Audi A4 1.8 petrol engine codes — ADR, APT, and possibly H/B/S, which likely relate to transmission or variant codes (we’ll clarify below). These engines are part of the EA827/EA113 family, popular in the mid-to-late ’90s to early 2000s Audi A4 (B5 generation).
🔧 Audi A4 1.8 Petrol Engines (ADR / APT)
🔹 ADR – 1.8 20V NA
| Feature | Spec |
|---|---|
| Engine Code | ADR |
| Displacement | 1.8L (1781cc) |
| Valvetrain | DOHC 20-valve |
| Power Output | 92 kW (125 hp) |
| Aspiration | Naturally Aspirated |
| Fuel System | Multi-Point Injection (MPI) |
| Vehicles | Audi A4 B5 (1995–1999), some early A6 |
| Timing | Belt-driven |
| Notes | Early longitudinal 1.8 20V engine, smooth but underpowered by modern standards |
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