Compact executive car that is the best Audi’s selling vehicle of all time. Audi A4 was introduced In 1994. This model is Audi 80 successor and has 5 different generations. It has longitudinal mounted engine and is available as a front wheel drive or all-wheel drive (Quattro) version. This model is assembled in many different countries including Ukraine and Indonesia. These cars were available with inline 4, V6 or V8 engines.