As far as some of the current model numbers being wrong (ML350 with a 3.7l, etc.) I have heard that shortly all models will have direct injection engines with slightly smaller displacement delivering more power more efficiently than the current engines. The are using the future engine size in the numbers now cause who would want to buy a 350 when last years model was a 370? Again - pure marketing.

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Jason Priest
1999 E430
1995 E420 - retired
1986 420SEL - retired