Turning lights in mirrors, different auxiliary brake light, slightly different front side (lower grill and head lights (more narrow also), different air intake holes, side list colored same as car color, different tail lights, new engine choices (270CDI and 320 CDI) with flexible controlled turbo chargers and water cooled alernators, 6 gear manual transmission available. New regular features: ESP, electric controlled seats, window airbags, driving computer, 8 loudspeakers, cruise control also in manual transmissions. Steering wheel (like you said), different instrument cluster (+command available), new upholstery choices, damped glove box opening, backseat headrest lowering with button. E200 engine came with turbo charger, E240 engine expanded to 2,6 liter size.
This happened at least in europe models
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