Yes, I have done only once in 2015. Very bad experience with my wife's GP5. Sump protection cover (plastic item) was not fixed properly and they did not accept my complain, made on following day once it was noticed. Then they have not replaced a/c filter after cleaning. But in the booklet they mentioned ac filter was cleaned.I noticed this matter when vehicle was taken to next service in service station situated at Dematagoda area next to Cargills.