Audi A4 40 TFSI長期測試 T.H.Yiu 7 years ago 重點sell慳油的A4 40 TFSI原來真的很慳?選這部車又有甚麼要注意呢?IG: https://www.instagram.com/topgearhk FB: https://www.facebook.com/topgearhk YT: https://www.youtube.com/user/topgearhongkong FB Group: https://www.facebook.com/groups/hkdriversclub