See other engines in this family
Audi BUB / CBRA specs: 3.2L (195 ci) 6-cylinder, 84 x 95.9 mm (3.3071 x 3.7756 in) bore and stroke, 11.3:1 compression. Rated 250 hp, 2008–2009.
The Audi BUB / CBRA is undersquare — the 3.7756" stroke exceeds the 3.3071" bore by 12.4% — a layout that trades peak RPM for leverage and torque low in the range. The 3.7756" stroke puts mean piston speed at 4,000 ft/min around 6,350 RPM, which is where a production bottom end is generally considered at its limit. Each of the 6 cylinders displaces 32.5 ci (533 cc).
11.3:1 is high enough that pump premium or better is normally required.
It is one of 3 engines in the Audi 195ci family, all of them 195 ci — the differences between them are in compression, heads and rating, not displacement. 2 factory variants share these dimensions, rated at 250 hp across 2008–2009.
| Displacement | 195 ci / 3.2 L |
|---|---|
| Bore | 3.3071" |
| Stroke | 3.7756" |
| Cylinders | 6 |
| Compression ratio | 11.3:1 |
| Bore/stroke ratio | 0.876 |
| Fuel type | gas |
|---|---|
| Advertised HP | 250 hp |
| Years | 2008–2009 |
| Year | Version | HP @ rpm | Torque @ rpm | Comp. |
|---|---|---|---|---|
| 2008 | BUB / CBRA net | 250 @ 6300 | 236 lb-ft @ 2800 | 11.3:1 |
| 2009 | BUB / CBRA net | 250 @ 6300 | 236 lb-ft @ 2800 | 11.3:1 |
Factory specification sheet.
| Bore/stroke character | 0.876 — undersquare — stroke exceeds bore, which favours low-end torque |
|---|---|
| Mean piston speed at 6,000 RPM | 3,776 ft/min — in the range typical of performance street engines |
| Displacement per cylinder | 32.5 ci |
| Static compression | 11.3:1 — high enough that pump premium or better is normally required |
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 |
|---|---|---|
| 2008 | 250 hp | BUB / CBRA |
| 2009 | 250 hp | BUB / CBRA |
2 factory vehicles, 2008–2009. Each year opens that model's engine table.