Neither the sports or inspiration package seem to do anything to improve the ML’s performance, but only the presentation. The AMG seats probably are more supportive, but I have no complaints about the standard seats. IMO adding useful features would be a better spend than either of these packages, or just get a ML 500 as it would probably have all of the features you’d spend for on the 320/350

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...Tracy

'00 ML320 "Casper"
'92 400E "Stella"