The 2013 Audi A3 runs on premium unleaded (required).
The 2013 Audi S5 runs on premium unleaded (required).
The 2013 Audi A5 runs on premium unleaded (required).
The 2013 Audi S6 runs on premium unleaded (required).
The 2013 Audi Allroad runs on premium unleaded (recommended).
The 2013 Audi A6 runs on premium unleaded (required).
The 2013 Audi S7 runs on premium unleaded (required).
The 2013 Audi S4 runs on premium unleaded (required).
The 2013 Audi A8 runs on premium unleaded (required).
The 2013 Audi A7 runs on premium unleaded (required).
The 2013 Audi Q7 runs on premium unleaded (required).
The 2013 Audi Q5 runs on premium unleaded (required).