Carfax NO accidents! 4.2l v8 dohc 40v. A true love for the craft of automobile making really shows. Kicks noise to the curb. How exclusive is this! Just in, this fantastic 2007 Audi Q7 comes with a 4.2L V8 DOHC 40V engine and 6-Speed Automatic with Tiptronic. J.d. Power has named the 2007 Q7 as the highest ranked in Overall Performance and Design in its class. This Q7 has forever ahead of it with plenty of space still left on the odometer.