Third time back to dealership in 4 months for fuel delivery related problem!! Fuel injector replaced in November. Complaint of vehicle stuttering as fuel level reached 1/4 or 1/8th tank. Unable to properly diagnose and concluded it was a fuel level sensor (replaced). They said vehicle was out of gas as level showed 1/8th tank even though when I had the problems I drove another 100 km further beyond the 1/8th tank. Now, vehicle is stalling upon starting as well as when first put into gear. No engine light came on for any of these problems except for injector problem after about 1 week of intermittent problems. Mechanics now say there is a fuel pump problem and that all three of these problems are unrelated!! Unbelievable if this is the case (3 issues in 4 months). Very frustrated and service dep't has not shown the concern that I would excpect for a luxury vehicle!!