What grade of gasoline should an Audi A4 use?

[VanessaFitz]

Audi A4 should use 95-octane gasoline. The gasoline octane rating is the ratio of the actual gasoline's anti-knock performance to that of standard gasoline. The higher the octane number, the stronger the anti-knock performance. However, a higher octane number is not necessarily better; the appropriate gasoline grade should be selected based on the engine's compression ratio. The Audi A4 is a model under FAW-Volkswagen Audi, with body dimensions of 4761mm in length, 1826mm in width, and 1439mm in height, and a wheelbase of 2869mm. The Audi A4 comes standard with Audi's patented quattro all-wheel-drive system, which provides double the traction. The design of the car's door handles emphasizes ergonomic effects and complete functionality, making it easy to open the doors.