Compatible with Volkswagen VW Group petrol direct injection engines (FSI/TSI/TFSI), including VW Golf, Jetta, Passat, Tiguan (1.4/1.8/2.0 TSI), Audi A3, A4, A6, Q5 (1.8/2.0 TFSI, 2.7/3.0 V6), Skoda Octavia, Superb (1.4/1.8/2.0 TSI, 3.6 V6), Seat Leon, Exeo (1.8/2.0 TSI), and Audi S4, RS4, S5, Q7 (4.2 V8 FSI), Etc.