/stop or battery fault light shows, look it up on autodtcs.com. See our GLA battery guide.
Disclaimer: The information on this page is provided for general guidance only. Always follow your official service manual and safety precautions when working on your vehicle. We are not responsible for errors, omissions, or any damage resulting from the use of this information.
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