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Audi CAKA / CGXC specs: 3.0L (183 ci) 6-cylinder, 84.5 x 89 mm (3.3268 x 3.5039 in) bore and stroke, 10.3:1 compression. Rated 333 hp, 2010–2016.
The Audi CAKA / CGXC is undersquare — the 3.5039" stroke exceeds the 3.3268" bore by 5.1% — a layout that trades peak RPM for leverage and torque low in the range. The 3.5039" stroke puts mean piston speed at 4,000 ft/min around 6,850 RPM, which is where a production bottom end is generally considered at its limit. Each of the 6 cylinders displaces 30.5 ci (500 cc).
10.3:1 on aluminum heads is in the range that usually runs on pump premium; aluminum sheds heat faster than iron, which makes the same number a little more forgiving.
It is one of 5 engines in the EA837 family, sitting between the 182.9 ci and 195.1 ci members. 7 factory variants share these dimensions, rated at 333 hp across 2010–2016.
| Displacement | 183 ci / 3 L |
|---|---|
| Bore | 3.3268" |
| Stroke | 3.5039" |
| Cylinders | 6 |
| Configuration | V6 |
| Compression ratio | 10.3:1 |
| Bore/stroke ratio | 0.949 |
| Block material | aluminum |
|---|---|
| Head material | aluminum |
| Valvetrain | DOHC |
| Fuel type | gas |
| Advertised HP | 333 hp |
| Years | 2010–2016 |
| Year | Version | HP @ rpm | Torque @ rpm | Comp. |
|---|---|---|---|---|
| 2010 | CAKA / CGXC net | 333 @ 5500 | 325 lb-ft @ 2900 | 10.3:1 |
| 2011 | CAKA / CGXC net | 333 @ 5500 | 325 lb-ft @ 2900 | 10.3:1 |
| 2012 | CAKA / CGXC net | 333 @ 5500 | 325 lb-ft @ 2900 | 10.3:1 |
| 2013 | CAKA / CGXC net | 333 @ 5500 | 325 lb-ft @ 2900 | 10.3:1 |
| 2014 | CAKA / CGXC net | 333 @ 5500 | 325 lb-ft @ 2900 | 10.3:1 |
| 2016 | CAKA / CGXC net | 333 @ 5500 | 325 lb-ft @ 2900 | 10.3:1 |
Factory specification sheet.
| Bore/stroke character | 0.949 — undersquare — stroke exceeds bore, which favours low-end torque |
|---|---|
| Mean piston speed at 6,000 RPM | 3,504 ft/min — in the range typical of performance street engines |
| Displacement per cylinder | 30.5 ci |
| Static compression | 10.3:1 — in the range that usually runs on pump premium |
Each link opens the calculator with this engine's specs already filled in.
These records share identical bore, stroke, displacement and compression. They differ by model year and factory power rating.
| Year | Advertised HP | Code |
|---|---|---|
| 2010 | 333 hp | CAKA / CGXC |
| 2011 | 333 hp | CAKA / CGXC |
| 2012 | 333 hp | CAKA / CGXC |
| 2013 | 333 hp | CAKA / CGXC |
| 2014 | 333 hp | CAKA / CGXC |
| 2015 | — | CAKA / CGXC |
| 2016 | 333 hp | CAKA / CGXC |
1 factory vehicle, 2010–2016. Each year opens that model's engine table.