What do the letters on Audi's model names mean?

I've noticed that Audi cars have a combination of letters and numbers in their model names. What does this combination signify and how can I understand it properly?

The letters in Audi's model names represent different features present in the car. The first letter always stands for the car's series or platform, such as the A5 being part of the A line. The second letter represents the body style, with S standing for sports, RS for high-performance, and Q for SUV. The third letter represents the engine, with T for petrol and D for diesel. The numbers indicate the car's size and power within the series.

I always remember the rule 'The more numbers, the bigger the car' when deciphering Audi's model names. The first number represents the series, with the higher numbers standing for bigger cars. The second and third numbers represent the car's engine power in kilowatts, with higher numbers indicating a more powerful engine.

I found the easiest way to understand Audi's model names is to visit their website's model overview page, which explains the naming convention in detail with examples. You can also hover over the model names on the page to see a brief explanation of what each letter and number stands for.