Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2017 BMW i3 BaseFACTORY OEM SERVICE PROCEDURE
11 00 Engine in general
ENGINE IN GENERAL W20 COOPER SPECIFICATION
| Cylinder | 2 | |
| Bore hole | mm | 77.0 |
| Stroke | mm | 85.8 |
| Effective displacement | cm3 | 598 |
| Compression ratio | :1 | 11 |
| Idle speed | 1/min | % |
| Nominal speed | 1/min | 2400 |
| Max. permissible engine speed | 1/min | % |
| Compression pressure | bar | 8...12 |
| Compression pressure (maximum difference between cylinders) | bar | 3 |
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.