What does the number 45 on the rear of an Audi car mean?

[DiDante]

Audi's rear numbers 35/40/45 indicate the horsepower of the engine. Generally, 35 on the rear of an Audi represents a 1.4T engine, 40 represents a low-power 2.0T engine, 45 represents a high-power 2.0T engine, and 55 represents a 3.0T engine. These numbers represent the G-value, reflecting the car's acceleration. The higher the value, the greater the horsepower and the better the performance. Audi, a German luxury car brand, is symbolized by four interlocking rings. It is now a subsidiary of Volkswagen Group, headquartered in Ingolstadt, Germany, and has branches in many countries, including China. Audi is a renowned car developer and manufacturer, symbolized by four interlocking rings. Currently a subsidiary of Volkswagen Group, headquartered in Ingolstadt, Germany, its main models include A1, A3, A4, A5, A6, A7, A8, Q1, Q2, Q3, Q5, Q7, Q8, TT, R8, and the S and RS performance series.