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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, 9.6:1 compression. Rated 200-220 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).
9.6:1 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 2 engines in the EA888 family, all of them 121.9 ci — the differences between them are in compression, heads and rating, not displacement. 3 factory variants share these dimensions, rated from 200 to 220 hp. Factory fitments include the Audi A4 (B8), Audi A5 (8T), Audi Q5 (8R) and 18 others.
| Displacement | 121.9 ci / 2 L |
|---|---|
| Bore | 3.248" |
| Stroke | 3.6535" |
| Cylinders | 4 |
| Compression ratio | 9.6:1 |
| Bore/stroke ratio | 0.889 |
| Block material | cast iron |
|---|---|
| Head material | aluminum |
| Valvetrain | DOHC |
| Fuel type | gas |
| Advertised HP | 200–220 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 | 9.6:1 — 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 |
|---|---|---|
| — | 200 hp | CAEB, CCTA, CBFA, CAEB, CAEB, CCTA, CBFA, CESA, CAEB, CCTA, CBFA, CESA, CETA |
| — | 211 hp | CDNC, CESA, CETA, CDNC, CDNB, CCZA, CCZB, CDNC, CDNB, CCZA, CCZB, CCZC, CDNC, CDNB, CFKA, CCZA, CCZB, CDNC, CDNB, CESA, CETA, CDNC, CDNB, CCZA, CCZB, CCZC, CCZD |
| — | 220 hp | CNCD, CYMC, CXBB, CYFB, CYMC, CNCD, CYMC, CYRB, CNCD, CYMC, CYRB, CZPB, CXDA, CNCD, CYMC, CYRB, CZPB, CZPC, CNCD, CPMA, CPMB, CYMC, CYRB, CYRC, CZRA, CULA, CULB, CULC, CNCD, CPMA, CPMB, CYMC, CYRB, CNCD, CYMC, CXBB, CZPB, CNCD, CYMC, CYRB, CZPB, CVKB, CNCD, CYMC, CYRB, CZPB, CNCD, CPMA, CPMB, CYMC, CYRB, CYRC |