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Audi DECA / DLZA specs: 3.0L (183 ci) 6-cylinder, 84.5 x 89 mm (3.3268 x 3.5039 in) bore and stroke, 11.2:1 compression. Built 2018–2025.
The Audi DECA / DLZA 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).
11.2:1 on aluminum heads is high enough that pump premium or better is normally required.
It is one of 5 engines in the EA837 family, sitting between the 182.9 ci and 195.1 ci members. 8 factory variants share these dimensions across 2018–2025.
| Displacement | 183 ci / 3 L |
|---|---|
| Bore | 3.3268" |
| Stroke | 3.5039" |
| Cylinders | 6 |
| Configuration | V6 |
| Compression ratio | 11.2:1 |
| Bore/stroke ratio | 0.949 |
| Block material | aluminum |
|---|---|
| Head material | aluminum |
| Valvetrain | DOHC |
| Fuel type | gas |
| Years | 2018–2025 |
| 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 | 11.2:1 — 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 |
|---|---|---|
| 2018 | — | DECA / DLZA |
| 2019 | — | DECA / DLZA |
| 2020 | — | DECA / DLZA |
| 2021 | — | DECA / DLZA |
| 2022 | — | DECA / DLZA |
| 2023 | — | DECA / DLZA |
| 2024 | — | DECA / DLZA |
| 2025 | — | DECA / DLZA |
1 factory vehicle, 2018–2025. Each year opens that model's engine table.