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Audi EA888 specs: 2.0L (121.9 ci) 4-cylinder, 82.5 x 92.8 mm (3.2480 x 3.6535 in) bore and stroke, 11.65:1 compression. Rated 252-265 hp. DOHC.
The Audi EA888 is undersquare — the 3.6535" stroke exceeds the 3.248" bore by 11.1% — a layout that trades peak RPM for leverage and torque low in the range. The 3.6535" stroke puts mean piston speed at 4,000 ft/min around 6,550 RPM, which is where a production bottom end is generally considered at its limit. Each of the 4 cylinders displaces 30.5 ci (499 cc).
11.65:1 on aluminum heads is high for a production gasoline engine; running a ratio like that on pump fuel depends on chamber design and fuel delivery rather than the number alone.
It is one of 2 engines in the EA888 family, all of them 121.9 ci — the differences between them are in compression, heads and rating, not displacement. 2 factory variants share these dimensions, rated from 252 to 265 hp. Factory fitments include the Audi A4 (B9), Audi A5 (F5), Audi Q5 (FY) and 6 others.
| Displacement | 121.9 ci / 2 L |
|---|---|
| Bore | 3.248" |
| Stroke | 3.6535" |
| Cylinders | 4 |
| Compression ratio | 11.65:1 |
| Bore/stroke ratio | 0.889 |
| Block material | cast iron |
|---|---|
| Head material | aluminum |
| Valvetrain | DOHC |
| Fuel type | gas |
| Advertised HP | 252–265 hp |
| Bore/stroke character | 0.889 — undersquare — stroke exceeds bore, which favours low-end torque |
|---|---|
| Mean piston speed at 6,000 RPM | 3,654 ft/min — in the range typical of performance street engines |
| Displacement per cylinder | 30.5 ci |
| Static compression | 11.65:1 — 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 |
|---|---|---|
| — | 252 hp | CVKB, DEMA, DMSA, CVKB, DEMA, DKNA, CVKB, CZPA, DEMA, CVKB, CVKC, DEMA, DEMB, DKNA, CVKB, CVKC, CVKD, CZPB, CZPC, DEMA, DEMB, DEMC, CVKB, CYFB, CZPB, DEMA, DBPA, CVKB, DEMA, DBPA, DEMA, DKNA, CVKB, CZPB, DEMA, CVKB, CYRB, CZPA, CVKB, CYFB, CZPA, DEMA, CVKB, CVKC, CZPA, CZPB, CZPC, DEMA, DEMB, DEMC |
| — | 265 hp | DNPA, DMSA, DNNA, DMSA, DNPA, DMSA, DMSA, DNNA, DNFE, DNFB, DNFC, DNNA, DNPB, DMSA, DNPA, DNFB, DMSA |