Does the 2025 Mercedes-Benz GLS-Class have auto start-stop?
Yes. The EPA lists automatic engine start-stop on every 2025 Mercedes-Benz GLS-Class configuration.
Key takeaways
- Start-stop cars restart the engine many times per drive, so they are usually fitted with an AGM or EFB battery - replace like with like.
- The 3.0L 6-cylinder turbo hybrid mild hybrid and 4.0L 8-cylinder turbo hybrid mild hybrid are a mild hybrid, with a separate higher-voltage battery besides the 12V one.
- Most systems have an off button that disables start-stop until the engine is next started; some models remember the setting.
| Engine | Drive | Transmission | Start-stop |
|---|---|---|---|
| 3.0L 6-cylinder turbo hybrid mild hybrid | AWD | 9-speed automatic | Yes |
| 4.0L 8-cylinder turbo hybrid mild hybrid | AWD | 9-speed automatic | Yes |
Source: U.S. EPA / DOE fuel economy data (fueleconomy.gov). Each row is one certified configuration; a trim or option not sold in a configuration is not listed.
Useful for the 2025 Mercedes-Benz GLS-Class
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