Hi, tis my first on this forum. I think I've got the same problem. Stats say that S-type 3.0 AT should go 0-100km/h in 7.9s, the best mine can do is 8.9. Tryed dozen times with all the bossiple gearbox settings. Wheelspin is out of the question (R17 245/45). And I've got this strange noise from the engine, not loud enough to hear it inside the car, but clear ouside. Engine sounds as if it was a diesel. I am not a mechanic, but suspect a problem with chain tensioner. Tomorrow I plan to go for computer diagnostics and feel a bit silly for not knowing is there any problem with my car, or it gives all the power it can possibly give. And if computer won't show any failures, what could be next step in search of lost power? Bought my car a moth ago, its 1999 S-type, dashboard shows 110000km mileage, but i think it can be way over 200000km (dealers do that in my country).