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.
Engine data
2009 Audi A6 BaseSECTION Engine data
WARNING: This page is about a different car, the 2008 Audi RS 4 and 2007 Audi RS 4. However, it is still accessible from the selected car via links, so may be relevant.
| Code letters | BNS | |
|---|---|---|
| Displacement | ltr. | 4,163 |
| Output | kW at 1/rpm | 309/7800 |
| Torque | Nm at rpm | 430/5500 |
| Bore | Dia. mm | 84.5 |
| Stroke | mm | 92.8 |
| Compression ratio | 12.2 | |
| RON | 98 1) | |
| Fuel injection and ignition system | Bosch Motronic | |
| Ignition sequence | 1-5-4-8-6-3-7-2 | |
| Exhaust gas recirculation | no | |
| Charging | no | |
| Knock control | yes | |
| Variable valve timing | yes | |
| Variable intake manifold | yes | |
| Secondary air injection (AIR) system | yes | |
|
||
RENDER: 1.0x
NO RELATED
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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.