Some of the time when using about 1/3 throttle I get a rattling/tapping noise. Sounds like it could be the valves or something external - can't tell while I'm on it.
6500 miles on my 2007 S 500ie, if that helps. Never had anything done to it, except 1000km service, recalls, a few oil changes, and a battery.
Accelerates and idles just fine - the noise seems to be in the lower rpm range, but somewhat above idle - no tachometer on this model. Oil is full and fine - changing oil quieted it down last time it did this - if I remember correctly.
Temp is good and no real gas smell in oil. I've been using some 93 and some 87 gas, not really sure how that affects it, mostly Sam's Club lately. Gets 62-64 mpg, real uniformly and nothing is leaking.
Any ideas appreciated.