The AUM and AUQ are engine code designations for specific variants of the Volkswagen Group’s 1.8‑litre, 20‑valve turbocharged petrol engine (often referenced in Audi and VW models from the late 1990s and early 2000s). While sometimes listed in parts catalogues for Audi A4 applications, these codes are more commonly associated with 1.8 T engines in Audi A3, TT, VW Golf, Jetta, and related cars, with differences mainly in factory tuning and software calibration for power output and emissions.
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AUM typically refers to an earlier 1.8 T unit with around 110 kW (~150 hp) output, known for its reliable balance of performance and drivability.
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AUQ denotes a slightly higher‑tuned version of the same basic engine, often rated around 132 kW (~180 hp) with about 235 Nm of torque, giving stronger acceleration while still maintaining everyday usability.
These engines are part of the Volkswagen Group’s EA113 family and are built with a turbocharger, 20 valves and a DOHC layout. They’re known for tunability and solid performance in compact and midsize platforms, and are found in both manual and automatic‑equipped vehicles.
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