Overview The Audi Q7 4.2L V8 with the BAR engine is a full-size luxury SUV that exemplifies Audi’s engineering excellence, combining performance, comfort, and technology. Introduced as part of the first-generation Q7 lineup (Type 4L), this variant is distinguished by its powerful 4.2-liter naturally aspirated V8 engine, internally known as the BAR engine code. Designed for those who seek a …