Does the 2021 BMW 5 Series have auto start-stop?
Yes. The EPA lists automatic engine start-stop on every 2021 BMW 5 Series 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 mild hybrid and 3.0L 6-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.
Parts for the 2021 BMW 5 Series
GarageDex's verified specs for this car. Each Buy button searches Amazon for that exact part.
- Battery
- Engine oil
- Wiper blades
As an Amazon Associate we earn from qualifying purchases, at no extra cost to you.
| Engine | Drive | Transmission | Start-stop |
|---|---|---|---|
| 2.0L 4-cylinder turbo hybrid | AWD | 8-speed automatic | Yes |
| 2.0L 4-cylinder turbo plug-in hybrid | AWD | 8-speed automatic | Yes |
| 2.0L 4-cylinder turbo | RWD | 8-speed automatic | Yes |
| 2.0L 4-cylinder turbo plug-in hybrid | RWD | 8-speed automatic | Yes |
| 3.0L 6-cylinder turbo mild hybrid | AWD | 8-speed automatic | Yes |
| 3.0L 6-cylinder turbo hybrid mild hybrid | RWD | 8-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.
2021 BMW 5 Series battery size, type and CCA → Some start-stop cars also need the new battery registered: which ones →
Useful for the 2021 BMW 5 Series
As an Amazon Associate we earn from qualifying purchases, at no extra cost to you.